Department of Genetics and Plant Breeding, Narendra Deva University of Agriculture & Technology, Kumarganj, Faizabad
*Present address- Deptt. of Genetics and Plant Breeding, Institute of Agricultural Sciences, BHU, Varanasi 221005.
Field experiment comprised of forty rice hybrids derived from two CMS lines (IR 58025 A and NMS 4 A) and twenty testers following L×T mating design, were conducted during wet season 2006 under saline-alkali soil [pH = 9.65, EC (dSm−1) = 2.21, OC = 0.20%] at Genetics and Plant Breeding Research Farm of N.D.U.A. & T., Kumarganj, Faizabad. Out of twenty rice genotypes screened for their restoration ability, the eight pollen parents viz., IR 61920-3B-22-2-1, IR 70023-4B-R-12-3-1-1-B, NDRK 5095, NDRK 5086, NDRK 5013, CSRC(S) 14-1-4-0, 22-2-B-2-1-1 and 92-H 51-4 were found as partial restorers for both the CMS lines. Six pollen parents viz., NDRK 5056, NDR 9830119, CST 7–1, 21-2-5-B-1-1, IR 64, and PNL 5-8-1-7-21 were found as partial restorers to only for NMS 4 A and same testers were found restorers for IR 58025 A. Out of 20 pollen parent, only six viz., PNL 1-8-5-17-2, NDR 9830148, IR 72048-B-R-2-2-2-1-B, IR 71829-3R-73-1-2-B, NDRK 5094 and Narendra Usar 3 were found as complete restorer to both the CMS lines. These parents are suggested for recombination breeding to obtain desirable/better segregants with high grain yield and wide compatible genes which enhance the rapid hybrid rice seed production for saline-alkali rice growing ecosystem.
rice, cytoplasmic male sterility, pollen viability, spikelet fertility, fertility restoration
