Genetic Parameters Estimation of High Yielding and Large Seed Size of Soybean [Glycine max (L.) Merrill] Genotypes

Background: Seed yield and seed size are agronomic traits needed by farmers and consumers. The objective of the study was to assess the potential yield and seed size of soybean promising lines. Methods: The field trials were conducted in two locations (Malang and Ngawi), East Java, Indonesia during dry season of 2018. Thirty soybean lines and two check cultivars (Anjasmoro and Dega 1) were set in a randomized completely block design, replicated three times. Result: The study showed that there were differences in genotypic variance of soybean between Ngawi and Malang locations on plant height, filled pods number/plant, maturity days and seed weight/plant. Maturity days and 100 seeds weight showed similar heritability values in both locations. In Malang, the value of expected genetic advance was less than that in Ngawi, suggested that Ngawi is better location for soybean selection for high yield potenstial and large seed size (100-seed weight). The soybean lines G 5 (Anjasmoro ☓ MD6)-11 and G 21 (Grob ☓ Argopuro) ☓ (Pangrango)-41-10 have the highest seed yield of 3.03 and 3.07 t/ha, respectively, which is significantly higher than the check variety Anjasmoro (2.30 t/ha). G 21 also has larger 100-seed weight than the check variety Anjasmoro.