Effect of Seawater Stress on Physiological and Biochemical Responses of Five Jerusalem Artichoke Ecotypes

LONG Xiao-Hua; CHI Jin-He; LIU Ling; LI Qing; LIU Zhao-Pu

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Effect of Seawater Stress on Physiological and Biochemical Responses of Five Jerusalem Artichoke Ecotypes

机译：海水胁迫对五种菊芋生态型生理生化响应的影响

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Three treatments consisting of 0%,15%,and 30% seawater were investigated to analyse the ecotypic variabilities among five populations of Jerusalem artichoke (Helianthus tuberosus) regarding their responses to seawater stress under a hydroponic culture system.Analyses were done 2,4,and 6 days after treatments.The 15% and 30% seawater treatments reduced the growth rates of roots and shoots of H.tuberosus populations.The activities of superoxide dismutase,peroxidase,and catalase majored in the leaves were stimulated under the seawater stress.The electrolyte leakage and malondialdehyde contents of the leaves were also stimulated owing to seawater stress.The contents of proline and solublesugars in the leaves increased significantly with increasing seawater concentrations.The concentrations of Na+,K+,and Cl-in the aerial parts and roots increased with an increase in the seawater concentration throughout the experimental period.There were ccotypic differences among the five populations of H.tuberosus as evidenced by the analyses of the above items in both aerial parts and roots under seawater treatment.The magnitude of the ecotypic variance components indicated that a substantial proportion of the total variation for these physiological and biochemical responses were owing to ecotype,indicating the possibility of improvement through hybridization and selection.

机译：研究了三种处理方法，分别由0％，15％和30％的海水组成，以分析在水培条件下耶路撒冷洋蓟（Helianthus tuberosus）五个种群对海水胁迫的生态型变异。分析2,4处理后第6天，分别用15％和30％的海水处理降低了马铃薯块根种群根和茎的生长速率，在海水胁迫下刺激了叶片中主要的超氧化物歧化酶，过氧化物酶和过氧化氢酶的活性。海水胁迫也刺激了叶片的电解质渗漏和丙二醛含量。叶片中脯氨酸和可溶性糖的含量随海水浓度的增加而显着增加。地上部分和根系中Na +，K +和Cl-的浓度随海水的增加而增加。在整个实验期间，海水浓度增加。五个H种群之间的基因型差异。海水处理后，这些部位在气生部分和根部的分析证明了其结节。生态型方差分量的大小表明，这些生理和生化反应的总变化中很大一部分是由于生态型造成的，表明了可能性通过杂交和选择来改善。

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《土壤圈（英文版）》 |2009年第2期|208-216|共9页
作者
LONG Xiao-Hua; CHI Jin-He; LIU Ling; LI Qing; LIU Zhao-Pu;
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作者单位

College of Resources and Environmental Sciences,Nanjing Agricultural University,Nanjing 210095 China;

College of Resources and Environmental Sciences,Nanjing Agricultural University,Nanjing 210095 China;

College of Resources and Environmental Sciences,Nanjing Agricultural University,Nanjing 210095 China;

College of Resources and Environmental Sciences,Nanjing Agricultural University,Nanjing 210095 China;

College of Resources and Environmental Sciences,Nanjing Agricultural University,Nanjing 210095 China;

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收录信息中国科学引文数据库(CSCD);中国科技论文与引文数据库(CSTPCD);
原文格式 PDF
正文语种 chi
中图分类农业基础科学;
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Effect of Seawater Stress on Physiological and Biochemical Responses of Five Jerusalem Artichoke Ecotypes

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