Assessment of genetic variability in oat (Avena sativa L.) germplasm using agro-morphological traits and microsatellite markers

DOI: 10.37992/2024.1504.097

  • Parameshwaran Mathavaraj,
  • Prasanta Kumar Goswami,
  • Seuji Bora Neog,
  • and Akhil Ranjan Baruah

Abstract

This study assessed genetic variability among oat genotypes for twelve traits, including yield. Significant differences were found across all traits, with high heritability and genetic advance for the number of effective tillers, 1000-seed weight, and grain yield. Hierarchical clustering using morphometric traits grouped the genotypes into four distinct clusters. We identified 665 potential microsatellites using 1000 contigs from NCBI and designed possible primer pairs to develop PCR-based markers in orphan crop like oats. Validation with a panel of 31 diverse genotypes revealed that seven of ten newly developed markers detected expected alleles, with four being polymorphic. Additionally, eight reported SSRs were used to assess genotypic differences. The markers showed a mean allele richness of 2.86 (range: 2-4) and a mean polymorphism information content (PIC) of 0.37 (range: 0.15-0.96). Cluster analysis indicated three distinct clusters with a mean dissimilarity of 0.54, demonstrating the markers' effectiveness for genetic diversity assessment and breeding.

Keywords: Oats, heritability, GCV, PCV, microsatellites, molecular diversity.

Published
06-01-2025
How to Cite
Parameshwaran Mathavaraj, Prasanta Kumar Goswami, Seuji Bora Neog, and Akhil Ranjan Baruah

Assessment of genetic variability in oat Avena sativa L. germplasm using agro-morphological traits and microsatellite markers

. 2025. Electronic Journal of Plant Breeding, 15 4, 820-831. Retrieved from https://ejplantbreeding.org/index.php/EJPB/article/view/5176
Issue
Vol 15 No 4 (2024): EJPB
Section
Research Article

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