| 杂交稻自生苗中类似杂草稻的生物学特性 |
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| 引用本文： | 曹迎杰,张建萍,陈丽娟,余柳青.杂交稻自生苗中类似杂草稻的生物学特性[J].杂草科学,2013(3):44-47. |
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| 作者姓名： | 曹迎杰 张建萍 陈丽娟 余柳青 |
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| 作者单位： | [1]云南农业大学农学与生物技术学院,云南昆明650201;中国水稻研究所/水稻生物学国家重点实验室浙江杭州310006 [2]中国水稻研究所/水稻生物学国家重点实验室,浙江杭州310006 |
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| 基金项目： | 国家自然科学基金（编号：30860057）;中央级公益性科研院所专项基金（编号：100012）;中央级公益性科研院所基本科研业务费专项资金（编号：2012RG003-2）. |
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| 摘 要： | 在自然条件下,种植不同时间籼型杂交稻后改种常规粳稻,对粳稻田中的杂交稻自生苗展开调查,分析杂交稻自生苗中出现类似杂草稻的频率及其生物学性状,测定杂交稻自生苗对粳稻产量的影响.结果表明,在粳稻田中籼型杂交稻自生苗可以转变成类似杂草稻,即存在籼粳亚种间异交产生杂草稻的可能;连续种植杂交稻3年后改种常规粳稻田块的杂交稻自生苗密度最高,对常规粳稻产量的影响最大.
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| 关 键 词： | 籼型杂交稻 自生苗 类似杂草稻 粳稻 |
Biological Characteristics of Seedlings Similar to Weedy Rice from Spontaneous Seedlings of Hybrid Rice |
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| CAO Ying-jie,ZHANG Jian-ping,CHEN Li-juan,YU Liu-qing.Biological Characteristics of Seedlings Similar to Weedy Rice from Spontaneous Seedlings of Hybrid Rice[J].Weed Science,2013(3):44-47. |
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| Authors: | CAO Ying-jie ZHANG Jian-ping CHEN Li-juan YU Liu-qing |
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| Institution: | 1.College of Agronomy and Biotechnology, Yunnan Agricultural University, Kunming 650201, China ; China National Rice Research Institute/State Key Laboratory of Rice Biology, Hangzhou 310006, China;) |
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| Abstract: | The objectives of this study were to investigate the frequency and biological characteristics of seedlings similar to weedy rice recruited as spontaneous seedlings of hybrid rice and the influence of spontaneous seedlings of hybrid rice on the yield of japonica rice,under the conditions of planting conventional japonica rice after planting indica hybrid rice for several years.Spontaneous seedlings of indica hybrid rice developed as weedy rice mimics in japonica rice fields.The outcrossing of indica and japonica might produce weedy rice.The highest density of spontaneous seedlings of hybrid rice were found in fields with continuous cultivation of hybrid rice for three years before turning into planting conventional japonica rice,and decreased the yield of conventional japonica rice significantly. |
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| Keywords: | indica hybrid rice spontaneous seedlings weedy rice conventional japonica rice |
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