Genotypic variability and genotype by environment interactions in oil and fatty acids in high, intermediate, and low oleic acid peanut genotypes.
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 objective 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.
Singkham
Nattawut
N
Department of Plant Science and Agricultural Resources, Faculty of Agriculture, Khon Kaen University, Khon Kaen 40002, Thailand.
Jogloy
Sanun
S
Kesmala
Thawan
T
Swatsitang
Prasan
P
Jaisil
Prasit
P
Puppala
Naveen
N
D010367:Arachis / Q000737:chemistry / Q000235:genetics* / Q000254:growth & development; D001947:Breeding; D004777:Environment; D005227:Fatty Acids / Q000032:analysis*; D014644:Genetic Variation; D005838:Genotype; D019301:Oleic Acid / Q000032:analysis*; D000074241:Peanut Oil; D010938:Plant Oils / Q000032:analysis* / Q000737:chemistry; D012621:Seasons
D005227:Fatty Acids; D000074241:Peanut Oil; D010938:Plant Oils; D019301:Oleic Acid