| 谷子抗除草剂基因从栽培种向其近缘野生种漂移的研究 |
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| 引用本文： | 王天宇,赵治海,闫洪波,黎裕,朱学海,石云素,宋燕春,马峙英,H.Darmency.谷子抗除草剂基因从栽培种向其近缘野生种漂移的研究[J].作物学报,2001,27(6):681-687. |
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| 作者姓名： | 王天宇 赵治海 闫洪波 黎裕 朱学海 石云素 宋燕春 马峙英 H.Darmency |
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| 作者单位： | 中国农业科学院作物品种资源研究所，北京 100081 |
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| 基金项目： | 本项研究得到欧盟项目(ERBIC18 CT98 0391)和河北省自然科学基金项目资助. |
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| 摘 要： | 作物同种及栽培种与近缘野生种之间的基因漂移(基因流)是防范作物品种生物学混杂及评估转基因新种质田间释放后所产生的生态学效应的重要基础参数.本研究以显性抗除草剂(拿捕净)谷子种质作为花粉供体材料,以青狗尾草作为花粉受体材料进行了栽培种向其主要近缘野生种基因漂移的检测研究.研究结果表明,尽管一般认为谷子及其近缘
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| 关 键 词： | 谷子 青狗尾草 抗除草剂 基因流 安全性评估 |
| 收稿时间： | 2001-03-27 |
| 修稿时间： | 2001年3月27日 |
Gene Flow from Cultivated Herbicide-resistant Foxtail Millet to its Wild Relati ves: a Basis for Risk Assessment of the Release of Transgenic Millet |
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| WANG Tian Yu ZHAO Zhi Hai YAN Hong Bo , LI Yu ZHU Xue H ai SHI Yun Su SONG Yan Cun MA Zhi Ying H Darmency.Gene Flow from Cultivated Herbicide-resistant Foxtail Millet to its Wild Relati ves: a Basis for Risk Assessment of the Release of Transgenic Millet[J].Acta Agronomica Sinica,2001,27(6):681-687. |
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| Authors: | WANG Tian Yu ZHAO Zhi Hai YAN Hong Bo LI Yu ZHU Xue H ai SHI Yun Su SONG Yan Cun MA Zhi Ying H Darmency |
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| Institution: | WANG Tian Yu 1 ZHAO Zhi Hai 2 YAN Hong Bo 1,3 LI Yu 1 ZHU Xue H ai 2 SHI Yun Su 1 SONG Yan Cun 1 MA Zhi Ying 3 H Darmency 4 |
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| Abstract: | Gene flow within cultivated ( cv) populations, and between cv and its w ild relatives is a key issue of the bio contamination and the potential risk of the use of transgenic crops. The test of gene flow between cultivated population of foxtail millet ( Sataria italica) and its wild relative, green foxtail (S.viridis) was carried out in the field, using a dominant setho xydim resistant lin e as a pollen donor and a population of green foxtail as a recipient. The results showed that although it is well known that two species are autogamous, the polle n from a 10 m diameter plot could fertilize the green foxtail up to 60 m. The hi ghest frequency of gene flow was at 0.03 m, reached 1.14 % in average. The frequ ency decreased with distance increase. A sharp decrease of the frequency took pl ace within 0.5 m from pollen donor plant. Generally, the frequency of gene flow became 0 at 20 m, but it was possible that pollens dispersed from pollen donor s ources up to 60 m in some cases. The wind direction is the major climate factor influencing the frequency of gene flow. There was two times difference in freque ncy under two contrasting directions of wind. |
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| Keywords: | Foxtail millet Green foxtail Herbicide re sistance Gene flow Safety assessment |
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