| 干旱胁迫对板栗幼苗保护酶活性的影响 |
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| 引用本文： | 张鹏,孙明高,宋尚文,马万侠,吕廷良.干旱胁迫对板栗幼苗保护酶活性的影响[J].山东农业大学学报(自然科学版),2010,41(1). |
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| 作者姓名： | 张鹏 孙明高 宋尚文 马万侠 吕廷良 |
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| 作者单位： | 山东农业大学林学院重点实验室,泰安,271018 |
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| 基金项目： | 国家科技攻关计划重大专项"中国森林网络体系的研究"，山东省农业良种产业化开发工程项目 |
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| 摘 要： | 本文以一年生实生苗板栗(Castanea mollissima BL.)为研究对象,采用盆栽控水的方法,对持续干旱和水分梯度控水两种条件下 ,对苗木的酶活性进行测定.结果表明板栗的SOD、POD、CAT、APX具有协同作用,从而有效清除植株体内过多的自由基,提高了苗木适应干旱胁迫的能力.但从O_2.产生速率来看,在胁迫后期O_2.产生速率开始大幅度上升,说明此时,整个清除自由基防御系统的防御能力已经开始变弱了,推测可能是自由基的过量生成,超越了防御系统的清除能力.
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| 关 键 词： | 干旱胁迫 板栗幼苗 保护酶酶活性 |
EFFECE OF DROUGHT STRESS ON ACTIVITY OF CELL DEFENSE ENZYMES IN LEAVES OF CASTANEA MOLLISSIMA BL.SEEDLINGS |
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| ZHANG Peng,SUN Ming-gao,SONG Shang-wen,MA Wan-xia,LV Ting-liang.EFFECE OF DROUGHT STRESS ON ACTIVITY OF CELL DEFENSE ENZYMES IN LEAVES OF CASTANEA MOLLISSIMA BL.SEEDLINGS[J].Journal of Shandong Agricultural University,2010,41(1). |
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| Authors: | ZHANG Peng SUN Ming-gao SONG Shang-wen MA Wan-xia LV Ting-liang |
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| Institution: | ZHANG Peng,SUN Ming-gao*,SONG Shang-wen,MA Wan-xia,LV Ting-liang(Couege of Plant Protection,Sh,ong Agricultural University,Tai an 271018,China) |
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| Abstract: | One-year old Castanea mollissimaBL.seedlings were studied under drought stress to measure the activity of the cell enzymes by using pot water-controlling method,through two different water-controlling approaches of persistent drought and moisture gradient in this paper.The results show that the four protective enzymes,SOD,POD,CAT and APX integrated cooperately to eliminate the extra free radical,and hence increaed the seedling adaptibility to drought stress.The generating rate of O2.increased greatly at the... |
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| Keywords: | Drought stress Castanea mollissima BL seedlings activity of cell defense enzymes |
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