Correlations among Characters and Ascochyta Blight Disease Severities in Chickpea Breeding Lines

摘要

The yield and yield components , association among characters, direct and indirect effects of various characters on seed yield and Ascochyta blight disease severities of sixty-nine F₄ chickpea lines from FLIP 83-47CxILC 482 crossing and two parents were investigated at Diyarbakir in 1998. The chickpea lines differed significantly for all characters and minimum-maximum values and coefficient variation of % were determined for each character. The results of association among characters indicated that the seed yield /plant was correlated strongly and positively with number of pods/plant (0.64**) and number of seeds/plant (0.65**). It was also determined that there was a positive significant relationship (0.29**) between Ascochyta blight disease severity and 100 seed weight. Path analysis showed that number of seeds/plant had the greatest positive direct effect on seed yield /plant. Wide variations were observed for the mean Ascochyta blight disease severity in F₄ lines. Disease indices of lines changed from 5.0 to 8.9 and some lines were classified as tolerant.