| 草莓根系分泌物障碍效应的模拟研究 |
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| 引用本文： | 高志华,张学英,葛会波,郑丽锦. 草莓根系分泌物障碍效应的模拟研究[J]. 植物营养与肥料学报, 2008, 14(1): 189-193. DOI: 10.11674/zwyf.2008.0131 |
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| 作者姓名： | 高志华 张学英 葛会波 郑丽锦 |
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| 作者单位： | 1.河北经贸大学生物科学与工程学院,河北石家庄 050061; |
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| 基金项目： | 河北省海河流域农业开发推广项目 , 河北农业大学校科研和教改项目 |
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| 摘 要： | 草莓是一种营养丰富、经济价值较高的水果，但连作障碍使草莓生长发育不良，产量与品质下降，而造成连作障碍的因素种类繁多，极其复杂。本文以“全明星”生根试管苗为材料，应用组织培养技术分析了根系分泌物对草莓生长的影响。结果表明，根系分泌物显著抑制了植株的生长，降低了根系活力、叶片SOD活性和叶绿素含量，而叶片中的MDA含量和细胞质膜相对透性增加，导致草莓抗病性下降。根系分泌物对草莓的不利影响随浓度的增加而增大，表明草莓根系分泌物可能是造成草莓连作障碍的一个重要原因。
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| 关 键 词： | 草莓 根系分泌物 连作障碍 组织培养 |
| 文章编号： | 1008-505X（2008）01-0189-05 |
| 收稿时间： | 2006-12-18 |
| 修稿时间： | 2007-07-06 |
Modeling the obstacle effects of strawberry root exudates |
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| GAO Zhi-hua,ZHANG Xue-ying,GE Hui-bo,ZHENG Li-jin. Modeling the obstacle effects of strawberry root exudates[J]. Plant Nutrition and Fertilizer Science, 2008, 14(1): 189-193. DOI: 10.11674/zwyf.2008.0131 |
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| Authors: | GAO Zhi-hua ZHANG Xue-ying GE Hui-bo ZHENG Li-jin |
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| Affiliation: | 1.College of Biological Science and Engineering,Hebei University of Economics and Business,Shijiazhuang 050061,China; |
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| Abstract: | Strawberry is a kind of nutritious fruit with high economic value,but the growth of strawberry was inhibited by the continuous cropping obstacle,with the yield and the quality being decreased.There were various factors resulting in continuous cropping obstacle.In this paper,the effect of root exudates(RE) on strawberry growth was analyzed using tissue culture method.Results showed that RE inhibited the growth of strawberry plant,SOD activities,chlorophyll content and root activities,increased malondialdelyole(MDA) contents and relative permeability of cell membrane in leaves of rooting plants,and decreased the resistant ability of strawberry plants to disease.The greater concentration of RE in the medium,the more significant effect it had on the plants.It is concluded that RE of strawberry was one of the important factors inducing continuous cropping obstacle in strawberry. |
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| Keywords: | strawberry roots exudates continuous cropping obstacle tissue culture |
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