花椒叶浸提液对大豆种子萌发和幼苗生长的化感作用  

Allelopathic Effect of Zanthoxylum bungeanum Extracts on Seed Germination and Seedling Growth of Soybean

作　　者：韩志军[1,2] 陈静[1] 郑寒[1] 马建华[1] 吴瑜[1] 冯鹏真[3] 周建平[3] 

机构地区：[1]中国科学院成都生物研究所生态恢复重点实验室,成都610041 [2]电子科技大学生命科学与技术学,院成都610054 [3]电子科技大学生命科学与技术学院,成都610054

出　　处：《应用与环境生物学报》2011年第4期585-588,共4页Chinese Journal of Applied and Environmental Biology

基　　金：国家自然科学基金项目(No.30871527);国家科技支撑计划项目(No.2008BAD98B03);国家转基因植物研究与产业化开发专项(Nos.2009ZX08009-010B,2009ZX08002-003B);四川省作物育种攻关项目资助~~

摘　　要：研究了不同浓度的花椒叶浸提液(5、10、20、40、80 g L-1)对3个大豆品种种子萌发、幼苗生长的化感作用.结果表明:花椒对大豆化感效应的总体趋势为浸提液浓度越高,对大豆生长的抑制作用越强;高于40 g L-1的浓度处理,主要形态和生化指标都表明大豆生长受到显著抑制或破坏;在小于20 g L-1的浓度范围内,化感作用能够提高低活力种子的萌发率,但降低了种子发芽指数和发芽速度,且化感作用受受体品种差异和自身种子活力的影响而表现不一致;随着化感物质浓度增高,SOD酶活显著降低,丙二醛(MDA)含量持续增高.大豆幼苗各器官或组织受花椒化感作用的影响大小依次为根生物量>地上部生物量>株高>根长.The allelopathic effects of different concentrations of aqueous extract of Zanthoxylum bungeanum leaves on seed germination and early seedling growth of three soybean varieties were investigated. The results showed that the inhibition of plant growth enhanced as the extract concentration increased. Both the data of morphological and biochemical parameters suggested that the extract at concentration 〉40 g L^-1 strongly inhibited seed germination and seedling growth of soybean. However, the extract at concentration 〈20 g L^-1 promoted the germination rate of seed with lower vigor, whereas the seed germination index decreased and seed germination time was prolonged. Different change patterns of seed germination were observed among the three varieties, indicating that allelopathic action was affected by either seed vigor or genotype. With the concentration of aqueous extract increasing, the MAD content increased constantly, while SOD activity was significantly inhibited. The sensitivity of seedling to the allelopathic effects of Z. bungeanum was in the order of underground biomass 〉 aboveground biomass 〉 plant height 〉 root length. Fig 2, Tab 3, Ref 12

关 键 词：花椒 化感作用 种子萌发 幼苗生长 大豆 

分 类 号：S565.1[农业科学—作物学]