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    CORRELATIONS BETWEEN CANOPY TEMPERATURE, CHLOROPHYLL CONTENT AND YIELD IN HEAT TOLERANT COTTON (GOSSYPIUM HIRSUTUM L.) GENOTYPES
    (Parlar Scientific Publications (P S P), 2018) Karademir, Emine; Karademir, Cetin; Sevilmis, Ugur; Basal, Huseyin
    The study aimed to determine relationships among canopy temperature, chlorophyll content, seed cotton yield and fiber quality properties and using these relationships to screen large material in cotton breeding program under field conditions for heat tolerance. In this study 140 lines and 5 control varieties (Stoneville 468, DP 499, SJ-U 86, AGC 85 and AGC 208) were used as plant material. Field experiment was conducted as augmented design with four blocks. Canopy temperature (CT) measured three times during cotton growing, pre-flowering peak flowering and post flowering, on the other hand chlorophyll content was measured in peak flowering stage. The results of this study indicated that seed cotton yield significantly correlated with canopy temperature and was not affected by crop stage development.
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    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, Cetin
    One 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.
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    Yield & fiber technological traits of advanced cotton lines developed by line tester mating design
    (Parlar Scientific Publications, 2017) Karademir, Cetin; Karademir, Emine; Sevilmis, Ugur
    The purpose of this study was to determine yield and fiber technological characteristics of advanced cotton lines developed by crossing parents which were selected in terms of their genetic diversity and genetic distances and comparing them with controls. The research has been carried out in GAP International Agricultural Research and Training Center experimental area during 2013 and 2014 cotton growing season. Developed 10 advanced lines and 2 cotton cultivars (GW Teks and Stoneville 468) were used as material. The study was conducted in randomized complete block design with four replications. The statistical results showed that there were significant differences between lines/varieties in terms of all observed characteristics. The effect of year was significant for seed cotton yield, fiber yield, first picking percentage, ginning percentage, fiber fineness and fiber elongation. Year x variety interaction was significant for seed cotton yield, fiber yield, fiber uniformity index and short fiber index. According to the results of this study it was determined that Fiber Max 832 x Stv 453; Fiber Max 832 x Stv 453/2 for seed cotton yield and fiber yield; Stoneville 453, Tam 94 L 25 x Stv 453 and Fiber Max 832 x Stv 453 for ginning percentage; Tam 94 L 25 x Stv 453/2 for fiber fineness and fiber length; GW Teks, Giza 45 x Sayar 314 and GW Teks x Stv 453 for fiber strength were promising varieties. © by PSP.
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    YIELD AND FIBER TECHNOLOGICAL TRAITS OF ADVANCED COTTON LINES DEVELOPED BY LINE TESTER MATING DESIGN
    (Parlar Scientific Publications (P S P), 2017) Karademir, Cetin; Karademir, Emine; Sevilmis, Ugur
    The purpose of this study was to determine yield and fiber technological characteristics of advanced cotton lines developed by crossing parents which were selected in terms of their genetic diversity and genetic distances and comparing them with controls. The research has been carried out in GAP International Agricultural Research and Training Center's experimental area during 2013 and 2014 cotton growing season. Developed 10 advanced lines and 2 cotton cultivars (GW Teks and Stoneville 468) were used as material. The study was conducted in randomized complete block design with four replications. The statistical results showed that there were significant differences between lines/varieties in terms of all observed characteristics. The effect of year was significant for seed cotton yield, fiber yield, first picking percentage, ginning percentage, fiber fineness and fiber elongation. Year x variety interaction was significant for seed cotton yield, fiber yield, fiber uniformity index and short fiber index. According to the results of this study it was determined that Fiber Max 832 x Sty 453; Fiber Max 832 x Sty 453/2 for seed cotton yield and fiber yield; Stoneville 453, Tam 94 L 25 x Sty 453 and Fiber Max 832 x Sty 453 for ginning percentage; Tam 94 L 25 x Sty 453/2 for fiber fineness and fiber length; GW Teks, Giza 45 x Sayar 314 and GW Teks x Sty 453 for fiber strength were promising varieties.