ESTIMATION OF GENETIC PARAMETERS AND CHARACTER ASSOCIATION IN BARLEY (HORDEUM VULGARE L.) UNDER IRRIGATED CONDITION
YOGENDER KUMAR*, NAVEEN KUMAR, O. P. BISHNOI AND SUMAN DEVI
Wheat and Barley Section
Department of Genetics & Plant Breeding
CCS Haryana Agricultural University, Hisar-125004 (Haryana), India
(e-mail : yogenderkgulia@gmail.com)
(Received : 12 May 2018; Accepted : 20 June 2018)
SUMMARY
The present investigation was carried out at Barley Research Area of the Department of Genetics & Plant Breeding, CCS Haryana Agricultural University, Hisar during rabi 2016-17 to study the genetic parameters and character association for 10 quantitative traits in 87 barley genotypes. Significant genotypic differences were observed for all the traits studied indicating considerable amount of variation among material evaluated for each trait. Most of the traits under investigation exhibited wide range except for days to heading and maturity. Phenotypic and genotypic coefficients of variation were highest in number of grains per spike followed by grain yield, harvest index, number of tillers per meter row and 1000grain weight. Estimates of heritability ranged from 61.2 per cent for harvest index to 95.5 per cent for number of grains per spike, while grain yield showed 79 per cent heritability. High heritability coupled with high genetic advance was observed for number of grains per spike, number of tillers per meter row, grain yield, 1000-grain weight and biological yield, indicates the importance of these traits in selection and crop improvement. The genotypic correlation estimates showed significant positive association of grain yield with harvest index, biological yield and number of grains per spike while the characters viz., days to heading and maturity, plant height and ear length exhibited significant negative correlation with grain yield. Harvest index and biological yield exerted the highest positive and significant direct effect on grain yield. Therefore, these characters could be considered as main components for selection in a breeding program for higher grain yield.
Key words:Genetic parameters, correlation coefficient, path analysis, barley