Identification of fertility restorers for Gossypium harknessii based cytoplasmic male sterility system in cotton (Gossypium hirsutum L.).

摘要

An experiment was conducted on CMS lines crossed to Gossypium hirsutum male parents CIR 15, CIR 23, CIR 39, CIR 47, CIR 51, CIR 54, CIR 56, CIR 58 and CIR 70 to identify the restorer lines. Out of the CMS hybrids, 25 (39.7%) were fertile as CIR 23 and CIR 70 restored fertility in 14 F1s, and CIR 15 could restore the fertility for 6 CMS and CIR 47 for 5 CMS lines. CIR 23 and CIR 70 acted as fertility restorer for all the 7 CMS lines. The restorer lines CIR 23 and CIR 70 identified from the present study should permit the commercial production of completely fertile F1 cotton hybrids..