GENETIC STUDIES IN FRENCH BEAN (Phaseolus vulgaris L.) UNDER LOW HILL CONDITIONS OF HIMACHAL PRADESH
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Date
2020-10-19
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COLLEGE OF HORTICULTURE AND FORESTRY, DR Y S P UHF, NERI, HAMIRPUR
Abstract
The present investigation entitled “Genetic studies in French bean (Phaseolus vulgaris L.) under low hill conditions of Himachal Pradesh” was carried out during autumn 2019 at Experimental Research Farm, Department of Vegetable Science, College of Horticulture and Forestry, Neri, Hamirpur (HP). 18 genotypes including check variety Contender were evaluated for 16 quantitative (including prevalence of Anthracnose disease) and 5 qualitative traits in Randomized Complete Block Design with three replications to estimate the extent of variability, heritability and genetic advance, correlation and path coefficient analysis for yield and other horticultural traits. Analysis of variance showed significant differences among all the genotypes with respect to the characters studied. The Genotype FBCOHF-NERI-3 (6.49 kg) was found to be the best in terms of the character yield per plot followed by genotypes viz. FB-COHF-NERI-14, Contender, Pusa Parvati and FB-COHF-NERI-4 which were also statistically at par with the best genotype. The least disease incidence for Anthracnose was reported in the genotype FB-COHF-NERI-4 (32.67%) of French bean. High GCV and PCV values were exhibited by the characters viz. 100-seed weight, number of pods per plant, pod yield per plot and marketable pod yield per plant. High heritability estimates were recorded for the traits 100-seed weight, number of days to final picking, plant spread, weight of pod, number of days to first picking, marketable pod yield per plant, pod yield per plot, number of pods per plant, days taken to 50% flowering, days to marketable maturity, plant height and number of seeds per pod. However, high estimates of genetic advance were observed for the trait plant spread. The correlation studies at genotypic and phenotypic level revealed that pod yield per plot had positive and significant association with the horticultural traits viz. number of days to final picking, number of pods per plant, pod length, pod width, weight of pod, plant height, 100-seed weight and marketable pod yield per plant. Path analysis studies revealed that positive and direct effect on the dependent character pod yield per plot was registered by the dependent traits like marketable pod yield per plant, weight of pod, plant height, 100-seed weight, number of days to first picking, number of primary branches, number of pods per plant, number of seeds per pod, days to 50% flowering, pod width, pod length and plant spread.