| NaCl胁迫对构树种子发芽及幼苗生理生化指标的影响 |
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| 引用本文： | 吴纲,肖小君,何开跃,蒋泽平,张敏.NaCl胁迫对构树种子发芽及幼苗生理生化指标的影响[J].江苏林业科技,2009,36(4):8-12. |
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| 作者姓名： | 吴纲 肖小君 何开跃 蒋泽平 张敏 |
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| 作者单位： | 1. 江苏省林业科学研究院,江苏南京,211153
2. 南京林业大学森林资源与环境学院,江苏南京,210037 |
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| 基金项目： | "十一五"国家科技支撑项目专题"耐盐经济林木良种选育" |
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| 摘 要： | 研究了不同浓度NaCl(0,25,50,75,100,125 mmol/L)对构树种子发芽和幼苗生长及生理效应的影响.结果表明:低浓度(25 mmol/L)盐胁迫下,构树种子的发芽率比对照升高了7.7%,同时幼苗根长亦有显著增加,比对照高23%,苗高、发芽指数、活力指数虽有所下降但不显著;随着NaCl浓度的增大,构树种子的发芽率、发芽指数、活力指数均呈下降趋势,发芽后幼苗的根长、苗高、鲜质量等也呈下降趋势,幼苗生长被抑制.对幼苗的生理指标测定显示:细胞膜透性随着盐浓度的增加逐渐升高,细胞膜稳定性受到破坏;MDA含量、SOD、POD活性随盐浓度的增加呈现先升高后降低的趋势,膜透性和MDA含量与SOD活性呈极显著相关.
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| 关 键 词： | NaCl胁迫 构树种子 发芽 生理指标 |
Effects of NaCl solution stress on seed germination and seedling physiological indexes of Broussonetia papyrifera |
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| WU Gang,XIAO Xiao-Jun,HE Kai-yue,JIANG Ze-ping,ZHANG Min.Effects of NaCl solution stress on seed germination and seedling physiological indexes of Broussonetia papyrifera[J].Journal of Jiangsu Forestry Science & Technology,2009,36(4):8-12. |
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| Authors: | WU Gang XIAO Xiao-Jun HE Kai-yue JIANG Ze-ping ZHANG Min |
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| Institution: | 1.Jiangsu Academy of Forestry;Nanjing 211153;China;2.College of Forest Resources and Environment Nanjing Forestry University;Nanjing 210037;China |
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| Abstract: | The effects of NaCl stress on the seed germination and seedlings growth of Broussonetia papyrifera were studied by treating the seeds with different NaCl concentrations(0,25,50,75,100 and 125 mmol/L,respectively).Results showed that comparing to the control treatment,the germination of Broussonetia papyrifera seed under light concentration salt stress(25 mmol/L) had gone up 7.7%.Length of the root of young seedlings had increased by 23% significantly.Length of the stem,germination index and vigor index drop... |
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| Keywords: | NaCl stress Broussonetia papyrifera seed Germination Physiological indexes |
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