نوع مقاله : مقاله پژوهشی
1 دانشجوی کارشناسی ارشد، دانشکدۀ کشاورزی و منابع طبیعی دانشگاه خلیجفارس
2 عضو هیات علمی دانشگاه خلیج فارس(بوشهر)
3 دانشیار پژوهشی، بخش تحقیقات علوم زراعی و باغی، مرکز تحقیقات و آموزش کشاورزی و منابع طبیعی استان کردستان، سازمان تحقیقات، آموزش و ترویج کشاورزی، سنندج، ایران
4 استادیار، دانشکدۀ کشاورزی و منابع طبیعی دانشگاه خلیجفارس
عنوان مقاله [English]
This study was conducted to assess the relationship of some yield related traits and relative resistance to ascochyta blight disease in 36 Kabuli chickpea genotypes. Field trial was conducted in a simple lattice design with two replications and the genotypes resistance was assayed in a factorial experiment (factors include genotype and some disease pathotypes reported of Iran) based on randomized complete block desingn with three replications. Various phenological and morphological traits, yield, yield components and some of traits related to resistance were measured. Significant differences were showed between genotypes for number of empty pods, number of main branches and days to maturity at 5% and for yield, plant height and 100-kernel weight at 1% probability level. Genotype 32 with an average of 119.29 grams grain per square centimeter had the highest yield. The number of pods and number of seed per plant had the highest correlation(r=0.57**) with grain yield. Stepwise regression analysis introduced number of seeds per plant, number of seeds per pod and plant height with 51% justify changes as most effective traits. Path analysis result showed that the number of seeds per plant has the most direct effect (-0.39) on grain yield. In disease resistance assaying, Effects of genotypes, pathotypes and their interaction were significant at 99% probability. Cluster analysis set the genotypes into three groups; resistant, tolerant and sensitive. 11, 4 and 20 genotypes were placed in resistant, tolerant susceptible groups, respectively. Genotype 20 was highly resistant and genotypes 30 and 32 were identified as highly susceptible.