ESTIMATION OF GENETIC PARAMETERS FOR YIELD TRAITS AND DISEASE RESISTANCE IN TWO AND SIX ROWED GENOTYPES OF BARLEY (Hordeum vulgare L.)
Loading...
Date
2018-07-24
Authors
Journal Title
Journal ISSN
Volume Title
Publisher
CSKHPKV, Palampur
Abstract
The present investigation entitled “Estimation of genetic parameters for yield traits and disease resistance in two and six rowed genotypes of barley (Hordeum vulgare L.)” was undertaken to assess the nature of genetic variability, association of various characters with seed yield and their direct and indirect effects for effective selection. The experimental material comprising of 31 genotypes along with four checks of barley were evaluated in Randomized Block Design with three replications over two years during Rabi, 2016-17 and Rabi, 2017-18 and data were recorded on seed yield and other yield related traits. Sufficient genetic variability was observed for all the characters in individual as well as pooled over environments. Hulled barley genotypes (HBL 795 and HBL 804) and hulless genotypes (HBL 793 and HBL 822) were found to be promising for seed yield per plant. Significance over the best check was exhibited by genotypes namely, HBL 806 for early maturity; HBL 788 and HBL 817 for spike length; HBL 787, HBL 793, HBL 795, HBL 798, HBL 802, HBL 804, HBL 811 and HBL 815 for number of grains per spike; HBL 790, HBL 813 and HBL 826 for plant height and HBL 804, HBL 812 and HBL 815 for harvest index. High heritability coupled with high genetic advance was observed for number of grains per spike, biological yield per plant and seed yield per plant which indicated the predominance of additive gene action. Association study revealed that biological yield per plant, number of grains per spike and number of tillers per plant showed significant and positive correlation with seed yield per plant. Path coefficient analysis also indicated high positive direct and indirect contributions of these traits towards seed yield per plant and further selection based on these traits would be effective for improvement in barley.
Description
Keywords
null