13种木本植物不同器官和浒苔对生菜幼苗生长的影响  

Effects of Different Organs of 13 Species of Woody Plants and Enteromorpha prolifra on the Growth of Lettuce Seedlings

作　　者：杨玉良[1] 宋吉青[2] 杨从军[1] 罗小勇[1] 

机构地区：[1]青岛农业大学农学与植物保护学院/山东省农作物病虫害综合防控重点实验室,山东青岛266109 [2]中国农业科学院农业环境与可持续发展研究所/农业部农业环境与气候变化重点开放实验室/农业部旱作节水农业重点开放实验室,北京100081

出　　处：《杂草科学》2012年第3期16-20,共5页Weed Science

基　　金：科技部"十二五"农村领域国家科技计划项目子课题(编号:2011AA100503);山东省"泰山学者"建设工程专项经费

摘　　要：为了明确13种常见的木本植物不同器官及浒苔的化感活性,为其有效利用提供依据,以生菜为受体,采用琼脂混粉法测定了它们在0.005～0.5 g/L供试浓度下对生菜幼苗生长的影响。结果表明,在上述供试浓度下,13种木本植物不同器官及海洋藻类浒苔对生菜幼苗的生长均具有不同程度的影响,其中,在0.005～0.1 g/L的供试浓度下,金叶千头柏与碧桃的枝、紫丁香与紫荆的叶等器官均表现出了相对较高的刺激根系生长活性。其他植物器官刺激生长的活性相对较低,或表现为抑制活性。In order to understand the allelopothic activities of differem woody plants and marine algae （Enteromorpha prolifra）, and to provide a reasonable evidence for their further effective utilization, lettuce （Lactuca sativa Linn. vat. ramosa） seedlings were used as receptor to test the effects of different organs of 13 species of woody plants and marine algae on seedling growth of lettuces at the contentration of 0. 005 -0.5 g/L via mixed agar powder（PPA） method. The results showed that different organ of 13 species of woody plants and the marine algae have different effects on the growth of lettuce seedling. The branches of Platycladus orientalis cv. semperarescens and Prunus persica, and the leaves of Srringa oblata and Cercis chinensia presented rather high stimulating activity on root growth of lettuce seedlings at the concentration of 0. 005 - 0. 1 g/L. The other plant organs showed relatively lower stimulating activity or inhibitory activity on the root growth d lettuce seedling.

关 键 词：木本植物 化感活性 刺激生长 琼脂混粉法 生菜 

分 类 号：Q945.7[生物学—植物学]