Marker-trait association for yield and its components in North East Indian Rice Landraces

Abstract

The North-East India was rich in rice landraces cultivated by different tribes based on cultural significance. The present study focused on genetic variability and marker-trait association analysis in 52 north east Indian rice landraces for yield and yield related traits. The investigation was carried out during Kharif-2021 at the Agricultural Research Station (ARS), Bapatla of Acharya N. G. Ranga Agricultural University. Analysis of variance revelated significant (P<0.05) different observed among the genotypes for yield traits. 136 SSR markers used for genotyping in current study and these are revealed 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. Genotypes grouped into three sub population by population structure analysis. The Marker trait association analyses revealed 11 markers were significant association with yield traits and explain the variation (R²) range from 1.75% to 11.93%.