GENETIC DIVERSITY AND CORRELATION STUDIES IN MULBERRY GERMPLASM
Loading...
Date
2010-07-15
Authors
Journal Title
Journal ISSN
Volume Title
Publisher
University of Agricultural Sciences GKVK, Bangalore
Abstract
Studies on genetic diversity and correlation studies in mulberry were
conducted during rainy and winter seasons of 2009 at Department of
sericulture UAS, GKVK, Bangalore. Ninety mulberry accessions were used
for this study. The range of variability was maximum for Plant height, total
shoot length, number of leaves per plant and leaf yield per plant. All
parameters studied were least affected by environment showing a close
correspondence between phenotypic coefficient of variation (PCV) and
genotypic coefficient of variation (GCV) in both seasons. High heritability
estimates were for all the parameters except leaf moisture content, leaf
moisture retention capacity at different hours and fruit traits.
Genetic diversity was assessed among rainy and winter season by
using Mahalanobis D2 statistics. The accessions were grouped into seven
clusters. Cluster II had maximum accessions of 38 in rainy and cluster I
had maximum accessions of 54 in winter seasons. The study revealed that
total shoot length contributed maximum to genetic divergence followed by
number of leaves per plant and single leaf area in both seasons. D2 values
ranged from 21.18 clusters III and IV and 105.62 between the clusters V
and VI in rainy season. D2 value 33.56 cluster I and V and 130.31 between
the clusters VII and I in winter season.
Association revealed high positive correlation of plant height, number
of branches per plant, intermodal distance and number of leaves per plant
on leaf yield per plant. Hence, it may concluded that these parameters
contributed maximum to higher leaf yield per plant compared to other
parameters.
Description
Keywords
null