| 外源亚精胺对盐胁迫下辣椒幼苗生长抑制的缓解效应 |
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| 引用本文： | 汪志伟,贠文俊,颉建明,李盈.外源亚精胺对盐胁迫下辣椒幼苗生长抑制的缓解效应[J].甘肃农业大学学报,2009,44(4). |
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| 作者姓名： | 汪志伟 贠文俊 颉建明 李盈 |
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| 作者单位： | 1. 甘肃农业大学农学院,甘肃,兰州730070
2. 兰州市种子管理站,甘肃,兰州730000 |
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| 摘 要： | 以辣椒(Capsicum annuumL)幼苗为试材,研究了0.1 mmol.L-1外源亚精胺(Spd)对100 mmol.L-1NaCl胁迫下辣椒幼苗叶片相对含水量、叶绿体色素含量、根系活力、细胞膜透性以及植株地上、地下部干鲜重等各项指标的影响.结果表明:外源Spd的施用,显著降低了盐胁迫导致的幼苗叶片相对含水量、叶绿体色素含量、根系活力与干鲜重下降的幅度,同时有效抑制了盐害造成的细胞膜透性的增大.适量的外源Spd可以减轻NaCl胁迫对辣椒幼苗的盐伤害.
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| 关 键 词： | 辣椒 亚精胺 NaCl胁迫 |
Mitigative effect of exogenous spermidine on growth inhibition in pepper seedlings under NaCl stress |
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| WANG Zhi-wei,YUN Wen-jun,XIE Jian-ming,LI Ying.Mitigative effect of exogenous spermidine on growth inhibition in pepper seedlings under NaCl stress[J].Journal of Gansu Agricultural University,2009,44(4). |
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| Authors: | WANG Zhi-wei YUN Wen-jun XIE Jian-ming LI Ying |
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| Institution: | WANG Zhi-wei1,YUN Wen-jun2,XIE Jian-ming1,LI Ying1(1.College of Agronomy,Gansu Agricultural University,Lanzhou 730070,China,2.Lanzhou Seed Management Station,Lanzhou 730000,China) |
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| Abstract: | Using pepper seedlings as materials,the effect of treatment at 0.1 mmol·L-1 spermidine were studied on relative water content,chlorophyll contents,root activity,membrane permeability,fresh weight and dry weight in leaves of pepper seedlings under 100 mmol·L-1 NaCl stress.The results showed that the reduction degree of relative water content,chlorophyll contents,root activity,fresh weight and dry weight were significantly decreased in leaves of pepper seedlings under NaCl stress.An effective inhibition was increased in membrane permeability which was caused by salt stress when exogenous spermidine applied.It is suggested that spermidine could reduce the damage of salt stress on pepper seedlings. |
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| Keywords: | pepper spermidine NaCl stress |
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