| 盐胁迫对油菜幼苗离子吸收和分配的影响 |
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| 引用本文： | 郑青松,刘海燕,隆小华,刘兆普,牛丹丹,高影影.盐胁迫对油菜幼苗离子吸收和分配的影响[J].中国油料,2010(1):65-70. |
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| 作者姓名： | 郑青松 刘海燕 隆小华 刘兆普 牛丹丹 高影影 |
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| 作者单位： | 南京农业大学资源与环境科学学院,江苏省海洋生物学重点实验室,江苏南京210095 |
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| 基金项目： | 国家高技术研究发展计划（2007AA091702）; 江苏省博士后基金资助计划（0701015C） |
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| 摘 要： | 以宝杂油1号和本课题组选育品系南盐油11号为材料,比较了100和200mmol·L-1NaCl胁迫10d对两个甘蓝型油菜（Brassica napus L.）品种（系）幼苗生长及其离子吸收和分配的效应。结果表明,盐胁迫明显抑制油菜幼苗的生长,其中南盐油11号的耐盐性明显高于宝杂油1号。盐胁迫导致植株盐分（Na＋、Cl-）含量上升,地上部Na＋、Cl-积累明显高于根系;植株体内K＋、Ca2＋含量明显降低。盐胁迫下,维持体内较高的K＋/Na＋、Ca2＋/Na＋比率,维持较高的SK,Na、SCa,Na（离子吸收和运输的K＋、Ca2＋、Na＋选择性比率）是南盐油11号耐盐性高于宝杂油1号的重要原因。
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| 关 键 词： | 油菜 幼苗 盐胁迫 生长 离子平衡 |
Effects of salt stress on ionic absorption and distribution of rapeseed seedlings |
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| Authors: | ZHENG Qing-song LIU Hai-yan LONG Xiao-hua LIU Zhao-pu NIU Dan-dan GAO Ying-ying |
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| Affiliation: | (College of Resources and Environmental Sciences,Key Laboratory of Marine Biology,Nanjing Agricultural University,Nanjing 210095,China) |
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| Abstract: | Seedling growth,ionic absorption and distribution of two rapeseed materials （Brassica napus L.cv Baozayou 1 and B.napus L. line Nanyanyou 11） were studied under 10 days of NaCl （100 and 200 mmol·L-1） stress.The results showed significant inhibition on seedling growth and higher salt tolerance of Nanyanyou 11 under NaCl stresses. Ions of Na＋ and Cl-increased markedly and salt-ion content accumulation in shoots was much more than those in roots.NaCl stress led to decrease of K＋ and Ca2＋ contents. Higher salt tolerance of Nanyanyou 11 was mainly resulted from better ionic homeostasis and higher SK,Na and SCa,Na in roots. |
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| Keywords: | Rape Seedlings Salt stress Growth Ionic homeostasis |
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