摘要
本文用室内生物测定法,研究了沙芥叶、果皮和枝条水浸提液对白菜种子萌发和幼苗生长及相关生理指标的影响。结果表明,不同部位水浸提液均能抑制白菜种子萌发及幼苗生长,且水浸提液浓度越高,抑制作用越强。各部位不同浓度水浸提液降低了白菜幼苗叶绿素、可溶性蛋白含量及根系活力,抑制了超氧化物歧化酶(SOD)和过氧化物酶(POD)活性,提高了叶片相对电导率与丙二醛含量(MDA)。沙芥不同部位水浸提液的化感作用强弱表现为叶>果皮>枝条。
In this paper, the effects of aqueous extracts from leaves, peels and branches ofPugionium cornutum on the germination of cabbage seed, growth and physiological indexes of cabbage seedling were studied by means of bioassay in laboratory. The results showed that aquatic extracts from different parts inhibited cabbage seed germination and seedling growth, and the inhibition effect enhanced with the increase of concentration. The different concentrations of aquatic extracts from different parts decreased chlorophyll, soluble protein contents and root activity of cabbage seedling, inhibited superoxide dismutase （SOD） and peroidase （POD） activities of the cabbage seedlings, increased leaf conductivity and MDA contents. The allelopathic effect order of aqueous extracts from different parts ofP. cornutum was leaf〉peel〉branch.
出处
《植物生理学报》
CAS
CSCD
北大核心
2015年第7期1109-1116,共8页
Plant Physiology Journal
基金
农业部公益性行业科研专项经费项目(201203004)
内蒙古主席基金和国家自然科学基金(31160393和30460080)
关键词
沙芥
白菜
水浸提液
化感作用
化感机理
Pugionium cornutum
cabbage
aqueous extracts
allelopathy effect
allelopathy mechanism
