| 干旱胁迫对苗期甘蔗叶片水分和叶绿素荧光参数的影响 |
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| 引用本文： | 朱理环,邢永秀,杨丽涛,李杨瑞,杨荣仲,莫磊兴.干旱胁迫对苗期甘蔗叶片水分和叶绿素荧光参数的影响[J].农业科学与技术,2010(5). |
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| 作者姓名： | 朱理环 邢永秀 杨丽涛 李杨瑞 杨荣仲 莫磊兴 |
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| 作者单位： | 朱理环(广西大学农学院,广西南宁,530005;农业部甘蔗品质监督检验测试中心(南宁),广西南宁,530007);邢永秀,杨丽涛(广西大学农学院,广西南宁,530005;农业部甘蔗品质监督检验测试中心(南宁),广西南宁,30007;广西大学广西亚热带生物资源保护利用重点实验室,广西南宁,530005);李杨瑞(农业部甘蔗品质监督检验测试中心(南宁),广西南宁,530007;广西大学广西亚热带生物资源保护利用重点实验室,广西南宁,30005;广西作物遗传改良生物技术重点实验室,广西南宁,530007);杨荣仲,莫磊兴(农业部甘蔗品质监督检验测试中心(南宁),广西南宁,530007) |
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| 基金项目： | 国家科技支撑计划项目，广西攻关项目，研究生科研创新项目(105930903049).Supported by Key Projects in the National Science & Technology Pillar Program，Key Project of Science and Technology Department of Guangxi Province of China，the Program for Postgraduates Research Innovattion in GX.University |
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| 摘 要： | 目的]研究干旱胁迫对甘蔗叶片水分和叶绿素荧光参数的影响,为甘蔗生产及评价研究提供依据.方法]选取7个抗旱性不同的甘蔗品种,在苗期进行干旱胁迫,并测定胁迫条件下甘蔗叶片水分含量和叶绿素荧光参数的变化.结果]甘蔗叶片水势和相对含水量与土壤相对含水量存在一定的内在联系,耐旱强的品种对土壤水分的利用率较高;相关分析和因子分析表明茁期干旱存活率、Fc/Fm、叶片水势和相对含水量可被用作抗旱性评价指标.结论]水势表现为一个相对独立的影响因子,对甘蔗抗早性有支配作用,并验证了Fv/Fm作为甘蔗抗旱评价指标的可靠性.
Abstract：
Objective] The aim was to explore the effects of water stress on leaf water and chlorophyll fluorescence parameters of sugarcane seedling,as well as to provide basis for the study on sugarcane production and evaluation.Method]Seven different sugarcane varieties were studied at the seedling stage under drought stress,and the changes of leaf water and chlorophyll fluorescence parameters under stress conditions were detected. Result] leaf water potential,leaf relative water content and soil relative water content showed a certain amount of internal relationship,the sugarcane varieties that had more tolerant to drought had higher utilization rate of soil water;the correlation analysis and factor analysis suggested that the survival rate at seedling stage under drought stress,Fv/Fm,leaf water potential and relative water content could be used as drought resistance evaluation indicators. Conclusion] As a relatively independent influencing factor,water potential had dominating effect on drought resistance,and the reliability of Fv/Fm as drought resistance evaluation indicator had been verified.
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| 关 键 词： | 干旱胁迫 苗期 甘蔗 叶片水势 水分 叶绿素荧光参数 Chlorophyll Fluorescence relative water content drought resistance chlorophyll fluorescence water potential resistance evaluation 土壤相对含水量 seedling stage drought stress correlation analysis influencing factor 评价指标 factor analysis survival rate |
Effects of Water Stress on Leaf Water and Chlorophyll Fluorescence Parameters of Sugarcane Seedling |
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| Abstract: | Sugarcane Drought stress Leaf water Leaf relative water content Fv/Fm |
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| Keywords: | Fv/Fm |
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