BS DiltaBHAVNA RAJKUMARI2024-06-212024-06-212024-03-04https://krishikosh.egranth.ac.in/handle/1/5810210745The investigation titled, "Evaluation of barley germplasm for growth, seed yield and seed quality attributes in the mid hills of HP" was carried out at Research Farm and Laboratory of the Department of Seed Science and Technology, Dr YS Parmar University of Horticulture and Forestry, Nauni, Solan (HP) during 2021-22 and 2022-23. It involved analyzing variations among 65 barley genotypes which included various attributes such as plant height, number of tillers per plant, number of spikes per plant, spike length, awn length, seeds or grains per spike days to heading, days to maturity, seed weight per plot, seed weight per plant, seed weight per hectare, growth habit, presence of awns, hullness of seeds, seed germination percentage, seedling length, seedling dry weight, seedling vigour index I, seedling vigour index II, seed moisture content, test weight, total starch content, total phenol content, crude protein content, β-glucans content, and seed weight. The results showed that all the attributes under investigation showed significance for variation among the barley genotypes. The genotypic coefficient of variation was higher than the phenotypic coefficient of variation, with minimal differences between the two. The seed weight per plot, seed weight per plant, and seed weight per hectare showed high genotypic and phenotypic coefficients of variation. Spike length indicated low phenotypic coefficient of variation (12.61%) and moderate genotypic coefficient of variation (19.99%). Awn length, days to heading, days to maturity, germination percentage, seedling length, seedling dry weight, seedling vigour index I, seedling vigour index II, seed moisture content, crude protein content, β-glucans content, and total starch content all exhibited low phenotypic and genotypic coefficients of variation, respectively. Moderate heritability with high genetic gain was displayed by seed weight, while high heritability with moderate genetic gain was displayed by plant height, number of tillers per plant, number of spikes per plant, grains per spike, seedling length, seedling dry weight, seedling vigour indices I & II, test weight, total starch content and β-glucans content. The genotypic correlation coefficients for nearly all features surpassed the corresponding phenotypic correlation coefficients. The maximum direct positive effect on seed weight was imposed by seedling length (3.072) followed by seedling vigour index II (2.218), number of tillers per plant (0.166), germination percentage (0.148), awn length (0.147), crude protein content (0.142), β-glucans content (0.103), spike length (0.082) and grains per spike (0.037).Seven distinct clusters were identified during cluster analysis using Mahalanobis D2 distance, with maximum intra-cluster distance measured in cluster 1 (255.32), followed by cluster 3 (226.68), cluster 4 (203.31), cluster 6 (183.69), cluster 7 (181.16), cluster 2 (96.05) and cluster 5 (93.68). All in all, thirteen barley genotypes exhibited the best results with regards to the growth, seed yield and quality parameters.EnglishThesis