Assessment of genetic diversity of vegetable soybean [Glycine max (L.) Merrill] in R6 and R8 stages

Abstract

India is a major soybean producer, but vegetable soybean (Edamame) is cultivated in very limited areas due to a lack of variety awareness and adaptive practices. To promote growth, a targeted breeding program is crucial, but inadequate research on the genetic diversity of edamame hinders progress. The analysis of 80 advanced soybean lines derived from crosses between grain and vegetable-type germplasm lines revealed significant correlations between seed yield, seed weight, and 100-seed weight at R6 and R8 stages. Principal component analysis further supported these findings, emphasizing traits crucial for identifying genotypes with hybridization potential. Promising lines, particularly from crosses MACS-1188 × AGS-459 and JS-SH-93-05 × Swarna Vasundhara, may be very useful in developing better-adapted, high-yield edamame varieties, fostering wider acceptance and consumption.