文献类型： 外文期刊

第一作者： Yang, ZP

作者： Yang, ZP

作者机构：

关键词： Oryza sativa; photoperiod sensitive genic male-sterile rice (PSGMR); inheritance; anther culture; pollen plant; polyploidy

期刊名称：EUPHYTICA （ 影响因子：1.895； 五年影响因子：2.181 ）

ISSN： 0014-2336

年卷期： 1997 年 94 卷 1 期

页码：

收录情况： SCI

摘要： The fertility segregations of F-1, F-2, BCF1 descended from crosses between PSGMR and japonica varieties, and F-1's anther cultured homozygous diploid pollen plant populations (H-2) were studied to reveal the genetic mechanism of photoperiod sensitive genic male sterility in PSGMR under natural daylight length at Shanghai. Rate of bagged seed-setting was used as an indicator of fertility. Fifteen F-1 showed complete fertility similar to their parents. The ratio of completely sterile plants to fertile plants in fifteen F-2 and four BCF1 was 1:15 and 1:3, respectively. The ratio of completely sterile to fertile diploid pollen plants in nine diploid populations (H-2) was 1:3. These results demonstrated that the photoperiod sensitive genic male sterility in PSGMR was governed by two pairs of independent major recessive genes. There were no significant fertility segregations in hybrids F-1 and selfed F-2 between Nongken 58S and its derivatives 7001S, 5088S, 5047S and M105-9S, indicating that the photoperiod sensitive genic male-sterile genes in Nongken 588 were allelic to those in its derivatives. Several photoperiod sensitive genic male-sterile diploid pollen lines were bred from anther cultured homozygous diploid populations (H-2) in about a three-year period. Most of these diploid lines showed significant fertility transformation and stable complete sterility from 5 August to 5 September, excellent agronomic traits and high resistance to blast and bacterial leaf blight.

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