YOGENDER KUMAR AND SATYAWAN ARYA
Department of Genetics and Plant Breeding,
CCS Haryana Agricultural University, Hisar-125004 (Haryana), India
*(e-mail: yogenderkgulia@gmail.com)
(Received: 10 September 2024; Accepted: 25 September 2024)
SUMMARY
The current study aimed at genetic assessment of 14 dual purpose barley genotypes for their relative performance and identification of component traits based on eleven agro-morphological characters. The experiment was conducted at CCS Haryana Agricultural University, Hisar during 2023-24 crop season under timely sown irrigated conditions. The experiment was laid in Randomized Block Design (RBD) with four replications where each genotype occupied a plot size of 6.9 m2. The results indicated highly significant differences among the genotypes with wide range for all the traits that offered score for selection of desirable types. The number of tillers per meter row, number of grains per spike, biological yield and grain yield indicated high estimates of GCV and PCV, whereas, plant height, spike length and 1000-grain weight exhibited medium; and days to heading and maturity were recorded with lower estimates of GCV and PCV. The study also revealed high heritability coupled with genetic advance for grain yield, number of tillers per meter row, number of grains per spike, biological yield, green fodder yield, 1000-grain weight and spike length. The association analysis showed significant positive correlation of grain yield with number of tillers per meter row, plant height, 1000-grain weight, biological yield, harvest index and green fodder yield. The findings of path coefficient analysis depicted positive direct effect of biological yield, harvest index, number of tillers per meter row, spike length and 1000-grain weight towards grain yield. PCA study found first four components with eigen value more than one that explained about 86.24% of the total variation. The genotypes, RD 2552, JHSBE 16, JHSBF 28 and JHSBF 21 displayed their position in first quadrant were found superior with respect to PC 1 and PC 2. Consequently, the present findings could be considered while setting the selection criterion for dual purpose barley improvement program.
Key words: Barley, biplot, dual purpose, genetic parameters, PCA