Genotypic Variability and Genotype by Environment Interactions in Oil and Fatty Acids in High, Intermediate and Low Oleic Acid Peanut Genotypes
S. Singkham; S. Jogloy; T. Kesmala; P. Swatsitang; P. Jaisil; N. Puppala
Type of Document:
Journal of Agricultural and Food Chemistry
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Abstract: Variability of genotype and genotype x environment (G x E) interactions for fatty acids are important to develop high-oleic types in peanut varietal improvement programs. The objectives of this study was to determine the variation in fatty acid composition among peanut genotypes and G x E interactions of fatty acids in three groups of genotypes with high, intermediate, and low-oleic acid. Twenty-one genotypes were tested in three environments consisting of two rainy seasons and one dry season. The results indicated that G x E interactions were significant for biomass, pod yield, and harvest index and also for oleic, linoleic acids, and O/L ratio. G x E interactions were less important than genotypic main effect. For oleic acid, significant interactions were found in the intermediate and low-oleic groups only. Therefore, selection for high-oleic trait in peanut breeding programs should be effective.