首页 | 本学科首页   官方微博 | 高级检索  
     检索      

干旱胁迫对4种灌木生理生化特性的影响
引用本文:于金慧,柏明娥,方伟,洪利兴.干旱胁迫对4种灌木生理生化特性的影响[J].浙江林学院学报,2009,26(4):485-489.
作者姓名:于金慧  柏明娥  方伟  洪利兴
作者单位:1. 浙江林学院,林业与生物技术学院,浙江,临安,311300;浙江省林业科学研究院,浙江,杭州,310023
2. 浙江省林业科学研究院,浙江,杭州,310023
3. 浙江林学院,林业与生物技术学院,浙江,临安,311300
基金项目:浙江省科技计划面上项目,浙江省科技计划院所专项 
摘    要:采用自然干旱方式,对美丽胡枝子Lespedeza formosa,马棘Indigofera pseudotinctoria,伞房决明Cassiacorymbosa和紫穗槐Amorpha fruticosa等4种灌木进行干旱胁迫条件下的抗氧化酶(超氧化物歧化酶SOD和过氧化物酶POD)活性、脯氨酸(Pro)质量分数和丙二醛(MDA)质量摩尔浓度的影响试验。结果表明:在土壤相对含水量逐渐下降的过程中,美丽胡枝子和马棘的SOD活性初期变化较小,后期迅速上升.复水后有所下降。伞房决明和紫穗槐则是初期上升至最大值后下降,复水后小幅上升:POD活性总体上均呈先升后降复水后上升的变化趋势,但不同植物的POD活性大小存在一定差异:MDA质量摩尔浓度在胁迫初期下降,随胁迫程度的加剧,逐渐上升,复水后又下降;Pro质量分数在胁迫期间上升、复水后下降.美丽胡枝子变化幅度最大,伞房决明变幅最小。干旱胁迫引起了美丽胡枝子等4种灌木植物体内生理生化物质含量的变化.但不同植物的变化趋势不尽相同,受植物体内物质的综合调控,其抗旱机制存在一定差异.相比之下伞房决明的抗旱能力较强。图5参10

关 键 词:植物学  干旱胁迫  美丽胡枝子  马棘  伞房决明  紫穗槐

Physiological and biochemical substances of four shrubs with drought stress
YU Jin-hui,BAI Ming-e,FANG Wei,HONG Li-xing.Physiological and biochemical substances of four shrubs with drought stress[J].Journal of Zhejiang Forestry College,2009,26(4):485-489.
Authors:YU Jin-hui  BAI Ming-e  FANG Wei  HONG Li-xing
Institution:YU Jin-hui, BAI Ming-e, FANG Wei, HONG Li-xing (1. School of Forestry and Biotechnology, Zhejiang Forestry College, Lin'an 311300, Zhejiang, China; 2. Zhejiang Forestry Academy, Hangzhou 310023, Zhejiang, China)
Abstract:Four shrubs, Lespedeza formosa, lndigofera pseudotinctoria, Cassia corymbosa, A morpha fruticosa, were studied with natural drought stress (no watering) of four lasting drought stages and subsequent watering, in regards to antioxidant enzyme activity, praline (Pro) content and malondialdehyde (MDA) content. The control was seedlings with normal watering. Thirty seedlings of each shrubs were randomly ar- ranged with three replications. Physical indexes were determined every seven days. The results showed that superoxide dismutase (SOD) activity of L. formosa and I. pseudotinctoria had a significant increase (P〈 0.05) at the end of the drought stress, and decreased significantly (P〈0.05) after watering again. Mean-while, C. corymbos decreased significan later increased sign same trend, that is a and A. fruticosa rose sharply with significant difference (P〈0.05) then continually tly (P〈0.05), and after watering again, the former decreased insignificantly while the ificantly; changes for peroxidase (POD) activity of the four shrubs almost followed a , after increasing, there was a significant decrease (P〈0.05), then increased distinctively after watering again. Pro content kept significant increase (P〈0.05) while decreased significantly (P〈0.05) after watering again with the most extent of L. formosa and the least of C. corymbosa. MDA content decreased indistinctively and then increased significantly (P〈0.05) before undergoing a significant decrease (P〈0.05) after watering with drought stress differed due to drought by comprehensive analysis. again. Overall, changes in biochemical substances of the four shrubs plant material itself and C. corymbosa exhibiting the best resistance to Ch, 5 fig. 10 ref.]
Keywords:botany  natural drought stress  Lespedeza formosa  Indigofera pseudotinctoria  Cassia corymbosa  A morpha fruticosa
本文献已被 维普 万方数据 等数据库收录!
点击此处可从《浙江林学院学报》浏览原始摘要信息
设为首页 | 免责声明 | 关于勤云 | 加入收藏

Copyright©北京勤云科技发展有限公司  京ICP备09084417号