Study on genetic variability in Colocasia (Colocasia esculenta (L.) Schott) in the low hills of Himachal Pradesh
Loading...
Date
2020-10-19
Authors
Journal Title
Journal ISSN
Volume Title
Publisher
COLLEGE OF HORTICULTURE AND FORESTRY, DR Y S P UHF, NERI, HAMIRPUR
Abstract
The present investigation entitled “Study on genetic variability in colocasia (Colocasia esculenta (L.)
Schott) in the low hills of Himachal Pradesh” was carried out at Vegetable Research Farm, Department of
Vegetable Science, College of Horticulture and Forestry, Neri, Hamirpur (HP) during summer-rainy season, 2019.
Twenty-three genotypes were evaluated in Randomized Complete Block Design with three replications to ascertain
extent of variability, heratibility, genetic advance and gain, correlation and path coefficient analysis for yield and
other horticulture traits among the genotypes. Analysis of variance showed significant differences among all the
genotypes for all the characters under study. Three genotypes namely LC-A-5-18, LC-A-16-18 and LC-A-13-18
were found to be high yielding as well as better from consumer’s point of view. They could be the promising
parents for utilization in further breeding programmes. High PCV and GCV existed for number of cormels per
plant, disease severity, tuber yield per plot, number of corms per plant, weight of cormels per plant, plant height
and width of cormels. High heritability estimates were observed for width of corms, tuber yield per plot, plant
height, weight of cormels per plant, disease severity, length of leaf lamina, dry matter percentage in tubers, width
of cormels and weight of corms per plant while, high estimates of genetic gain were observed for number of
cormels per plant, tuber yield per plot, disease severity, plant height and weight of cormels per plant. The
correlation studies at phenotypic and genotypic level revealed that tuber yield per plot had positive and significant
association with width of corms, number of cormels per plant, weight of corms per plant, weight of cormels per
plant, length of leaf lamina, number of corms per plant, width of cormels and plant height. Path analysis revealed
that width of corms, number of cormels per plant, length of leaf lamina, dry matter percentage in tubers, width of
cormels, number of corms per plant and breadth of leaf lamina had positive and direct effects on tuber yield per
plot.