Vol. 11, Issue 3 (2022)

Author(s):
Biswajit Sahoo, Sunil Kumar Nair, Debarchana Jena, Diptibala Rout, Vineeta Singh, P Arsode, Amrita Giri, Sadhna Saha, Anushree Pramanik, DK Rana, JL Katara, SD Mohapatra, Sanghamitra Samantaray and Ramlakhan Verma

Abstract:
Extent of genetic diversity among parents is very crucial for planning research strategies in crop plants. This study is pertaining to the trait development of brown plant hopper (BPH) resistance in popular rice hybrid Rajalaxmi. Parents of Rajalaxmi along with donors (CRMS32B, IR42266-29-3R, CR 2711-76, Dhobanumberi) and 15 NIL derivatives were taken for diversity analysis. Total 48 hyper-variable STMS markers were used to assess the genetic diversity among recurrent parents (CRMS32B, IR 42266-29-3R) and donors (CR 2711-76 and Dhobanumberi). Jaccard’s similarity coefficient value was found to be ranged from 0.56 to 0.82 indicates substantial genetic distance among the genotypes. Clustering patterns showed a clear-cut distinction among 4 parental genotypes which categorized into major and minor groups. Besides, results of genetic similarity among parents and NILs which was estimated utilizing 70 SSR markers was ranged 0.71 to 0.91. Results of this study reflects the utility of donor parents for enhancing BPH resistance and yield consistency in rice hybrid Rajalaxmi.