Differential fertility restoration behaviour of genotypes of WA, O. perennis and MS 577A cytosterile systems of rice

摘要

One hundred and thirty two rice genotypes including local as well as exotic collections, high yielding varieties and elite cultivars were test crossed with two WA cytosterile lines (IR 58025A, IR 62829A), one of O. perennis (IR 66707A) and five MS 577A cytosterile lines (Pushpa A, Mangala A, ES 18A. Intan Mutant A and Madhuri A) to identify restorers and non-restorers. The genotypes ARC 11353, IR 9761-19-IR, IR 25924-95, IR 29723-143-3-2 and IR 30864R completely restored the fertility in the two cytosterile lines of WA system. Whereas for cytosterile lines of MS 577A source, none of the genotypes showed consistency in restoring the fertility, except for the genotype IR 50360-12-1, which restored the fertility completely in the three cytosterile lines of MS 577A source. The genotypes IR 64, IR 2797-105R, IR 25924-95 and Mandya Vijaya were found to be good maintainers for the MS 577A cytosterile system.