| 外源一氧化氮对盐胁迫下辣椒种子萌发和幼苗生理的影响 |
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| 引用本文： | 雍山玉,郁继华,王燕燕,徐晓昀,王玉洁.外源一氧化氮对盐胁迫下辣椒种子萌发和幼苗生理的影响[J].甘肃农业大学学报,2007,42(4):51-55. |
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| 作者姓名： | 雍山玉 郁继华 王燕燕 徐晓昀 王玉洁 |
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| 作者单位： | 甘肃农业大学农学院,甘肃,兰州,730070 |
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| 基金项目： | 甘肃省科技攻关计划项目(2GS052-A41-007-05). |
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| 摘 要： | 研究了0.1～2 mmol/L外源一氧化氮供体硝普钠(SNP)处理对100 mmol/L NaCl胁迫下辣椒种子萌发及幼苗生理特性的影响.结果表明:0.1～0.3 mmol/L SNP处理对缓解NaCl胁迫伤害的效果较好,可明显提高盐胁迫下辣椒种子发芽势、发芽指数和活力指数,其中0.3 mmol/L SNP处理可显著降低种子MDA含量,促进脯氨酸积累;0.1 mmol/L SNP处理可明显减缓NaCl胁迫下辣椒幼苗叶片质膜相对透性的增加,提高幼苗根系活力.
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| 关 键 词： | 辣椒 种子萌发 幼苗 一氧化氮 NaCl胁迫 |
| 文章编号： | 1003-4315（2007）04-0051-05 |
| 修稿时间： | 2006-12-08 |
Effects of exogenous nitric oxide on seed germination and seedling physiological characteristics of pepper under salt stress |
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| YONG Shan-yu,YU Ji-hua,WANG Yan-yan,XU Xiao-yun,WANG Yu-jie.Effects of exogenous nitric oxide on seed germination and seedling physiological characteristics of pepper under salt stress[J].Journal of Gansu Agricultural University,2007,42(4):51-55. |
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| Authors: | YONG Shan-yu YU Ji-hua WANG Yan-yan XU Xiao-yun WANG Yu-jie |
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| Institution: | College of Agronomy;Gansu Agricultural University;Lanzhou 730070;China |
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| Abstract: | Under 100 mmol/L NaCl stress condition,the effects of sodium nitropprusside(SNP,an exogenous nitric oxide donor) at the concentrations of 0.1～2 mmol/L on seed germination and seedling physiological characteristics of pepper were studied.The results showed that 0.1～0.3 mmol/L SNP treatments could alleviate the damage of NaCl to the seeds and seedlings of pepper effectively,and increase the seed germination force,germination indexes,activity indexes significantly.Especially,0.3 mmol/L SNP treatment could decrease the malondialdehyde(MDA) content of pepper seeds,and accelerate the accumulation of proline(Pro) under salt stress.Furthermore,0.1 mmol/L SNP treatment could alleviate the rise of membrane permeability of the mesophyll of pepper seedlings,and enhance the root activity in pepper seedlings under salt stress. |
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| Keywords: | pepper seed germination seedling nitric oxide NaCl stress |
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