| 盐胁迫下嫁接黄瓜和自根黄瓜幼苗的保护酶活性变化 |
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| 引用本文： | 蔡雁平,袁祖华,孙小武.盐胁迫下嫁接黄瓜和自根黄瓜幼苗的保护酶活性变化[J].湖南农业大学学报(自然科学版),2008,34(5). |
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| 作者姓名： | 蔡雁平 袁祖华 孙小武 |
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| 作者单位： | 1. 湖南农业大学,园艺园林学院,湖南,长沙,410128
2. 湖南省蔬菜工程与技术重点实验室,湖南,长沙,410125 |
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| 摘 要： | 以云南黑籽南瓜为砧木,以津绿4号黄瓜为接穗,研究了25,50,75 mmol/L NaCl胁迫下黑籽南瓜、嫁接黄瓜和自根黄瓜幼苗叶片中保护酶活性的变化以及黄瓜和黑籽南瓜种子的耐盐发芽能力.结果表明:在NaCl胁迫下,黑籽南瓜发芽率仍较高,而黄瓜发芽率明显下降.随着NaCl浓度的增大,各处理的POD和CAT活性均增强,黑籽南瓜的始终保持最高,嫁接黄瓜与黑籽南瓜接近,自根黄瓜最低.随着NaCl浓度的增大,各处理SOD活性都呈下降趋势,但黑籽南瓜下降幅度最小,自根黄瓜下降幅度最大,嫁接黄瓜与黑籽南瓜接近.嫁接黄瓜幼苗的耐盐性强于自根黄瓜幼苗,嫁接苗的耐盐性取决于砧木黑籽南瓜.
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| 关 键 词： | 盐胁迫 嫁接黄瓜 自根黄瓜 保护酶 |
Variation of protective enzyme's activity in grafted and self-rooted cucumber seedlings under salt stress |
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| CAI Yan-ping,YUAN Zu-hua,SUN Xiao-wu.Variation of protective enzyme''s activity in grafted and self-rooted cucumber seedlings under salt stress[J].Journal of Hunan Agricultural University,2008,34(5). |
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| Authors: | CAI Yan-ping YUAN Zu-hua SUN Xiao-wu |
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| Institution: | CAI Yan-ping1,YUAN Zu-hua2,SUN Xiao-wu1 (1.College of Horticulture , L,scape,HNAU,Changsha 410128,China,2.Key Laboratory of Hunan Province Vegetable Engineering , Technology,Changsha 410125,China) |
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| Abstract: | The protective enzymes activities in grafted and self-root cucumber seedlings under 25,50,75 mmol/L NaCl stress were studied using Yunnan black seed pumpkin as the stock and Jinlu NO.4 cucumber cultivar as the scion.And the germinative ability of Yunan black seed pumpkin and cucumber seeds under stress was studied too.The result showed that Yunan black seed pumpkin maintained a higher germination rate,and that of cucumber dropped signifcantly.Both SOD and CAT activity enhanced along with NaCl concentration ... |
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| Keywords: | salt stress grafted cucumber self-root cucumber protective enzyme |
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