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Analysis of ancient DNA from in vitro grown tissues of 1600-year-old seeds revealed the species as Anagyris foetida
(Cambridge University, 2012-12) Özgen, Murat; Özdilek, Aslı; Birsin, Melahat A.; Önde, Sertaç; Kaya, Zeki; Şahin, Derya; Açıkgöz, Esvet; Uludağ Üniversitesi/Fen-Edebiyat Fakültesi/Arkeoloji Bölümü.; Uludağ Üniversitesi/Ziraat Fakültesi/Tarla Bitkileri Bölümü.; 55343714100; 55480264700
Seven ancient seeds, about 1600 years old, were found during an archaeological excavation in Asar Island which is located in south-western Turkey. These seeds were subjected to germination, in vitro callus induction and molecular characterization experiments to test the viability and plant origin of the seeds. Six of the seven seeds had viable seed components (such as cotyledons) and produced callus tissue in Murashige and Skoog medium supplemented with 2mgl(-1) 6-benzylamino purine (BAP), 0.2 mgl(-1) 1-naphthaleneacetic acid (NAA), 20 gl(-1) sucrose, 2mgl(-1) glycine and 7 gl(-1) agar, but the calli from these seeds failed to yield adventitious shoots. DNA samples from callus tissues produced by ancient seeds in vitro were of good quality. The internal transcribed spacer (ITS) region in nuclear DNA (nDNA) of ancient seeds was amplified successfully. The sequences from amplified ITS DNA products of six ancient seeds indicated that their ITS sequences matched those of Anagyris foetida after subjecting them to BLAST searches in international sequence databases (NCBI). A. foetida is a relict species endemic to the Mediterranean region and used as a herbal medicine. We believe that seed characteristics such as the very hard, extremely smooth and shiny testa, toxic anagyrine alkaloid content and their storage in a pot further improved the longevity of these ancient seeds.
Biomass and seed yield stability of pea genotypes
(Wfl Publication, 2009-01) Tamkoç, Ahmet; Üstün, Ali; Altınok, Suzan; Açıkgöz, Esvet; Uludağ Üniversitesi/Ziraat Fakültesi.; 6602817346
Seed and biomass yield and yield components in eight-leafed and semi-leafless pea (Pisum sativum L.) genotypes were evaluated under dry and irrigated conditions at two locations (Ankara and Konya) in 2003 and 2004. The main concern was the adaptability and phenotypic stability of investigated genotypes. Experiments were carried out in a split plot design with 3 replications. Water status and genotypes significantly affected most yield components, biomass and seed yield in individual years and over years at both locations. Differences among conventionally leafed and semi-leafless lines for biomass and seed yield were not consistent between years and water status treatments. However, overall means of biomass yield and stability analysis showed that two semi-leafless genotypes, P57B and P57K, were superior to leafed genotypes in this study. The highest seed yield was obtained from semi-leafless genotypes P57B and P57K and the leafed genotype P 104. Stability analysis with data of both locations suggested that P57B was adapted to irrigated conditions, P57K and P104 were adapted to dry conditions.
Common vetch (Vicia sativa L.) germplasm: Correlations of crude protein and mineral content to seed traits
(Springer, 2011-09) Uzun, Ayşen; Güçer, Şeref; Açıkgöz, Esvet; Uludağ Üniversitesi/Ziraat Fakültesi/Tarla Bitkileri Anabilim Dalı.; Uludağ Üniversitesi/Fen-Edebiyat Fakültesi/Kimya Anabilim Dalı.; 0000-0003-0610-2019; AAG-7431-2021; 13004441000; 36849130600; 6602817346
In order to increase knowledge of seed nutritive value and to demonstrate its relationship in common vetch (Vicia sativa L.) germplasm, 388 common vetch accessions were grown under field conditions in 2008-2009 growing season in Bursa province of Turkey. Seeds were analyzed for seed minerals (Ca, Cu, Mg, Mn, P, S, Zn and K) and crude protein (CP) content. The accessions were grouped according to testa and cotyledon color and seed size, and the results were evaluated by analysis of variance to determine relationships between minerals and CP content, testa and cotyledon colors, and seed weight. In general, there was no significant difference between testa colors or cotyledon colors in minerals and CP content. However, seed weight was closely associated with minerals and CP contents in this study. Analysis of variance and correlation analysis showed that seed weight was closely associated with some minerals and CP content. The small seeds had significantly higher Ca, Cu, Mg, Mn, S, Zn and CP contents than medium and large seeds.
Control of a new turf pest, Dorcadion pseudopreissi (Coleoptera: Cerambycidae), with the entomopathogenic nematode Heterorhabditis bacteriophora
(Springer Heidelberg, 2011-09) Susurluk, İsmail Alper; Kumral, Nabi Alper; Bilgili, Uǧur; Açıkgöz, Esvet; Uludağ Üniversitesi/Ziraat Fakültesi/Bitki Koruma Bölümü.; Uludağ Üniversitesi/Ziraat Fakültesi/Tarla Bitkileri Bölümü.; 0000-0001-9442-483X; A-1388-2019; AAH-1539-2021; AAG-7131-2021; 11439641200; 15846048400; 6506803244; 6602817346
The use of biological control in turf has increased to avoid possible negative effects on humans. Entomopathogenic nematodes (EPNs) belonging to the families Steinernematidae and Heterorhabditidae have control potential against many economically important insect pests. In the present study, the efficacy of Heterorhabditis bacteriophora against a new pest on turf, Dorcadion pseudopreissi, was examined in the field. Cages (1 x 1 x 1 m) with female and male D. pseudopreissi were placed on two kinds of turf: Lolium perenne and Festuca arundinacea. After beetles had deposited eggs into the moist soil surface, the cages were removed and H. bacteriophora was applied at 0.5 million infective juveniles/m(2) to half the plots. Application of H. bacteriophora caused a statistically significant reduction in numbers of beetle larvae in L. perenne plots and a non-significant reduction in F. arundinacea plots. The area damaged by D. pseudopreissi was significantly reduced by nematode application in both turf species. The number of nematodes declined after application, but small numbers could still be detected after 6 months.
Dry matter accumulation and forage quality characteristics of different soybean genotypes
(TÜBİTAK, 2012-07-15) Wietgrefe, Gary; Sürmen, Mustafa; Çeçen, Semiha; Yavuz, Tamer; Erdurmuş, Cengiz; Göksöy, Abdurrahim Tanju; Açıkgöz, Esvet; Sıncık, Mehmet; Uludağ Üniversitesi/Ziraat Fakültesi/Tarla Bitkileri Bölümü.; 6602817346; 23989507900
Three different soybean [Glycine max (L.) Merr.] cultivars (A-3127, Derry, and Yemsoy) were evaluated for dry matter (DM) yield, plant components, and crop growth rate (CGR) at different row spacings and harvesting stages in 3 locations with Mediterranean-type climate in a split-split plot design with 3 replications in 2009 and 2010. In addition, crude protein (CP), crude protein yield (CPY), acid detergent fiber (ADF), neutral detergent fiber (NDF), total digestible nutrients (TDN), and relative feed value (RFV) of harvested forage soybeans were determined at the Bursa (Turkey) location. Increased row spacings significantly reduced DM yield at all locations. Combined over other main effects, the 25-cm row spacing produced 35% more DM yield than the 75-cm row spacing. Row spacings greatly affected DM yield at the R5 and particularly the R7 stage, but this effect was minimal at the RI stage. The forage-type cultivar Derry produced significantly higher DM yield in all locations, particularly at the R5 and R7 stages. The constituent components of DM were similar at different row spacings of soybean cultivars. In general, the CGR decreased from 25-cm row spacing to 75-cm row spacing in all locations, and the CGR of the cultivars varied significantly according to harvest period, row spacing, and location. Derry had a significantly higher CGR than the other cultivars in the Antalya and Bursa locations. Quality characteristics of soybean forage were not 'significantly affected by row spacing and showed little effect by cultivar. Harvest stage significantly affected CP, ADF, NDF, TDN, and RFV concentrations of soybean forage. It was concluded that in Mediterranean environments forage-type soybeans (i.e. Derry) can be seeded in narrow rows (25 cm) at high plant population (100 kg ha(-1)) and offer the most DM yield when harvested at later R stages (e.g., R7) rather than at the early reproductive stage.
Effect of green manuring on the yield of sweet corn
(Springer France, 2005) Turgut, İlhan; Bilgili, Uğur; Duman, Ahmet; Açıkgöz, Esvet; Uludağ Üniversitesi/Ziraat Fakültesi/Tarla Bitkileri Bölümü.; AAH-1539-2021; AAH-2761-2021; 8353613700; 6506803244; 35877086200; 6602817346
Experiments were conducted on a clay soil to assess the effects of green manuring of three annual legumes and nitrogen fertilization on sweet corn (Zea mays var. saccharata Sturt.), during three growing seasons (2001 - 2003). The green manuring legumes were field pea (Pisum sativum L.), common vetch (Vicia sativa L.) and faba bean (Vicia faba L.) N fertilization ranged from 0 to 360 kg ha(-1). On a three-year average, field pea (3 065 kg ha(-1)) and common vetch (2 647 kg ha(-1)) consistently had higher aboveground dry matter yields than faba bean (1307 kg ha(-1)). Field pea and common vetch had N contents of 68.7 and 54.0 kg ha(-1), respectively, in aboveground dry matter in the spring. The average N content of faba bean was only 30.0 kg ha(-1). Green manuring treatments and N fertilization had different effects on yield components of sweet corn. Average ear yields of corn were significantly greater in plots receiving green manuring (15 127 kg ha(-1)) than those without green manuring (13 826 kg ha(-1)). The ear yields following green manuring legumes were 33-39% higher compared with fallow under unfertilized conditions. Ear yield of corn generally increased with an increasing rate of N fertilizer. Although the combined use of green manuring and 240 and 360 kg ha(-1) N fertilization produced high ear yields, there were no statistically significant increases beyond 120 kg ha(-1) N.
Effect of low temperatures on the germination of different field pea genotypes
(ISTA-Int Seed Testing Assoc, 2004-01-01) Sincik, Mehmet; Bilgili, Uğur; Uzun, Ayşen; Açıkgöz, Esvet; Uludağ Üniversitesi/Ziraat Fakültesi/Tarla Bitkileri Bölümü.; AAH-1811-2021; AAH-1539-2021; AAG-7431-2021; 23989507900; 6506803244; 13004441000; 6602817346
Germination, emergence in sand and seedling development of ten field pea (Pisum sativum L.) accessions differing in leaf type, flower and seed color, cold hardiness and growing habit were assessed at three low temperatures of 2degreesC, 5degreesC and 10degreesC and a control temperature of 20degreesC. Seeds germinated and emerged in temperatures ranging from 5 to 20degreesC. Germination and emergence were highest for all accessions at 10degreesC followed by 20degreesC. Germination and emergence occurred earliest at 20degreesC and were delayed as temperature decreased. The GT(50) and ET50 values (days for 50% germination or emergence) were shortest at 20degreesC and longest at 5degreesC. Cold temperatures, particularly 5degreesC, caused a clear reduction in both top growth and root development and yield and individual seedling weight. Seeds failed to germinate or emerge at 2degreesC when left for 216 days: however seeds of some accessions emerged successfully when transferred to 20degreesC after this period. Germination and emergence were not associated with seed or flower color, cold hardiness and leaf type of the pea accessions at either 20degreesC and or l0degreesC. However, red flowered and cold hardy accessions showed better germination and emergence at 5degreesC and their seeds also remained viable for approximately 8 months at 2degreesC. Cold hardy, purple flowered and small seeded accessions produced smaller seedlings and grew slowly. Seed weight was positively and significantly correlated with top and root development of seedlings, total fresh yield and daily growth rate at all temperatures.
Effect of plant growth-promoting Bacillus sp on color and clipping yield of three turfgrass species
(Taylor & Francis, 2015-02-27) Şahin, Fikrettin; Guillard, Karl; Açıkgöz, Esvet; Bilgili, Uğur; Uludağ Üniversitesi/Ziraat Fakültesi/Tarla Bitkileri Bölümü.; AAH-1539-2021; 6602817346; 6506803244
A two-year irrigated field study was conducted to determine the effects of plant growth-promoting rhizobacteria (PGPR; Bacillus subtilis OSU-142 and Bacillus megaterium M3) as biofertilizer, and in combination with a chemical nitrogen (N) fertilizer, on turf color and clipping yield, and interaction of biofertilizer and chemical N fertilizers in perennial ryegrass (Lolium perenne L.), tall fescue (Festuca arundinacea L. Schreb.), and Kentucky bluegrass (Poa pratensis L.). The three turf species were tested separately in split-plot design experiments with three replications. Three fertilizer sources (ammonium nitrate only, ammonium nitrate + B. megaterium M3, and ammonium nitrate + B. subtilis OSU-142) were the main plots. N applications with monthly applications of 0.0, 2.5, 5.0, and 7.5g N/m(2) were the subplots. Color ratings and clipping yields increased with increasing chemical N fertilizers in all species. Both Bacillus sp. significantly increased color ratings and clipping yields in perennial ryegrass and tall fescue. However, there were no significant differences among the three fertilizer sources in color and clipping yield of Kentucky bluegrass. The experiments showed that there is a small but significant benefit from applying biofertilizers for turf color, and that N fertilization may be reduced in some turf species when biofertilization are made for this purpose.
Effect of seeding rate and nitrogen fertilization on proso millet under dryland and irrigated conditions
(Taylor & Francis, 2006-12) Wietgrefe, G. W.; Tutgut, İlhan; Duman, Alptekin; Açıkgöz, Esvet; Uludağ Üniversitesi/Ziraat Fakültesi/Tarla Bitkileri Bölümü.; AAH-2761-2021; 8353613700; 35877086200; 6602817346
Proso millet (Panicum miliaceum L.) is a short-season grain crop in semi-arid regions of North and South America and Asia. The objective of this study was to evaluate seeding rates and nitrogen (N) fertilization on proso millet seed yield, crude protein levels, and biomass yield under irrigated and dryland conditions in a Mediterranean-type transition climate near Bursa, Turkey. Seeds per panicle, panicle length, seed weight per panicle, fertile tillers, protein yield, and plant height were also evaluated. Results indicated seeding rate did not affect seed yield significantly. Seed and protein yield increased with increasing N doses although biomass did not significantly increase. Panicle length, seeds per panicle, and seed weight per panicle decreased with increasing seeding rates. This study proved proso millet can be grown for grain and forage as a short-season dryland and irrigated rotational crop in a Mediterranean-type climate.
Effects of different seeding rates on forage yield and quality components in pea
(Ege Üniversitesi Ziraat Fakültesi, 2017) Uzun, Ayşen; Aşık, Barış Bülent; Açıkgöz, Esvet; Uludağ Üniversitesi/Ziraat Fakültesi/Tarla Bitkileri Bölümü.; Uludağ Üniversitesi/Ziraat Fakültesi/Toprak Bilimi ve Bitki Besleme Bölümü.; AAG-7431-2021; 13004441000; 35217629600; 6602817346
The aim of this study was to investigate the effects of seeding rate on yield and quality components in forage pea cultivars. Four pea cultivars (Ulubatli, Kirazli, Golyazi and Urunlu) and five seeding rates (75, 100, 125, 150 and 175 viable seeds m(-2)) were used in this study. Field experiments were carried out from 2009 to 2011 during the winter growth period at Uludag University, Faculty of Agriculture, Agricultural Research and Application Center in Bursa province, Turkey. The experimental design was a randomized complete block desing with three replications. Dry matter yield, crude protein ratio and yield, acid detergent fiber, neutral detergent fiber, total digestible nutrients and relative feed values were determined. Significant differences were found among the pea cultivars and seeding rates in all measured characteristics in both years. The highest dry matter yield was obtained from the Kirazli cultivar at 125 seed m(-2). The digestibility of the Golyazi cultivar was higher than the other cultivars. On the other hand, the digestibility of the forage decreased as the seeding rate increased.
Effects of nitrogen application timing on growth and quality of a turfgrass mixture
(Taylor & Francis, 2001) Oral, Necdet; Açıkgöz, Esvet; Uludağ Üniversitesi/Ziraat Fakültesi/Bahçe Bitkileri Bölümü.; 6701906682; 6602817346
A 3-year field study was conducted to determine the influence of nitrogen (N) application timing on the growth and quality of a turfgrass mixture consisting of perennial ryegrass (Lolium perenne L.), Kentucky bluegrass (Poa pratensis L.), creeping red fescue (Festuca rubra var, rubra L.), and chewings fescue (Festuca rubra var. commutata Gaud.) under irrigated conditions. Nitrogen was applied annually at the rate of 30 g m(-2) year(-1), with six application regimes: control (no N), single spring (30 g m(-2)), single fall (30 g m(-2)), spring + fall (15 + 15 g m(-2)), spring + summer + fall (10 + 10 + 10 g m(-2)), and monthly from April through September (5 g m(-2)). Color, turf quality, clipping weights, and shoot density were correlated with fertilizer rates and application timing in this study. Fertilization monthly or every 2 months resulted in more uniform color and turf quality and less clipping weights than with comparable heavy spring and fall fertilizations. Heavy N applications in the fall did not cause winter injury and produced significantly darker color and more uniform appearance in early spring than other N applications. All N-fertilization regimes increased shoot density, but spring fertilization stimulated density the most. Nitrogen applied monthly or every 2 months was enough to enhance the color, turf quality, and shoot density of the turf during the growing season but did not greatly affect the growth rate.
Effects of slow-release fertilizers on turf quality in a turf mixture
(Ege Üniversitesi Ziraat Fakültesi, 2011) Bilgili, Uǧur; Açıkgöz, Esvet; Uludağ Üniversitesi/Ziraat Fakültesi/Tarla Bitkileri Bölümü.; AAH-1539-2021; 6506803244; 6602817346
A 2-year field study was conducted to determine the influence of the timing of application and different slow release nitrogen (N) sources with different nitrogen rates on the growth and quality of a turfgrass mixture. Three different timings were used for nitrogen application: annually, once every 3 months, and once every 6 months. Three nitrogen sources (ammonium nitrate and two slow-release fertilizers, Entec and Osmocote) were used in the trial. Annually applications were carried out at rates of 0 (control) g m(-2), 30 g m(-2), 60 g m(-2), 90 g m(-2). Results of this study showed that both slow-release fertilizers had significantly higher ratings of color and quality and significantly higher clipping yields compared with the control (ammonium nitrate) during the fall and winter seasons. During the other seasons, the slow-release fertilizers produced equal, slightly higher or slightly lower color and quality ratings and clipping yields, compared with the control. It should be noted that an acceptable color rating and turf quality were obtained in the fall and winter seasons with 60 and 90 g N m(-2) yr(-1) of slow release fertilizers.
Effects of wastewater sludge topdressing on color, quality, and clipping yield of a turfgrass mixture
(Amer Soc Horticultural Science, 2011-09) Bilgili, Uǧur; Şağban, Fatma Olcay Topaç; Sürer, İrfan; Çalışkan, Necla; Uzun, Pervin; Açıkgöz, Esvet; Uludağ Üniversitesi/Ziraat Fakültesi/Tarla Bitkileri Bölümü.; Uludağ Üniversitesi/Mühendislik Fakültesi/Çevre Mühendisliği Bölümü.; 0000-0002-6364-4087; AAH-1853-2021; AAH-1539-2021; 6506803244; 52464208200; 52464590800; 57213336818; 50263251200; 6602817346
The objectives of the present study were to determine the effects of the rate and timing of the application of sun-dried wastewater sludge from a food processing company's wastewater system on turfgrass growth and quality. The results were compared with those obtained with ammonium nitrate, and changes in the concentration of heavy metals and the presence of fecal coliform in turf soils after sun-dried wastewater sludge application were determined. The rate and the timing of sun-dried wastewater sludge and ammonium nitrate applications affected the turf color, quality, and clipping yield. Monthly fertilization resulted in a more uniform color and turf quality than infrequent spring and fall fertilization. Compared with the background values of base soils, heavy metals did not accumulate in sun-dried wastewater sludge-amended soils over the test period. Fecal coliform was not detected in sludge-amended soil samples, indicating that bacteria regrowth did not occur during the study period.
Effects of white clover inclusion on turf characteristics, nitrogen fixation, and nitrogen transfer from white clover to grass species in turf mixtures
(Taylor & Francis, 2007) Sincik, Mehmet; Açıkgöz, Esvet; Uludağ Üniversitesi/Ziraat Fakültesi/Tarımsal Yapılar ve Sulama Bölümü.; AAH-1811-2021; 23989507900; 6602817346
An irrigated field trial was conducted to test the effects of white clover in three turfgrass species (perennial ryegrass, Kentucky bluegrass, and creeping bentgrass) on color, clipping yield, and botanical composition and to estimate nitrogen (N)(2) fixation and N transfer from white clover to associated turfgrass species under different N-fertilization conditions in 1999-2002. Nitrogen fertilizers significantly increased color ratings in all observations. Grass-white clover mixtures had better color ratings than pure grass at all sampling dates and seasonal averages in unfertilized conditions. Fertilized pure grass plots yielded significantly more than control plots in all turfgrass species. Nitrogen fertilization did not affect clipping yield greatly in turfgrass-white clover mixtures. Nitrogen application significantly decreased white clover percentage in the harvested clippings in second and third year. Nitrogen fertilization increased tissue N concentration positively in all turfgrass species grown alone. In contrast, N fertilization did not greatly affect tissue N concentration of either turfgrass species or white clover in the mixtures. Nitrogen fixation of white clover was estimated as 24.6, 30.7, and 33.8 9 m(-2) year(-1) in perennial ryegrass, Kentucky bluegrass, and creeping bentgrass, respectively. The total estimated N-2 fixation gradually decreased with increasing N fertilization. Nitrogen transfer from white clover to the associated turfgrass varied from 4.2 to 13.7% of the total N that the white clover fixed annually.
Forage soybean production for seed in mediterranean environments
(Elsevier, 2009-02-28) Töngel, Özgür; Wietgrefe, Gary; Öz, Mehmet; Albayrak, Sebahattin; Açıkgöz, Esvet; Sıncık, Mehmet; Karasu, Abdullah; Bilgili, Uğur; Turan, Zeki Metin; Göksoy, Abdurrahim Tanju; Uludağ Üniversitesi/Ziraat Fakültesi/Tarla Bitkileri Bölümü.; Uludağ Üniversitesi/Mustafakemalpaşa Meslek Yüksek Okulu.; 0000-0002-0012-4412; AAG-9296-2021; AAH-1539-2021; AAH-1811-2021; AAH-1754-2021; 6602817346; 23989507900; 24174652100; 6506803244; 6505789772; 6603101276
Despite several experiments on row spacings and seeding rates of grain soybeans, limited information is available on the most suitable row spacing and seeding rate for tall and robust forage type soybeans grown for seed. The objectives of this study were to investigate seed yield, oil and protein content, and several morphological traits as affected by row spacing (20, 40, 60 and 80 cm) and seeding rate (330,000, 660,000, 990,000 and 1,320,000 seeds ha(-1)) in tall and robust forage type soybeans in three irrigated Mediterranean environments in Turkey in a randomized split plot design with three replications in 2004 and 2005. Row spacings had no significant effect on plant height but tall and profusely branched plants developed in wide row spacing and light seeding conditions. Seed yield responded positively and linearly to row spacing up to 60 cm and then decreased slightly in all locations. Seed yield was the highest at 990,000 seeds ha(-1) seeding rate in all three locations (3072.5 kg ha(-1) in Bursa LSD = 214.7 kg ha(-1), 3295.1 kg ha(-1) in Mustafakemalpasa LSD = 298.6 kg ha(-1) and 3311.3 kg ha(-1) in Samsun LSD = 321.1 kg ha(-1)). Averaged across years, locations, row spacings, and seeding rates the mean seed yield was an impressive 3013.4 kg ha(-1) compare with 3500.0 kg ha(-1) average seed yield of grain types. Crude protein and oil content of forage type soybean were not significantly affected by row spacings and seeding rates. It was concluded that forage type soybeans can be grown for multiple purposes at the 990,000 seeds ha(-1) seeding rate and 60 cm row spacings in Mediterranean environments.
Forage yield and lodging traits in peas (Pisum sativum L.) with different leaf types
(Ege Üniversitesi Ziraat Fakültesi Tarla Bitkileri Bölümü, 2010) Aydınoğlu, Bilal; Çakmakçı, Sadık; Geren, Hakan; Avcıoğlu, Rıza; Nizam, İlker; Tekeli, Ali Servet; Gül, İsmail; Anlarsal, Emin; Yücel, Celal; Avcı, Mustafa; Acar, Zeki; Ayan, İlknur; Üstün, Ali; Bilgili, Uğur; Uzun, Ayşen; Sincik, Mehmet; Yavuz, Mine; Açıkgöz, Esvet; Uludağ Üniversitesi/Ziraat Fakültesi/Tarla Bitkileri Bölümü.; AAH-1811-2021; AAH-1539-2021; AAG-7431-2021; 6506803244; 13004441000; 23989507900; 26532114800; 6602817346
Two semi-leafless and four leafed pea (Pisum sativum L.) genotypes were evaluated for plant height, lodging scores, and forage yield in eight diverse locations with typical Mediterranean or Mediterranean-type climate in the 2001-2002 and 2002-2003 growing seasons. The genotypes used in this study were forage type with indeterminate growing habit. Significant differences among pea genotypes were found for all traits over years and locations. All interactions which related to G x E interaction showed significance (P>0.01) for all traits. The forage yield of the pea genotypes averaged 26605 kg ha(-1) and the highest yield was obtained from the leafed genotype Urunlu. Its forage yield reached to 35970 kg ha(-1) yield level at Samsun location.
Genotype x nvironment interaction and stability analysis for dry matter and seed yield in field pea (Pisum sativum L.)
(Spanish Natl Inst Agricultural & Food Research & Technolo, 2009-03) Üstün, Ali; Gül, İsmail; Anlarsal, Emin; Tekeli, Ali Servet; Nizam, İlker; Avcıoğlu, Rıza; Geren, Hakan; Çakmakçı, Sadık; Aydınoğlu, Bilal; Yücel, Celal; Avcı, Mustafa; Acar, Zeki; Ayan, İlknur; Açıkgöz, Esvet; Uzun, Ayşen; Bilgili, Uğur; Sıncık, Mehmet; Yavuz, Mine; Uludağ Üniversitesi/Ziraat Fakültesi/Tarla Bitkileri Bölümü.; AAH-1811-2021; AAH-1539-2021; AAG-7431-2021; 6602817346; 13004441000; 6506803244; 23989507900; 26532114800
The objectives of this study were to evaluate dry matter (DM) yield and seed yield of six leafed and semi-leafless pea (Pisum sativum L.) genotypes, and to compare them for these traits. Evaluation of genotype x environment (G x E) interaction, stability and cluster analysis were also carried out at eight diverse locations with typical Mediterranean and Mediterranean-type climate during the 2001-2002 and 2002-2003 growing seasons. Significant differences were found among the pea genotypes for DM and seed yield on individual years and combined over years, and in all locations. All interactions which related to G x E interaction showed significance (P>0.001) for DM and seed yield. The highest yield (4789 kg ha(-1)) was obtained from the leafed genotype 'Urunlu'. However, stability analysis indicated that for DM yield, the leafed genotypes 'Golyazi' and 'Urunlu' should be grown in low yielding and high yielding environments, respectively. Cluster analysis, based on grouping locations, showed that P101 was the preferred variety in low yielding environments, and P98, in high yielding ones. It was suggested that the use of both stability and cluster analyses might give better results. Comparison of cluster and stability analyses showed that the stability analysis fails to recommend cultivars to different regions where yield potential showed significant differences. It seems, however, that cluster analysis could be a powerful tool to examine G x E interaction. If the number of environments was sufficient, a separate stability analysis could be run in each cluster.
The influence of row spacing and seeding rate on seed yield and yield components of forage turnip (Brassica rapa L.)
(Wiley, 2003-08) Bilgili, Uǧur; Sincik, Mehmet; Uzun, Ayşen; Açıkgöz, Esvet; Uludağ Üniversitesi/Ziraat Fakültesi/Tarla Bitkileri Bölümü.; AAH-1539-2021; AAH-1811-2021; AAG-7431-2021; 6506803244; 23989507900; 13004441000; 6602817346
The effects of four row spacings (17.5, 35.0, 52.5 and 70.0 cm) and five seeding rates (50, 100, 200, 400 and 800 viable seeds m-2) on seed yield and some yield components of forage turnip (Brassica rapa L.) were evaluated under rainfed conditions in Bursa, Turkey in the 1998-1999 and 1999-2000 growing seasons. Plant height, stem diameter, pods/terminal raceme, total pods/plant, seeds/pod and primary branches/plant were measured individually. The number of plants per unit area was counted and the lodging rate of the plots was scored. The seed yield and 1000-seed weight were also determined. Row spacing and seeding rate significantly affected most yield components measured. The number of plants per unit area increased with increasing seeding rate and decreasing row spacing. Plant height was not greatly influenced by row spacing and seeding rate, but higher seeding rates reduced the number of primary branches and the stem diameter. The number of pods/main stem was affected by row spacing and but not by the seeding rate. Also, the number of seeds per pod was not affected by either the row spacing or the seeding rate. In contrast, the number of pods per plant clearly increased with increasing row spacing, but decreased with increasing seeding rate. The plots seeded at narrow row spacings and at high seeding rates were more sensitive to lodging. Seeding rate had no significant effect on seed yield in both years. Seed yield was similar at all seeding rates, averaging 1151 kg ha-1. However, row spacing was associated with seed yield. The highest seed yield (1409 kg ha-1) was obtained for the 35.0-cm row spacing and 200 seeds m-2 seeding rate combination without serious lodging problems.
Response of a cool-season turf mixture to composted chicken manure in a mediterranean environment
(Taylor and Francis, 2013-08-24) Bilgili, Uğur; Sürer, İrfan; Uzun, Pervin; Çalışkan, Necla; Açıkgöz, Esvet; Uludağ Üniversitesi/Ziraat Fakültesi/Tarla Bitkileri Bölümü.; AAH-1539-2021; 6506803244; 52464590800; 50263251200; 57213336818; 6602817346
The current study addresses the effects of topdressing composted chicken manure on established turf and comparing the composted chicken manure to a chemical nitrogen (N) fertilizer. Turf color, quality and clipping yields were correlated with N sources and application timing. Monthly fertilization resulted in a more uniform color and turf quality and less clipping yields than did comparable amounts of all N sources applied each as a single application in spring and spring and fall (S + F). The monthly and/or S + F topdressing of chicken manure composts increased the color and quality ratings of the turf mixture during the growing season but did not greatly affect the clipping production.
The response of pea genotypes differing in testa color to waterlogging during early germination stages
(Wfl Publication, 2009-04) Uzun, Ayşen; Açıkgöz, Esvet; Uludağ Üniversitesi/Ziraat Fakültesi/Tarla Bitkileri Bölümü.; AAG-7431-2021; 13004441000; 6602817346
Waterlogging tolerance of pea (Pisum sativum L.) genotypes classified in three testa colors (white, light green, dark green-brown) was investigated. Waterlogging response of the nine pea genotypes was evaluated at two constant temperatures (1 and 8 degrees C), two germination stages (swollen seeds and early seedlings) and for five waterlogging periods (3, 7, 10, 14 and 17 days) in a randomized complete design with four replications. The seedling stages and waterlogging periods significantly affected waterlogging tolerance of pea genotypes. Swollen seeds showed significantly better waterlogging tolerance and had higher survivals than the seedlings at both temperatures. Survival was significantly reduced with prolongation of waterlogging periods. Both swollen seeds and seedlings showed higher survivals at 1 degrees C than at 8 degrees C. The waterlogging tolerance of the pea genotypes was not closely associated with testa color. However, the pea genotypes with dark green-brown seeds exhibited better waterlogging tolerance than light green or white seeded genotypes at 8 degrees C. The EC values of swollen seeds and seedlings in the waterlogging treatments significantly correlated with survival at both germination stages and temperatures.

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