Genetic divergence in Chickpea
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Date
2017
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Dr. Rajendra Prasad Central Agricultural University, Pusa (Samastipur)
Abstract
One hundred twenty chickpea genotypes including one check were evaluated to identify suitable genotypes of chickpea for input intensive agriculture and to study the analysis of variance, mean performance, Genetic variability, correlation coefficient, path analysis and genetic divergence. The data were recorded on eleven quantitative characters including total seed yield per plant. The mean data of five randomly taken plants were used for statistical analysis.Significant differences were observed among genotypes for all the characters suggesting that there is preponderance of variability among the material used for study.
Very meger differences were observed between phenotypic coefficient of variance and genotypic coefficient of variance indicating that the expression of the characters are being govern by the genotype.
High heritability coupled with high genetic advance as per cent of mean recorded for the traits grain per pod, score of wilt incidence, pod borer infestation, hundred seed weight, harvest index, pod per plant and total seed yield indicating the presence of additive gene action.
Hundred seed weight, exhibited positive and significant correlation with the total seed yield comprising the positive and high indirect effect of harvest index, where as harvest index also exhibited positive and significant correlation with total seed yield having their own positive and high direct effect.
Hundred twenty chickpea genotypes were distributed in twelve clusters. Maximum number of genotypes (26) were present in cluster VI and minimum number of (3) genotypes present in cluster I and XI. Maximum and minimum inter cluster distance were obtain between V and XI and II and V were as maximum and minimum intra cluster distance was observed in cluster I and cluster XII.
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