Genetic diversity analysis for yield and other agronomic traits in bread wheat under water logged sodic soil condition

Abstract

An experiment was conducted with 108 bread wheat accessions from
India and Australia to assess the genetic diversity for yield and yield
traits in waterlogged sodic soils. The genotypes were grouped into
eleven clusters and distribution pattern indicated that maximum
number of genotypes were grouped into the cluster IV (26) followed
by cluster VI (22) and cluster II (12). The inter-cluster distance in most
of the cases was higher than the intra-cluster distance, indicating
wider genetic diversity among the accessions of different groups. The
highest inter-cluster distance was observed between cluster VIII and
IX (113.94) followed by VIII and X (97.72), showing wide diversity
among the groups. The highest intra-cluster distance was observed
for the cluster X (13.96) and the lowest for the cluster VII (00.00).
Genotypes of cluster X had highest mean value for grain yield, harvest
index and spike weight. The genotypes in these clusters i.e. Perenjori,
KRL 261 and KRL 283 from cluster X, and Gutha from cluster IX may
be used as potential donors for hybridization programme to develop
genotypes with high grain yields in waterlogged sodic soils.