Identification of Sunflower (Helianthus annuus L.) Genotypes Tolerant to Water Stres

Authors : Ali Beyhan UÇAK

Pages : 312-322

Doi:10.15832/ankutbd.456645

View : 32 | Download : 14

Publication Date : 2018-09-05

Article Type : Research Paper

Abstract :The present research was carried out to determine water-stress tolerance of linoleic sunflower genotypes insert ignore into journalissuearticles values(P64LE119, PR63F73, P64LL62); grown under different water stress conditions [no water-stress insert ignore into journalissuearticles values(I100);; mild water-stress insert ignore into journalissuearticles values(I70);; strong water-stress insert ignore into journalissuearticles values(I35);] in the years 2015 and 2016. Variance analyses revealed significant differences between the genotypes insert ignore into journalissuearticles values(P<0.01);. As the average of two years, the greatest yield was obtained from no water-stress x genotype interaction insert ignore into journalissuearticles values(I100xP64LE119); with 4094.66 kg ha-1, the lowest yield was obtained from strong water stress x genotype interaction insert ignore into journalissuearticles values(I35xPR63F73); with 2487.81 kg ha-1. Again as the average of two years, the greatest chlorophyll content was obtained from no water-stress x genotype interaction insert ignore into journalissuearticles values(I100xP64LE119); with 49.83 spad, the lowest value was obtained from strong water stress x genotype interaction insert ignore into journalissuearticles values(I35xPR63F73); with 34.39 spad. The greatest crop water stress index was obtained from strong water stress x genotype interaction insert ignore into journalissuearticles values(I35xPR63F73); with 0.53, the lowest value was obtained from no water-stress x genotype interaction insert ignore into journalissuearticles values(I100xP64LE119); with 0.21. The P64LE119 genotype with optimum water use efficiency and prominent with crop water stress index and chlorophyll content both in no water-stress and strong water stress treatments was identified as water stress-resistant and the genotype was considered to have reliable characteristics potentially to be used in further water stress-resistance studies.  
Keywords : Sunflower, Water stress, Crop water stress index, Tolerance, Chlorophyll