Genetic variability, heritability and genetic advance for seed yield and related traits in diverse genotypes of pea (Pisum sativum L.)

An investigation was carried out with 64 genotypes of pea were tested using a randomized block experimental design with three replication in the Agriculture Research Farm of Institute of Agricultural Sciences, Banaras Hindu University, Varanasi (U.P.). The result showed highly significant difference for all the characters under study among sixty four germplasm lines. The variability, heritability and genetic advance as percent mean were studied for all the characters. A wide range of variation was found for all the characters. The seed yield per plant, the ultimate trait of improvement ranged from 4.06 gm in EC 322745 to 12.99 gm in HFP-14. Estimates of phenotypic variance (σ2p) were higher than genotypic variance (σ2g). The PCV and GCV was maximum for seed yield per plant (31.94 and 31.60) and minimum value for days to maturity (4.04 and 3.90). The broad sense heritability ranged from 87.62 (days to flowering) to 95.76 percent (plant height) and similarly, high genetic advance as percent of mean was found highest for seed yield per plant (64.42 %) and lowest value for days to maturity (7.75). Significant difference among genotypes for all characters performance out of 64 genotypes, ten genotypes (IPF-9981, KPMR-557, HFP-14, EC324108II, EC324112, HUP-5, EC328747, EC31363II, Rachana and JP-4) were found to be best genotypes for multiple traits, so these can be used as parent for future breeding programme.

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