GENETIC-STUDIES OF SPECIATION IN CULTIVATED RICE .3. A NEW GENE CONTROLLING STERILITY IN F1 HYBRIDS OF 2 CULTIVATED RICE SPECIES - ITS ASSOCIATION WITH PHOTOPERIOD SENSITIVITY
GENETIC-STUDIES OF SPECIATION IN CULTIVATED RICE .3. A NEW GENE CONTROLLING STERILITY IN F1 HYBRIDS OF 2 CULTIVATED RICE SPECIES - ITS ASSOCIATION WITH PHOTOPERIOD SENSITIVITY
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DOI：
10.1093/oxfordjournals.jhered.a109832
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发表时间：
1983-01-01
影响因子：
3.1
通讯作者：
SANO, Y
中科院分区：
文献类型：
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作者：
SANO, Y
两种栽培水稻（Oryza sativa L.）和O. glaberrima Steud.)的种间F1杂交。雄性不育，雌性可生育。为了提取和鉴定F1花粉不育性的因素，进行了回交试验。台中65和W025的亲本分别为Sa3/Sa3和S3/S3。S3位点对纯合子的小孢子发育无影响，但对杂合子S3/Sa3的不携带花粉的败育有诱导作用。S3对大孢子和体细胞似乎没有不良影响，这与先前报道的S1和S2等位基因的基因作用不同。在第9染色体上，Sa3位点与la（懒惰习惯）紧密相连。与S3纯合子相比，S3纯合子在夏季的抽穗期比S3/Sa3或Sa3/Sa3纯合子晚10 d左右。本文讨论了水稻配子体型中常见的不育基因及其来源。
The interspecific F1 hybrid between the two cultivated rice species, Oryza sativa L. and O. glaberrima Steud., is male sterile but female fertile. To extract and examine elements causing F1 pollen sterility, a backcross experiment was carried out. The O. sativa (Taichung 65) and O. glaberrima (W025) parents were considered to be Sa3/Sa3 and S3/S3, respectively. The S3 locus had no deleterious effect on the development of microspores in the homozygote but induced abortion of pollen not carrying it in the heterozygote S3/Sa3. There appears to be no adverse effect of S3 on megaspores or somatic cells, which differs in genic action from the S1 and S2 alleles reported previously. The Sa3 locus was tightly linked with la (lazy habit) on chromosome 9. In addition, plants homozygous for S3 proved to be photoperiod sensitive and showed the heading date about 10 days later than those having S3/Sa3 or Sa3/Sa3 in the summer seasons. Frequently observed sterility genes of gametophytic type in rice are discussed in relation to their origin.