| 光敏核不育水稻在热带稻区的育性转换特性与利用研究 |
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| 引用本文： | 张自国,杨静.光敏核不育水稻在热带稻区的育性转换特性与利用研究[J].作物学报,1995,21(4):485-491. |
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| 作者姓名： | 张自国 杨静 |
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| 作者单位： | 华中农业大学，湖北武汉，430070 |
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| 基金项目： | 国家自然科学基金“863”资助项目 |
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| 摘 要： | 选用来自全国不同育种单位的各种类型光温敏核不育水稻材料，在海南省进行周年播种，对育性转换进行观测。试验表明，育性转换不同光温反应类型的品系在海南的育性转换存在很大差异，而同类不育系则表现了相同的转换趋势，其中育性转换可育上限温度高的高一低高型不育系在海南有明显的育性转换。由此，作者提出，低一低型和低一高型不育系在海南可以作为不育系用于水稻杂处优势利用，低一低型不育系可以考虑在海南繁殖，在海南冬繁时
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| 关 键 词： | 光敏雄性不育性 热带稻区 育性转换 繁殖 水稻 |
| 收稿时间： | 1993-06-28 |
Studies on the Exploitation and Fertility Alteration of Photoperiod Sensitive Male Sterile Rice in the Tropics |
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| Zhang Ziguo Yang Jing,Yuan Shengchao Zeng Hailai Zhang Duanpin.Studies on the Exploitation and Fertility Alteration of Photoperiod Sensitive Male Sterile Rice in the Tropics[J].Acta Agronomica Sinica,1995,21(4):485-491. |
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| Authors: | Zhang Ziguo Yang Jing Yuan Shengchao Zeng Hailai Zhang Duanpin |
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| Institution: | Huazhong Agricultural University,Wuhan 430070 |
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| Abstract: | Using 12 photoperiod sensitive male sterile (PGMS) lines, which were bred from different institute, the exploitation and fertility alteration of PGMS were studied by sowing at a month interval in a whole year in Lingshui County, Hainan provinee which is a tropical rice region. The results indicated that, in tropics, the expression of fertility alteration among PGMS lines are quite different. Lines belonging in the same ecotype had a similar fertility pattern, the low-low type and low-high type lines could transfer their pollen fertility from fertile to completely sterile among seasons. They can be used as sterile lines for hybrid seed production and as fertile lines for propagating themselves in tropics. The ideal ecotype in tropics is different from the ideal types in subtropics. High-low type and high-high type had no completely sterile period. Accord-ing to that, breeders can select plants with higher critical fertile temperature, whick is one of the two essential characters of a ideal PGMS line in the subtropics, during the winter propagation in Hainan provinee. |
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| Keywords: | Photoperiod sensitive male sterility (PGMS) Tropical rice region Fertility al-teration Propagation of sterile line Selecting and breeding |
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