| 湖南省晚稻品种演变分析 |
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| 引用本文： | 吴云天,王联芳,龚平,陈本容,龚浩如,张秋标.湖南省晚稻品种演变分析[J].杂交水稻,2003,18(1):1-4. |
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| 作者姓名： | 吴云天 王联芳 龚平 陈本容 龚浩如 张秋标 |
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| 作者单位： | 1. 湖南省水稻研究所,湖南,长沙,410125
2. 澧县农业局,湖南,澧县,415500 |
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| 摘 要： | 对1981-2000年20a来湖南省晚稻品种(含杂交稻组合，下同)的演变进行了分析。湖南省晚稻品种的演变呈现出如下持点：杂交稻占主导地位，且比例不断扩大；威优系统和汕优系统构成杂交稻主体；常规稻主栽品种逐步实现优质化；品种数目不断增多，单个品种播种面积减少；超过68％的品种年播种面积低于6700hm^2。对产生这些现象的原因进行了探讨。
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| 关 键 词： | 湖南 晚稻 品种演变 特点 |
| 文章编号： | 1005-3956(2003)01-0001-04 |
| 修稿时间： | 2002年5月3日 |
Analysis on the Development of Late-season Rice Varieties in Hunan Province |
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| WU Yun tian ,WANG Lian fang ,GONG Ping ,CHEN Ben rong ,GONG Hao ru ,ZHANG Qiu biao.Analysis on the Development of Late-season Rice Varieties in Hunan Province[J].Hybrid Rice,2003,18(1):1-4. |
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| Authors: | WU Yun tian WANG Lian fang GONG Ping CHEN Ben rong GONG Hao ru ZHANG Qiu biao |
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| Institution: | WU Yun tian 1,WANG Lian fang 1,GONG Ping 1,CHEN Ben rong 2,GONG Hao ru 1,ZHANG Qiu biao 1 |
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| Abstract: | The development of late season rice varieties or hybrid combinations in Hunan Province in 20 years (1981-2000) was analyzed. It was found that the development had the distinguishing features of hybrid rice occupying dominant and ever increasing position, the hybrids derived from V20A and Zhenshan 97A being the main body of hybrid rice, conventional rice varieties being gradually replaced by good quality ones, the number of varieties increasing with plant area of a single variety decreasing, over 68% of varieties being grown under less than 6 700 hm 2 every year. These phenomena were also analyzed on their forming reasons and the further development of late season rice breeding was discussed in the paper. |
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| Keywords: | Late season rice variety development breeding Hunan |
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