| 亚精胺对盐胁迫下紫苏种子萌发和幼苗生理特性的影响 |
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| 引用本文： | 张春平,何平,喻泽莉,杜丹丹,胡世俊.亚精胺对盐胁迫下紫苏种子萌发和幼苗生理特性的影响[J].中草药,2011,42(7):1407-1412. |
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| 作者姓名： | 张春平 何平 喻泽莉 杜丹丹 胡世俊 |
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| 作者单位： | 1. 西南大学生命科学学院三峡库区生态环境教育部重点实验室,重庆市三峡库区植物生态与资源重点实验室,重庆,400715
2. 中国科学院昆明植物研究所,云南昆明,650204 |
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| 摘 要： | 目的 通过对紫苏种子萌发和幼苗生理特性的研究,寻找提高紫苏种子及幼苗在盐胁迫条件下的抗盐能力的方法.方法 测定不同浓度亚精胺(Spd)处理后的盐胁迫下紫苏种子的发芽势(Gv)、发芽率(Gr)和发芽指数(Gi),并对紫苏幼苗叶片的相对含水量、丙二醛(MDA)和超氧化物歧化酶(SOD)、过氧化物酶(POD)和过氧化氢酶(CAT)的活性进行了测定.结果 盐胁迫下的紫苏种子萌发受到显著抑制,但是经过不同浓度的Spd处理后,萌发指标均有所升高,其中经过0.25 mmol/L Spd处理,各项指标均达到最大,Gv为59.7%,Gr为69.4%,Gi为12.8.Spd处理减缓了盐胁迫下紫苏叶片的相对含水量和总黄酮降低的趋势,并且降低了叶片MDA的量.Spd处理后SOD、POD和CAT3种酶的活性均有所增加,但在Spd为0.25 mmol/L时达到最大值,分别为72.4 U/g、8.7 U/mg、8.8 U/mg.结论 0.25 mmol/L的Spd能够有效地减缓盐胁迫对紫苏种子及幼苗产生的伤害,提高了种子及幼苗的抗盐能力.
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| 关 键 词： | 紫苏 亚精胺 盐胁迫 种子萌发 生理特性 |
| 收稿时间： | 2010/9/23 0:00:00 |
Effect of spermidine on seed germination and physiological characteristics of Perilla frutescens seedlings under NaCl stress |
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| ZHANG Chun-ping,HE Ping,YU Ze-li,DU Dan-dan and HU Shi-jun.Effect of spermidine on seed germination and physiological characteristics of Perilla frutescens seedlings under NaCl stress[J].Chinese Traditional and Herbal Drugs,2011,42(7):1407-1412. |
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| Authors: | ZHANG Chun-ping HE Ping YU Ze-li DU Dan-dan and HU Shi-jun |
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| Institution: | ZHANG Chun-ping1,HE Ping1,YU Ze-li1,DU Dan-dan1,HU Shi-jun2 1.Key Laboratory of Eco-environments of Three Gorges Reservoir Region,Ministry of Education,Chongqing Key Laboratory of Plant Ecology and Resources Research for Three Gorges Reservoir Region,School of Life Sciences,Southwest University,Chongqing 400715,China 2.Kunming Institute of Botany,Chinese Academy of Sciences,Kunming 650204,China |
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| Abstract: | Objective In order to get the method for improving the salt resistance of Perilla frutescens seeds and seedlings under NaCl stress,the seed germination and physiological characteristics of P.frutescens seedlings were studied.Methods Several physiological indexes of P.frutescens seeds under NaCl stress,such as the germination vigor(Gv),germination rate(Gr),and germination index(Gi),were measured.And other indexes of the seedlings like relative water contents(RWC),malondialdehyde(MDA),superoxide(SOD),peroxida... |
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| Keywords: | Perilla frutescens(L ) Britton spermidine(Spd) NaCl stress seed germination physiological characteristics |
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