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石明松发现光敏核不育水稻,开辟了杂交稻研究的新篇章.两系法杂交稻的发展依赖于新的遗传工具,即光敏核不育水稻(PGMR)和温出核不育水稻(TGMR)。研究表明,农垦58S系统的不育系不存在绝对的光敏不育性或绝对的温敏不育性,其育性转换都是受光温共同作用的结果.到目前为止,已育成了一批两系法品种间杂交稻组合.使型组合有NAN7S/Rg-1、N5088S/R183、N5088/R187、31301S/1514、7001S/轮回422、700ls/1514等.这些组合已在长江流域的双季稻区作晚稻种植了6000多hm2,一般产量为6.75~7.50t/hm2,比同生育期的常规粳稻品种鄂晚5号和鄂宜105等增产10%~15%,与同生育期的三系杂交籼稻汕优64等产量持平.此外,具更强优势的亚种间杂交稻组合也已初步选出。
Shi Ming-song found photosensitive nuclear-sterile rice, opened up a new chapter in hybrid rice research. The development of two-line hybrid rice relies on new genetic tools, namely photo-sensitive genic male sterile rice (PGMR) and thermo-grafted nuclear sterile rice (TGMR). The results showed that there were no absolute photosensitive or absolute thermo-sensitive sterile in Nongken 58S CMS, and fertility conversion was the result of light and temperature interaction. So far, a number of hybrid rice combinations have been bred. The combination of type NAN7S / Rg-1, N5088S / R183, N5088 / R187, 31301S / 1514,7001S / reincarnation 422,700 ls / 1514 and so on. These combinations have planted more than 6,000 hm2 of late rice in the double cropping paddy in the Yangtze River valley with a typical yield of 6.75-7.50 t / hm2, which is higher than that of conventional late rice varieties E’5 and E’e 105 at the same growing stage 10% -15%, which is consistent with the yield of the three-line indica hybrid rice Shanyou 64 with the same growth period. In addition, a more dominant subspecific hybrid rice combination has also been initially selected.