“Studies on Genetic Variability, Heritability and Genetic Advance in French Bean (Phaseolus vulgaris L.) Genotypes.”
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Date
2021-01-15
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College of Horticulture and Forestry, Central Agricultural University, Pasighat
Abstract
An experiment entitled “Studies on Genetic Variability, Heritability and Genetic Advance in French Bean (Phaseolus vulgaris L.) Genotypes” was conducted at vegetable research farm, Deptt. of Vegetable Science, CHF, CAU, Pasighat, Arunachal Pradesh during the year 2019-20. The RBD was used with 26 treatments with three replications.. High PCV and GCV, heritability and genetic gain were observed for all the characters undertaken. Corelation studies indicated that pods yield per plant was positive and significantly corelated with day of first flowerfollowed by day of 50% flower, day of 1st harvest, no. of pods/plant, plant height, pod weight, pod girth, pod length, no. of seeds/pod and reducing sugar. Path analysis revealed that maximum positive direct effect on pod yield per plant was imposed by pod length followed by days to 1st flowering, plant height, vitamin C, protein content, number of primary branches, number of seeds/pod, vitamin A and reducing sugar. This indicated that these are the real independent characters and have maximum contribution towards increase in pods yield per plant. Divergence study revealed that pod yield per plant contributed maximum percent to the diversity followed by number of seed per plant, pod length, vitamin A, pod weight, nonreducing sugar, pod girth, reducing sugar and vitamin C. Other characters have no contribution to diversity. Maximum inter cluster distance was observed between cluster I and IV which indicated that the genotypes within these clusters were highly divergent. The minimum distance was observed between cluster I and V which indicated close relationship among the genotypes included in these two clusters
Description
An experiment entitled “Studies on Genetic Variability, Heritability and Genetic Advance in French Bean (Phaseolus vulgaris L.) Genotypes” was conducted at vegetable research farm, Deptt. of Vegetable Science, CHF, CAU, Pasighat, Arunachal Pradesh during the year 2019-20. The RBD was used with 26 treatments with three replications.. High PCV and GCV, heritability and genetic gain were observed for all the characters undertaken. Corelation studies indicated that pods yield per plant was positive and significantly corelated with day of first flowerfollowed by day of 50% flower, day of 1st harvest, no. of pods/plant, plant height, pod weight, pod girth, pod length, no. of seeds/pod and reducing sugar. Path analysis revealed that maximum positive direct effect on pod yield per plant was imposed by pod length followed by days to 1st flowering, plant height, vitamin C, protein content, number of primary branches, number of seeds/pod, vitamin A and reducing sugar. This indicated that these are the real independent characters and have maximum contribution towards increase in pods yield per plant. Divergence study revealed that pod yield per plant contributed maximum percent to the diversity followed by number of seed per plant, pod length, vitamin A, pod weight, nonreducing sugar, pod girth, reducing sugar and vitamin C. Other characters have no contribution to diversity. Maximum inter cluster distance was observed between cluster I and IV which indicated that the genotypes within these clusters were highly divergent. The minimum distance was observed between cluster I and V which indicated close relationship among the genotypes included in these two clusters