| Gene flow from genetically modified herbicide-resistant rapeseed to cruciferous weeds |
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| 作者姓名： | ZHAO Xiangxiang XIA Qiuxi LU Dalei LU Weiping QI Cunkou PU Huiming LIU Geshan ZHAO Jian WANG Youping |
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| 作者单位： | 1. Jiangsu Provincial Key Laboratory of Crop Genetics and Physiology, Yangzhou University, Yangzhou 225009, China; 2. Institute of Industrial Crops, Jiangsu Academy of Agricultural Sciences, Nanjing 210014, China; 3. Jiangsu Entry-Exit Inspection and Quarantine Bureau of People’s Republic of China, Nanjing 210001, China; 4. College of Bioscience and Biotechnology, Yangzhou University, Yangzhou 225009, China |
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| 摘 要： | The sexual compatibility between genetically modified (GM) glyphosate-resistant rapeseed variety Q3 (Brassica napus L.) and 5 cruciferous weeds is studied through the observation of fluorescence microscopy and cross-fertility after manual pollination. The results indicated that Q3 (as male) was highly incompatible with Thlaspi arvense L., Capsella bursa?pastoris (L.) Medic, Cardamine hirsuta L. and Rorippa palustris (L.) Besser (as female). Fluorescence microscopic observation showed that growing of pollen tubes terminated on the stigma surface or at the upper 1/3 part of the style. However, B. juncea×Q3 was compatible, and the compatibility index was 1.65. Under the neighboring growth and natural pollination conditions, the rates of gene flow from Q3 to T. arvense, C. bursa-pastoris, C. hirsute and R. palustris were all 0, while it was 0.86% for B. juncea. These results indicate that there is difference in the rate of gene flow between GM rapeseed and cruciferous wild weeds, and frequency of gene flow is highly correlated with sexual compatibility.
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| 关 键 词： | herbicide-resistant rapeseed cruciferous weeds aniline blue fluorescence interspecific hybridization sexual compatibility gene flow. |
Gene flow from genetically modified herbicide-resistant rapeseed to cruciferous weeds |
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| ZHAO Xiangxiang,XIA Qiuxi,LU Dalei,LU Weiping,QI Cunkou,PU Huiming,LIU Geshan,ZHAO Jian,WANG Youping.Gene flow from genetically modified herbicide-resistant rapeseed to cruciferous weeds[J].Progress in Natural Science,2006,16(9):936-941. |
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| Authors: | ZHAO Xiangxiang XIA Qiuxia LU Dalei LU Weiping QI Cunkou PU Huiming LIU Geshan ZHAO Jian WANG Youping |
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| Abstract: | The sexual compatibility between genetically modified (GM) glyphosate-resistant rapeseed variety Q3 (Brassica napus L.) and 5 cruciferous weeds is studied through the observation of fluorescence microscopy and cross-fertility after manual pollination. The results indicated that Q3 (as male) was highly incompatible with Thlaspi arvense L., Capsella bursa?pastoris (L.) Medic, Cardamine hirsuta L. and Rorippa palustris (L.) Besser (as female). Fluorescence microscopic observation showed that growing of pollen tubes terminated on the stigma surface or at the upper 1/3 part of the style. However, B. juncea×Q3 was compatible, and the compatibility index was 1.65. Under the neighboring growth and natural pollination conditions, the rates of gene flow from Q3 to T. arvense, C. bursa-pastoris, C. hirsute and R. palustris were all 0, while it was 0.86% for B. juncea. These results indicate that there is difference in the rate of gene flow between GM rapeseed and cruciferous wild weeds, and frequency of gene flow is highly correlated with sexual compatibility. |
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| Keywords: | herbicide-resistant rapeseed cruciferous weeds aniline blue fluorescence interspecific hybridization sexual compatibility gene flow |
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