Genetic divergence studies in rice bean [Vigna umbellata (Thumb) ohwi and ohashi]
Loading...
Date
2012
Authors
Journal Title
Journal ISSN
Volume Title
Publisher
CCSHAU
Abstract
Sixty five Genotypes of Rice bean were evaluated for ten traits at research area of MAU&UP
(Medicinal Aromatic and Under Utillized Plants) section, Department of Plant Breeding, CCS Haryana
Agricultural University, Hisar. All the genotypes have significant genetic variability. Characters seed
yield per plant, clusters per plant and pods per plant traits exhibited high variability, while other traits
exhibited moderate and low variability. Seed yield per plant exhibited positive and significant
correlation with number of pods per plant, number of clusters per plant, pod length, number of
branches per plant, number of seeds per pod, 100-seed weight and plant height. Path coefficient
analysis revealed that number of clusters per plantfollowed by pod length, days to maturity, number of
pods per plant, 100-seed weight, number of seeds per pod and number of branches per plant were main
contributor towards seed yield per plant.
Following non-hierarchical Euclidean cluster analysis all the 65 genotypes were grouped into
8 clusters with variable number of genotypes. On the basis of data on genetic divergence and mean
performance of metric traits, ten diverse and superior genotypes namely HRB-12, RBL-160, LRB-412,
LRB-314, LRB-313, LRB-126, LRB-453, LRB-235 and RBL-35 were identified as promising for most
of the traits traits. Therefore, these genotypes may be involved in a multiple crossing programme to
recover transgressive segregants for the further improvement of Rice bean.
Description
Keywords
Planting, Yields, Genotypes, Developmental stages, Sowing, Genetics, Beans, Rice, Biological phenomena, Selection