|Evaluation of Mass Selection by Seed Size in Bulk Soybean Populations
Two F3:4 populations, i. e. HL-1×P58 and KS8×T83-1 hybrid combinations, were evaluated for response of mass selection for seed size in soybeans. Large seeds derived lines had significantly higher seed weight (g/100-seed) than that of medium and small seeds derived lines indicated that mass selection for seed size in bulk populations was effective. Large seeds derived lines had significantly high seed yield, total dry weight of plant, and plant height than those of small seeds derived lines only found in KS8×T83-1 hybrid combination.
With similar variation of seed weight and no significant difference among correlation coefficients between seed weight and other characters of various seed size derived lines, it is suggests that direct selection for seed size (in both hybrid populations) and indirect selection for seed yield, total dry weight of plant, and plant height (only in KS8×T83-1 hybrid combination) could be available in the next cycle of selection.
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