INTERAKSI GENETIK X LINGKUNGAN DAN STABILITAS KOMPONEN HASIL BERBAGAI GENETIPE KEDELAI DI PROVINSI RIAU

Abstract

Genotype by environment (GE) interaction and stability of a trait in any crop plant such as soybean (Glycine max L Merr.) are very important for plant breeders to develop and evaluate the new cultivars as well as for farmes to plant suitable cultivars for . crop performances commercials purpose. crop performances including harvesting date, yield, components and grain yield of nine genetypes of soybean were evaluated at three locations with distinct environtments in riau. The data were used to determine GE interaction variance components of the straits and yield stability. Yhere was significant effect of location on all charactree exept on grain yield per plot. The genotypes differed significantly in all yield components and grain yield. Genotype x environtment interaction significantly affected several crop performances such as harvesting date, all yield components and grain yield. The magnitude ogf GE interaction variance components was greater than that of location for all traits except the number of seed perplants indicating that most genotypes performed differently across the locations and where not stable with respect to the locations. Among the nine genotypes line 19be and Malabar are classifired as stable genotype and could be grown in wide area of riau province, while line 13Ed and kipas putih produced high grain yield in specific area and could be only grown in pekanbaru.