| 低温胁迫对辣子草水浸提液化感作用的影响 |
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| 引用本文： | 马丹炜,范雪涛,葛方兰,张红.低温胁迫对辣子草水浸提液化感作用的影响[J].热带亚热带植物学报,2008,16(6):526-530. |
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| 作者姓名： | 马丹炜 范雪涛 葛方兰 张红 |
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| 作者单位： | 四川师范大学生命科学学院,成都,610066 |
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| 基金项目： | 四川师范大学校级重点项目(061k008); 成都市科技局攻关计划项目(200638)资助 |
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| 摘 要： | 采用蚕豆根尖细胞微核技术，研究了低温胁迫下辣子草（Gatinsoga parviflora Cav．）水浸提液的化感作用。结果表明：常温条件下，辣子草水浸提液使蚕豆根尖细胞有丝分裂指数下降，微核率和畸变率增大；低温处理后辣子草水浸提液对有丝分裂指数表现为“低浓度促进，高浓度抑制”效应，但显著提高了微核率和畸变率。这说明低温胁迫改变了辣子草的化感作用。
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| 关 键 词： | 辣子草 化感作用 低温胁迫 遗传毒性 |
| 收稿时间： | 2008/1/18 0:00:00 |
| 修稿时间： | 2008/7/18 0:00:00 |
The Allelopathy of Aqueous Extracts from Galinsoga parviflora Cav. under Low Temperature Stress |
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| MA Dan-wei,FAN Xue-tao,GE Fang-lan and ZHANG Hong.The Allelopathy of Aqueous Extracts from Galinsoga parviflora Cav. under Low Temperature Stress[J].Journal of Tropical and Subtropical Botany,2008,16(6):526-530. |
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| Authors: | MA Dan-wei FAN Xue-tao GE Fang-lan and ZHANG Hong |
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| Institution: | College of Life Sciences, Sichuan Normal University,Life Science College, Sichuan Normal University,Life Science College, Sichuan Normal University,Life Science College, Sichuan Normal University |
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| Abstract: | The effect of low temperature on the allelopathy of aqueous extraction from Galinsoga parvifloraCav.was studied by using micronucleus assay in Vicia fabaroot tip cells.The results showed that the mitotic index of V.fabaroot tip cells treated with the aqueous extraction decreased and micronucleus and aberration rates increased under normal temperature.However,after G.parviflorawas treated at low temperature,the mitotic index of V.fabaroot tip cells soaking in low concentration of aqueous extraction enhanced ... |
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| Keywords: | Galinsoga parvifloraCav Allelopathy Low temperature stress Genetic toxicity |
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