Genetic variability and character association for growth and yield  characters in Dolichos bean (Lablab purpureus var. typicus) under  rainfed semi-arid conditions

Gangadhara K; L P Yadav; AK Singh; V V Appa  Rao; A K  Verma; P  Ravat

doi:10.48165/

Authors

Gangadhara K Central Horticultural Experiment Station (ICAR-CIAH), Vejalpur, Godhra, Gujarat, India
L P Yadav Central Horticultural Experiment Station (ICAR-CIAH), Vejalpur, Godhra, Gujarat, India
AK Singh Central Horticultural Experiment Station (ICAR-CIAH), Vejalpur, Godhra, Gujarat, India
V V Appa Rao Central Horticultural Experiment Station (ICAR-CIAH), Vejalpur, Godhra, Gujarat, India
A K Verma ICAR-Central Institute for Arid Horticulture, Bikaner
P Ravat Central Horticultural Experiment Station (ICAR-CIAH), Vejalpur, Godhra, Gujarat, India

DOI:

https://doi.org/10.48165/

Keywords:

GCV, PCV, Heritability, Association, Genotype

Abstract

The genetic variability and character association were studied in 60 genotypes of dolichos bean (Lablab purpureus var. typicus L.) during 2018-2023 at Central Horticultural Experiment Station (ICAR- CIAH), Panchmahals (Godhra), Gujarat. A degree of variation was observed for all characters. High Phenotypic Co-efficient of Variation (PCV) and Genotypic Co-efficient of Variation (GCV) were recorded for primary branches/plant, number of pods/plant, Pod length, pod weight and pod yield/plant. The high PCV and GCV were recorded for primary branches/plant, number of pods/plant, pod length, pod weight and pod yield/plant indicated maximum variability in the genotypes. High heritability coupled with high genetic advance as per cent mean was observed for plant height, number of primary branches/plant, number of pods/plant, pod length, pod girth, pod weight and pod yield/plant indicating that these characters are controlled by additive gene action. Thus, selection for these characters will improve the yield. Pod yield/ plant exhibited positive and highly significant correlation with number of branches, number of pods/plant, pod length, pod girth, pod weight at both genotypic and phenotypic levels. Hence these traits should be considered as important selection criteria for improvement of pod yield/plant.

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