Ecology, Environment and Conservation Paper

Vol 29, Issue 1, 2023; Page No.(195-199)

STUDIES ON GENETIC VARIABILITY, HERITABILITY AND GENETICADVANCE IN GARDEN PEA (PISUM SATIVUM L.) GENOTYPESUNDER THE CENTRAL DRY ZONE OF KARNATAKA, INDIA

G. K. Latha, Prakash Kerure, V. Srinivasa, Y. Kantharaj, A. N. Ramesh,Devaraju, T.S. Aghora and K. Vaishnavi

Abstract

A field experiment was carried out to determine the genetic variability, heritability and Geneticadvancepresent in twenty-two genotypes of garden pea during Rabi season 2021-22 at ICAR-Krishi Vigyan Kendra,Babbur farm, Hiriyur. The experiment was laid out in Randomized Complete Block Design with tworeplications. Observations were recorded on various yield and yield contributing characters. In general,the magnitude of the phenotypic coefficient of variation (PCV) was greater than that of the genotypiccoefficient of variation (GCV) and the narrow difference between them indicates less environmental influenceon the expression of the trait. High PCVand GCV (>20%) were recorded on plant height, number of branchesper plant, pod thickness, number of pods per plant and non-reducing sugars which indicates the presenceof high genetic variation and scope for effective improvement. All the characters studied in thisexperimentshowed high heritability (>60%) in a broad sense coupled with high genetic advance as per cent over amean (>20%) except for days to first flowering, days to 50 per cent flowering and days taken for firstpicking. This indicates the existence of additive gene action and the need for population improvementthrough selection. The genotypes that exhibit specific traits can be used in a hybridization programme.