Identification of restorers and maintainers for WA-CMS lines in rice (Oryza sativa L.)

Abstract

Thirty early to medium duration genotypes of rice were crossed with male sterile lines viz. IR-68897A, IR-68888A and IR-58250A in line x tester fashion. Out of the resultant F1s, ten restores and four maintainers were isolated for different CMS lines. The performance of pollen parents varied with the CMS lines. Based on the results, the potential restorers Jaya, Shivani, BPT-5204, Pant-12, Sarjoo-52, URG-22, URG-48, URG-51, URG-77 and URG-84, may be used for development of hybrid rice while the genotypes HUR 4-3, Jaya, URG-12 and URG-60 may be exploited through back cross breeding programme for development of new CMS lines in rice.