| 不同基因型玉米自交系苗期干旱-复水的生理响应机制 |
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| 引用本文： | 鲁晓民,曹丽茹,张前进,魏昕,郭金生,王振华,张新.不同基因型玉米自交系苗期干旱-复水的生理响应机制[J].玉米科学,2018,26(2):71-80. |
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| 作者姓名： | 鲁晓民 曹丽茹 张前进 魏昕 郭金生 王振华 张新 |
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| 作者单位： | 河南省农业科学院粮食作物研究所;河南农业大学/河南粮食作物协同创新中心 |
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| 基金项目： | 国家重点研发计划“七大作物育种专项”（2016YFD0101205-4）、NSFC-河南省人才培养联合基金（U1404317） |
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| 摘 要： | 采用称重控水法模拟干旱胁迫,设对照和胁迫两个处理,在3叶期对24个玉米自交系叶片相对含水量(RWC)、游离脯氨酸(Pro)等生理指标进行测定,研究玉米的抗旱机理及复水补偿效应机制。结果表明,干旱胁迫下玉米叶片相对含水量、叶绿素荧光参数(F_v/F_m)和叶绿素含量(Chl)与对照相比显著下降,游离脯氨酸(Pro)、超氧化物歧化酶(SOD)和氧化物酶(POD)明显上升,复水后不同基因型自交系各生理指标表现出不同程度的补偿效应。利用隶属函数法将D17982、郑H71、PH4CV、昌7-2和L269等14份自交系归为抗旱性较强的自交系,PH4CV、HCL645、D17982、郑7314、郑H71和郑9712这6份自交系归为复水恢复能力强的自交系。
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| 关 键 词： | 玉米 干旱-复水 补偿效应 隶属函数法 |
| 收稿时间： | 2017/8/4 0:00:00 |
Physiological Responses Mechanism of Different Genotypes of Maize Inbred Lines to Drought and Rewatering |
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| LU Xiao-min,CAO Li-ru,ZHANG Qian-jin,WEI Xin,GUO Jin-sheng,WANG Zhen-hua and ZHANG Xin.Physiological Responses Mechanism of Different Genotypes of Maize Inbred Lines to Drought and Rewatering[J].Journal of Maize Sciences,2018,26(2):71-80. |
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| Authors: | LU Xiao-min CAO Li-ru ZHANG Qian-jin WEI Xin GUO Jin-sheng WANG Zhen-hua and ZHANG Xin |
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| Institution: | Grain Crop Research Institute, Henan Academy of Agricultural Sciences, Zhengzhou 450002,Grain Crop Research Institute, Henan Academy of Agricultural Sciences, Zhengzhou 450002;Henan Agriculture University, Collaborative Innovation Center of Henan Grain Crops, Zhengzhou 450002, China,Grain Crop Research Institute, Henan Academy of Agricultural Sciences, Zhengzhou 450002,Grain Crop Research Institute, Henan Academy of Agricultural Sciences, Zhengzhou 450002,Grain Crop Research Institute, Henan Academy of Agricultural Sciences, Zhengzhou 450002,Grain Crop Research Institute, Henan Academy of Agricultural Sciences, Zhengzhou 450002 and Grain Crop Research Institute, Henan Academy of Agricultural Sciences, Zhengzhou 450002 |
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| Abstract: | In order to study the drought resistance mechanism under drought stress condition and compensation mechanism after water recovery for maize, twenty four inbred lines of maize were treated under control and drought stress treatments at the three leaf stage by weighing, then leaf relative water content(RWC), free proline(Pro) and oth-er physiological indexes were determined. Correlation analysis results showed that, the relative water content of leaves(RWC), chlorophyll fluorescence parameter(Fv/Fm) and the content of chlorophyll were significant decreased, but free proline(Pro), superoxide dismutase(SOD), superoxide dismutase(POD) increased compared with the control under drought stress. Different genotypes of inbred lines showed various physiological indicators compensation ef-fect in different degree after rewatering. Fourteen inbred lines include D17982, H71, PH4CV, Chang7-2 and L269 were considered as strong drought resistant types, and PH4CV, HCL645, D17982, ZhengH71, Zheng7314 and Zheng9712 were classified as strong water recovery ability types using the membership function analysis. |
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| Keywords: | Maize Drought-rewatering Compensation effect Membership function analysis |
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