Diversity assessment of groundnut genotypes for pod and kernel traits through multivariate analysis
Fifty-five groundnut genotypes from various sources were studied for their diversity. Eleven traits of pod and kernel viz., 100-pod weight, pod length, pod width, 100-kernel weight, kernel length, kernel width, oil content, oleic acid content, linoleic acid content, palmitic and stearic acid content were recorded. The coefficient of variation ranged from 22.40% for linoleic acid content to 6.38% for oil content. The principal component analysis was done to examine the variation. The first four principal components explained about 78.37 % of the total variability. Cluster analysis grouped 55 genotypes into nine clusters. The cluster distance among genotypes ranged from 11.18 to 1.16. All these genotypes were also profiled for allele specific marker for ahFAD2A and ahFAD2B mutation for high oleic acid trait. The molecular analysis revealed that genotypes Girnar 4, NRCGHFS72, ICGV191020, ICGV191027 and ICGV191035 were found to have both ahFAD2A and ahFAD2B mutation with high oleic acid content.
Keywords: Groundnut, Principal Component Analysis, Cluster analysis, high oleic acid, Allele-specific marker.
Diversity assessment of groundnut genotypes for pod and kernel traits through multivariate analysis. 2023. Electronic Journal of Plant Breeding, 14 3, 902-911. Retrieved from https://www.ejplantbreeding.org/index.php/EJPB/article/view/4839
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