Abstract
The present investigation was conducted to determine the associations among various morphological, physiological, and biochemical traits and their influence on sowing seed quality in soybean (Glycine max L.). The study was carried out at the Agricultural Farm of the Faculty of Agriculture, Rabindranath Tagore University, Raisen (M.P.), during the Kharif seasons of 2021–22 and 2022–23, using 50 genotypes obtained from AICRP on Soybean, JNKVV, Jabalpur. A randomized complete block design with three replications was employed. Statistical analyses, including analysis of variance and correlation coefficients at genotypic and phenotypic levels, revealed significant variability among traits. The results indicated that seed yield per plant had significant and positive associations with number of pods per plant (0.839), plant height (0.713), germination percentage (0.591), seed vigor index-II (0.580), and 100 seed weight (0.425), suggesting these as key indicators for enhancing seed yield and quality. On the contrary, electrical conductivity exhibited strong negative associations with germination (-0.743), seed vigor (-0.703), and plant height (-0.565), reflecting its role as an indicator of seed deterioration. Traits such as swelling coefficient, hull percentage, and hydration coefficient were also negatively associated with seed quality. Positive correlations among germination, seedling length, dry matter content, and seed volume emphasized their reliability as physiological markers of seed quality. The findings highlight the importance of integrating agronomic and physiological parameters in soybean breeding programs to develop high-yielding, robust genotypes with superior seed quality suitable for storage and tropical field conditions.