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Öğe Assessment of Tolerance Level of some Cotton (Gossypium hirsutum L.) Varieties against Verticillium wilt (Verticillium dahliae Kleb.)(2010-10-01) Karademir, Emine; Karademir, Çetin; Ekinci, Remzi; Baran, Behzat; Sağır, AbuzerThe objective of this study was to assess the tolerance level of some cotton varieties against Verticillium wilt (Verticillium dahliae Kleb.) disease. Verticillium wilt is one of the major constraint diseases of cotton production worldwide and also in Turkey. The study was carried out at the Southeastern Anatolia Agricultural Research Institute’s naturally infected experimental area during 2004-2006. In this study, 10 different commercial cotton varieties were used as plant material. The experimental design was a randomized complete-block with four replications. During the cotton growing season, foliar disease index (FDI), vascular disease index (VDI) and vascular disease rate (VDR) were observed in addition to seed cotton yield and some fiber quality characteristics. According to the results, it was determined that with regards to FDI, VDI and VDR, the most tolerant varieties were ‘GW-Teks’, ‘GW-Golda’ and ‘Carmen’, while the most sensitive varieties were ‘Maraş 92’, ‘Sayar 314’ and ‘Stoneville 453’. The other varieties had moderate tolerance levels. The highest seed cotton yield and lint yield were obtained from ‘DP-Deltaopal’ and ‘Stoneville 453’. These results showed that some sensitive varieties had high yield; the reason for this situation may be related with early or late occurrence of the disease. The result of this study indicated that ‘GW-Teks’, ‘GW-Golda’ and ‘Carmen’ varieties must be preferred for infected areas; on the other hand, ‘DP-Deltaopal’ and ‘Stoneville 453’ can be recommended and grown in uninfected areas. Additionally, ‘Carmen’, ‘GW-Teks’ and ‘GW-Golda’ varieties can be used as material for improving disease resistance in cotton breeding programs.Öğe Bazı Pamuk (Gossypium hirsutum L.) Genotiplerinin Doğu Akdeniz ve GAP Bölgesine Uyum Yetenekleri ile Stabilite Analizleri(Harran Tarım ve Gıda Bilimleri Dergisi, 2017-02-16) Güvercin, Ramazan Şadet; Karademir, Emine; Karademir, Çetin; Özkan, Nazife; Ekinci, Remzi; Borzan, GüvenThe main goal of cotton breeding is high yield that affected by the genetic potential of genotypes, environment and cultural applications during the season. This study was conducted to evaluate adaptability and stability of twelve cotton (Gossypium hirsutum L) genotypes in four different environments (Kahramanmaraş, Şanlıurfa, Diyarbakır and Kızıltepe/Mardin) in Turkey and effects of genotype x environment interaction on seed cotton yield in the years of 2006 and 2007. The all experiments in the environments were conducted as randomized complete blocks design with three replications. As average of two years, significant differences were determined among environments, years and genotypes for seed cotton yield. Average seed cotton yield of genotypes ranged from 420.5 kg da-1 (Stoneville 468) to 314.6 5 kg da-1 (ÇA 3) while the averages of years were 394.2 kg da-1 (2006) and 350.6 kg da-1 (2007). The genotypes were tested by stability parameters such as environmental index, genotypes index, mean of genotypes , within-genotype mean square , coefficient of variation , ecovalence , stability variance, regression coefficient, deviations from regression mean square , coefficient of determination , regression line intercept (a), standard error of averages, variance and standard deviation. The results indicated that genotypes BA 308 and Dicle 2000 were the most productive with high mean yield and suitable for all the environments. Genotypes Stoneville 468, BA 119 and Erşan 92 can be suggested for relatively worse environmental conditions than BA 308, Dicle 2000 and Maraş 92.Öğe Combining Ability Estimates and Heterosis for Yield and Fiber Quality of Cotton in Line x Tester Design(Notulae Botanicae Horti AgrobotaniciCluj-Napoca, 2009-09-01) Karademir, Çetin; Karademir, Emine; Ekinci, Remzi; Gençer, OktayThe objective of this study was to facilitate the selection in cotton breeding program and estimate the general combining ability (GCA) of the parents and specific combining ability (SCA) of hybrids considered for the development of high yielding and better fiber quality in early generations. The study was carried out at the Southeastern Anatolia Agricultural Research Institute during 2006 and 2007 cotton growing season. Seven cotton lines (which are known as high quality) and three testers (which are known as well adapted and high yielding) were crossed in a line x tester mating design in 2006. Ten genotypes and 21 F1 hybrids were planted in the randomized complete block design with three replications at the same experimental area in 2007. The variance due to GCA and SCA were highly significant for all the traits studied. This indicated that both additive and non-additive gene effects were responsible for the investigated characters. From the trial it was found that in the population, fiber length, fiber fineness and fiber elongation were influenced by additive gene effects while seed cotton yield, fiber yield, ginning percentage, fiber strength and fiber uniformity were influenced by non-additive gene effects. Among the parents FiberMax 832, Teks, Stoneville 453 and Maraş 92 for seed cotton yield and fiber yield; Aşkabat 71 and Giza 45 for fiber length and fiber strength; Aşkabat 71 for fiber fineness and fiber uniformity were detected with higher general combining ability. Most of the parents except Aşkabat 71, Giza 45 and Maraş 92 exhibited GCA for ginning percentage. SCA was significant for FiberMax 832 x Stoneville 453, Tam 94 L 25 x Maraş 92 and Teks x Stoneville 453 hybrid combinations for yield with acceptable fiber quality.Öğe Correlations and Path Coefficient Analysis between Leaf Chlorophyll Content, Yield and Yield Components in Cotton (Gossypium hirsutum L.) under Drought Stress Conditions(Notulae Botanicae Horti Agrobotanici Cluj-Napoca, 2009-09-01) Karademir, Çetin; Karademir, Emine; Ekinci, Remzi; Gençer, OktayIn this study 20 genotypes, including 2 cultivars and 18 advanced cotton lines were grown under induced drought stress conditions. Twenty cotton genotypes were evaluated in terms of leaf chlorophyll content, number of boll per plant, boll weight, seed cotton weight per boll, number of monopodial branches, number of sympodial branches, 100 seed weight, plant height, ginning out turn and seed cotton yield. According to results of analysis of variance there were significant differences among the genotypes in terms of leaf chlorophyll content, seed cotton weight per boll, 100 seed weight, plant height and ginning out turn. There were significant correlations between leaf chlorophyll content, seed cotton yield (r= 0.231*) and ginning out turn (r= 0.320**), however positive but non- significant correlations were observed among leaf chlorophyll content and other investigated characteristics except for plant height and 100 seed weight. Phenotypic correlations were also partitioned into path coefficients, keeping seed cotton yield as the resultant variable and other components as causals. Path analysis revealed that leaf chlorophyll content, plant height, number of monopodial branches, ginning out turn and 100 seed weight had direct effect on seed cotton yield under drought stress conditions. Partitioning through path coefficient analysis revealed that leaf chlorophyll content may be one of the indicators in the improvement of seed cotton yield in cotton under drought stress conditions.Öğe Effect of Verticillium dahliae Kleb. on cotton yield and fiber technological properties(International Journal of Plant Production, 2012-05-26) Karademir, Emine; Karademir, Çetin; Ekinci, Remzi; Baran, Behzat; Sağır, AbuzerThe objective of this study was to determine the effect of Verticillium dahliae Kleb. on cotton yield and fiber technological properties, relationships among to disease and seed cotton yield, fiber yield and fiber technological properties and also determine susceptible and tolerant cotton varieties. The study was conducted in the Southeastern Anatolia Agricultural Research Institute’s experimental area during 2004-2006. The experiment was arranged as a randomized split block design with four replications. Main plot consisted of infected and non-infected area, sub-plot consisted of varieties. In this study 10 different commercial cotton varieties were grown to test the verticillium wilt performance. The results indicated that there were significant differences among varieties for all of the investigated characteristics. Area differences were significant for all of the investigated traits except ginning percentage. The results of the non-infected area showed that there were decreasing with regard to foliar disease index (FDI), vascular disease index (VDI), vascular disease rate (VDR), first picking percentage, fiber fineness, micronaire and yellowness; while increasing with regard to seed cotton yield, fiber yield, fiber length, strength, elongation, uniformity, reflectance and spinning consistecy index. Only ginning percentage was unaffected from area differences. With planting cotton varieties in non-infected area there were 323.60 kg ha-1 increase for seed cotton yield and 114.50 kg ha-1 for lint yield. Disease led to a decrease (7.86%) in seed cotton yield and (6.73%) in fiber yield. The results of this study indicated that GW-Teks, GW-Golda and Carmen varieties were tolerant; while Maraş 92, Sayar 314 and Stoneville 453 were sensitive in terms of FDI, VDI and VDR and tolerant varieties can be used as parents in Verticillium breeding programs.Öğe THE EFFECTS OF HIGH TEMPERATURE STRESS ON SOME AGRONOMIC CHARACTERS IN COTTON(Pakistan Journal of Botany, 2017-04-04) Ekinci, Remzi; Başbağ, Sema; Karademir, Emine; Karademir, ÇetinHigh temperature is one of the abiotic stress causing morphological, physiological, biochemical and molecular changes on plant growth and productivity. One hundred and sixty cotton genotypes obtained from genetic stocks was evaluated for high temperature tolerance based on some agronomic characters under field and controlled conditions. Genotypes showed differences for all investigated characters. Plant height, node number and HNR ranged from 68.38-136.45 cm, 18.22-30.10 number.plant-1, 2.89-6.31 (HNR) respectively. Maximum and minimum values in terms of number of sympodial branches, boll abscission at first position, number of seed and seed-cotton yield changed from 11.09-24.42 number.plant-1; 4.17%-20.80%; 20.39-44.11 number.boll-1 and 5.74-60.30 gr.plant-1 respectively. Differences among genotypes were statistically significant for all characters under high temperature stress conditions. High temperature stress was declined the cotton plant development, the decline are important for cotton breeders and cotton breeding programs on the genotypes less affected from high temperature.Öğe İleri Generasyondaki Pamuk (Gossypium hirsutum L.) Hatlarında Verim ve Lif Kalite Özelliklerinin Belirlenmesi(2015) Karademir, Emine; Karademir, Çetin; Ekinci, Remzi; Sevilmiş, UğurBu araştırma pamukta yapılan melezleme çalışmaları sonucunda geliştirilen ileri generasyondaki hatlarda verim ve lif kalite özelliklerini belirlemek amacıyla GAP Uluslararası Tarımsal Araştırma ve Eğitim Merkezi Müdürlüğü deneme alanında 2013-2014 yılları arasında iki yıl süre ile yürütülmüştür. Çalışmada 6 adet ileri generasyondaki pamuk hattı ile 2 adet kontrol çeşit (Stoneville 468 ve GW Teks) materyal olarak kullanılmıştır. Denemeler tesadüf blokları deneme desenine göre 4 tekrarlamalı olarak yürütülmüştür. Çalışmada; kütlü pamuk verimi ve çırçır randımanı özelliklerinde genotip farklılığının önemli olduğu, lif uzunluğu, lif kopma dayanıklılığı, lif kopma uzaması, lif üniformite oranı yönünden hem genotip ve hem de yıl farklılığının önemli olduğu, kısa lif indeksi özelliğinde genotip, yıl ve genotip x yıl interaksiyonunun önemli bulunduğu, ilk el kütlü oranı ve lif inceliği özelliklerinin ise sadece yıl farklılığından önemli derecede etkilendiği belirlenmiştir. Araştırma sonucunda kütlü pamuk verimi yönü ile GW Teks, KP-24, 2/2 ve 6/1 Nolu genotiplerin, çırçır randımanı yönü ile 30/4 ve Stoneville 468 hat/çeşitlerinin yüksek değer göstererek aynı istatistiki grupta yer aldıkları saptanmıştır. Lif uzunluğu yönünden Stoneville 468 çeşidi dışındaki tüm genotipler aynı istatistiki grupta yer almışlardır. Lif kopma dayanıklılığı, lif üniformite oranı ve kısa lif içeriği özelliklerinde GW Teks kontrol çeşidinin, lif kopma uzaması yönü ile de Stoneville 468 ve 2/2 Nolu genotiplerin daha yüksek değerlere sahip oldukları belirlenmiştir.Öğe Relationship between Yield, Fiber Length and other Fiber-Related Traits in Advanced Cotton Strains(Notulae Botanicae Horti AgrobotaniciCluj-Napoca, 2010-10-01) Karademir, Emine; Karademir, Çetin; Ekinci, Remzi; Gençer, OktayThe objective of this study was to determine the relationship between yield, fiber length and other fiber related traits in advanced cotton strains, derived from a cotton breeding program. The experiments were conducted in the Southeastern Anatolia Agricultural Research Institute’s experimental area according to randomized complete block design (RCBD) with four replications during 2007 and 2008 cotton growing season. In the study, 9 advanced cotton strains and 2 check varieties (‘GW-Teks’ and ‘Stoneville 468’) were used as plant materials. The results of the statistical analysis indicated that the advanced cotton strains had significant differences in terms of the investigated characteristics when compared to the check varieties. The highest seed cotton yield (4087.0 kg ha-1) and fiber yield (1632.2 kg ha-1) were obtained from ‘SET-34’ cotton strain which had acceptable fiber quality properties. However, the highest fiber length (32.33 mm) was obtained from ‘ERA-85’. The correlation analysis indicated that there were significant negative correlations between fiber length and seed cotton yield, lint yield and ginning percentage, while there were positive and significant correlations between fiber length and fiber strength.Öğe Screening cotton varieties (Gossypium hirsutum L.) for heat tolerance under field conditions(African Journal of Agricultural Research, 2012-12-13) Karademir, Emine; Karademir, Çetin; Ekinci, Remzi; Başbağ, Sema; Başal, HüseyinFifteen upland cotton Gossypium hirsutum L., were evaluated for heat tolerance based on agronomical and physiological characteristics under field conditions where temperature exceeded 40°C in July and August. Genotypes showed statistically significant differences for stomatal conductance, photosynthetic yield, fluorescence, photosynthetically active radiation (PAR), seed cotton yield, plant height, boll weight, seed cotton weight, number of seeds per boll and 100 seed weight. In the study, relative cell injury level (RCIL), ranged from 54.56 to 79.44% and stomatal conductance ranged from 264.86 to 570.50 mol m-2s-1. Associations between investigated traits indicated that there were some positive correlations. These data indicated that photosynthetic yield, fluorescence, chlorophyll content (SPAD value), cell membrane thermostability (CMT), plant height and number of bolls per plant can be used for improving seed cotton yield. However, among these measurements CMT, SPAD value and fluorescence were more practical in large breeding trials. The results showed that AGC 375 and AGC 208 cotton varieties had lower relative cell injury level (higher cell membrane thermostability) and higher seed cotton yield and photosynthetic yield than other investigated varieties.Öğe SCREENING FOR HIGH-TEMPERATURE TOLERANT COTTON (GOSSYPIUM SPP.) BY USING SOME PHYSIO-MORPHOLOGICAL LEAF TRAITS(Parlar Scientific Publications (P S P), 2018) Ekinci, Remzi; Basbag, Sema; Karademir, Emine; Karademir, CetinOne hundred sixty cotton genotypes obtained from genetic stocks were evaluated for high temperature tolerance based on some physio-morphological leaf traits under field conditions and controlled condition. Genotypes showed differences for all investigated traits. In the study, stoma] density ranged from 83.49-128.35 stomata. (mm(2))(-1), stomata] conductance ranged from 140.77-394.90 mmol.m(-2).s(-1), stoma] width ranged from 92.39-154.01 mu m, stomatal rate of width/length ranged from 0.42-0.58, canopy temperature ranged from 20.24-52.00 degrees C, leaf area ranged from 67.50-173.05 cm(2), leaf SPAD value ranged from 31.80-63.73, and leaf photosynthesis yield ranged from 12.72-33.05 The results showed that high temperature stress did not influence stoma numbers, whereas it decreased stomatal conductance, stomatal width, stomatal width/length, leaf area, leaf SPAD and leaf photosynthesis yield; and that it increased canopy temperature values. The Fantom was determined to be tolerant with respect to stomata] conductance trait and the Tropikal-225 genotype with respect to stoma width and width/length traits.Öğe Screening for high-temperature tolerent cotton (Gossypium Spp.) by using some physio-morphological leaf treats(Fresenius Environmental Bulletin, 2017-12-03) Ekinci, Remzi; Başbağ, Sema; Karademir, Emine; Karademir, ÇetinOne hundred sixty cotton genotypes obtained from genetic stocks were evaluated for high temper- ature tolerance based on some physio-morphological leaf traits under field conditions and controlled con- dition. Genotypes showed differences for all investi- gated traits. In the study, stomal density ranged from 83.49-128.35 stomata. (mm2)-1, stomatal conduct- ance ranged from 140.77-394.90 mmol.m-2.s-1, sto- mal width ranged from 92.39-154.01 µm, stomatal rate of width/length ranged from 0.42-0.58, canopy temperature ranged from 20.24-52.00 oC, leaf area ranged from 67.50-173.05 cm2, leaf SPAD value ranged from 31.80-63.73, and leaf photosynthesis yield ranged from 12.72-33.05 µmol.m-2s-1. The re- sults showed that high temperature stress did not in- fluence stoma numbers, whereas it decreased sto- matal conductance, stomatal width, stomatal width/length, leaf area, leaf SPAD and leaf photo- synthesis yield; and that it increased canopy temper- ature values. The Fantom was determined to be tol- erant with respect to stomatal conductance trait and the Tropikal-225 genotype with respect to stoma width and width/length traits.Öğe The effects of high temperature stress on some agronomic characters in cotton(Pakistan Botanical Society, 2017) Ekinci, Remzi; Basbağ, Sema; Karademir, Emine; Karademir, ÇetinHigh temperature is one of the abiotic stress causing morphological, physiological, biochemical and molecular changes on plant growth and productivity. One hundred and sixty cotton genotypes obtained from genetic stocks was evaluated for high temperature tolerance based on some agronomic characters under field and controlled conditions. Genotypes showed differences for all investigated characters. Plant height, node number and HNR ranged from 68.38-136.45 cm, 18.22-30.10 number.plant-1, 2.89-6.31 (HNR) respectively. Maximum and minimum values in terms of number of sympodial branches, boll abscission at first position, number of seed and seed-cotton yield changed from 11.09-24.42 number.plant-1; 4.17%-20.80%; 20.39-44.11 number.boll-1 and 5.74-60.30 gr.plant-1 respectively. Differences among genotypes were statistically significant for all characters under high temperature stress conditions. High temperature stress was declined the cotton plant development, the decline are important for cotton breeders and cotton breeding programs on the genotypes less affected from high temperature. © 2017, Pakistan Botanical Society. All rights reserved.Öğe Variability in Yield and Fiber Technological Properties of Cotton (Gossypium hirsutum L.)(Notulae Scientia Biologicae, 2011-09-01) Karademir, Emine; Karademir, Çetin; Ekinci, Remzi; Gençer, OktayThe aim of this study was to determine the variability in yield and fiber technological properties in advanced cotton lines developed through cotton breeding program of the Southeastern Anatolia Agricultural Research Institute (SAARI). The experiment was conducted in the SAARI’s experimental field according to Augmented Design (AD) with six replications. In the study, 66 advanced cotton breeding lines and 3 control varieties (‘Stoneville 468’, ‘GW-Teks’, and ‘Fantom’) were used as plant materials. Variation levels of 69 genotypes in yield and fiber technological properties were measured. Minimum and maximum values were 3337.60-6644.20 kg ha-1 for seed cotton yield, 1277.10-2659.20 kg ha-1 for fiber yield, and 34.28-41.70% for ginning percentage. Statistical analysis indicated that great majority of the plants (47.82%) had values between 4990.90-5817.55 kg ha -1 for seed cotton yield and 53.62% had values between 1968.15-2313.68 kg ha -1 for fiber yield. It was determined that ginning percentage was more than 39.85% for the 10.14%, fiber length was more than 29.76 mm for the 18.84%, fiber strength was more than 31.78 g tex-1 for the 8.7%, and fiber uniformity was more than 86.55% for the 13.05% of the materials. It was also determined that 1.45% of the material was very thin and 13.04% of the material was above 6.59% for fiber elongation and for short fiber index of 46.38% of the material ranged from 6.90 to 7.63.Öğe Yield and fiber quality properties of cotton (Gossypium hirsutum L.) under water stress and non-stress conditions(African Journal of Biotechnology, 2011-07-13) Karademir, Çetin; Karademir, Emine; Ekinci, Remzi; Berekatoğlu, KudretThe primary objective of this study was to determine the effect of water stress and non-stress conditions on cotton yield and fiber quality properties. A two-year field study was carried out at the Southeastern Anatolia Agricultural Research Institute (SAARI), in 2009 and 2010, with the aim of evaluating 12 cotton genotypes for yield and fiber quality properties under irrigated and water stress conditions. The experiment was laid out as a randomized split block design (RSBD) with four replications. Significant differences were observed among genotypes and water treatments for seed cotton yield, fiber yield, ginning percentage and all fiber quality properties except fiber uniformity. Yield differences among genotypes under water stress and non-stress conditions were higher during the first season. In both years, SER-18 and Stoneville 468 cotton genotypes produced higher yield under water stress conditions, while Stoneville 468 produced higher yield under well-irrigated conditions. The results during the two years indicated that seed cotton yield decreased (48.04%) and fiber yield decreased (49.41%), due to water stress. Ginning percentage and fiber quality properties were also negatively affected by water stress treatment. Fiber length, fiber strength, fiber fineness and fiber elongation were decreased, while fiber uniformity was not affected by water stress treatment.
