Genetic diversity analysis of North-East Indian rice landraces: Anintegrated morphological and molecular perspective

Genetic diversity analysis in NE rice landraces

Abstract

The research aims to address the insufficiency of studies on grain yield and yield traits of North East Indian rice landraces. Focusing on genetic diversity through integrated morphological and molecular analysis, the goal is to identify and preserve diverse rice varieties. It aims to conserve ideal parental genotypes and expand the genetic foundation to meet food demand. The investigation was carried out during Kharif-2021 season, fifty-two rice accessions were evaluated for nine yield traits in randomized complete block design with five replications at the Agricultural Research Station (ARS), Bapatla of Acharya N G Ranga Agricultural University. D2 analysis, revealed high genetic diversity present among the genotypes and grouped them into six clusters using yield traits. Clusters I, II, III and VI comprised 26, 16, 6 and 2 rice genotypes, respectively. The test weight played high role in the total genetic divergence (83.71%). The genetic diversity (GD) ranged from 0.0000 to 0.7301, with an average of 0.4909. While the polymorphic information content (PIC) ranged was from 0.00 to 0.68, with an average of 0.42. The number of alleles identified ranged from 1.00 to 5.00, with an average of 3.05 alleles per marker.