黄顶菊浸提液对5种作物种子萌发和幼苗生长的化感效应  

Allelopathic Effects of Water Extracts from the Flaveria bidentis(L.)Kuntze on Seed Germination and Seedling Growth of Five Crop Seeds

作　　者：代磊[1,2] 欧行奇 李新华[1,2] 简在友 周修任[1,2] 孟丽 许桂芳[1,2] DAI Lei;OU Xingqi;LI Xinhua;JIAN Zaiyou;ZHOU Xiuren;MENG Li;XU Guifang(He’nan Institute of Science and Technology,Xinxiang He’nan 453003,China;Collaborative Innovation Center of Modem Biological Breeding, He’nan Province,Xinxiang He’nan 453003,China)

机构地区：[1]河南科技学院,河南新乡453003 [2]现代生物育种河南省协同创新中心,河南新乡453003

出　　处：《种子》2018年第8期47-51,共5页Seed

基　　金：河南省重大科技专项(151100110700);河南科技学院博士科研启动基金项目(201010613003);河南科技学院教育教学课程改革研究项目(2017PUKC 02);河南省教育厅自然科学项目(15B180003);新乡市科技发展计划项目(14NY 17)

摘　　要：为了解黄顶菊的化感效应,研究了不同浓度的黄顶菊种子浸提液及茎杆浸提液对5种作物种子萌发及幼苗生长的化感作用。结果表明:黄顶菊种子浸提液除了0.02g/mL浓度对春菜的发芽率和茎长不产生抑制效应外,其他各个处理都表现出抑制作用,且随着浸提液浓度的增加而化感效应增强;RI和SE值大都为负值,说明黄顶菊浸提液的化感抑制效应明显,且不同种子对黄顶菊浸提液的敏感程度不同,生菜、春菜、芥兰对黄顶菊种子浸提液的敏感程度大小依次为生菜>春菜>芥兰。2种小麦对黄顶菊茎秆浸提液的敏感性大小依次为周麦18>百农207。因此,在黄顶菊入侵严重且防除不好的地区,针对这5种作物来说,可优先选择芥兰、春菜和百农207。In order to understand the allelopathic effect of Flaveria bidentis L.,the effects of different concentrations of water extracts from Flaveria bidentis seed and stem on the seedling growth of Lactuca sativa L.,Brassica alboglabra Bailey,Brassica juncea and two kinds of wheat(Zhoumai 18 and Bainong 207)were determined.The results showed that Flaveria bidentis seed extract showed inhibition effect on Lactuca sativa L.and Brassica alboglabra Bailey under the different concentration,and with the increase of the concentration of the leaching solution and the allelopathic effect of reinforcement;except in low concentration(0.02 g/mL)on the germination rate and the stem length of Brassica juncea had no inhibition effect.Most of the integration of RI and SE values were negative,indicating that the inhibition effect of Flaveria bidentis water extracts was obvious,and different seeds had different sensitivity to the extracts of Flaveria bidentis.The sensitivity of three vegetable seeds to the allelopathic effect of Flaveria bidentis was in the order of Lactuca sativa L.>Brassica juncea>Brassica alboglabra Bailey from highest to lowest allelopathic sensitivity.The sensitivity of two kinds of wheat seeds to the allelopathic effect of Flaveria bidentis was in the order of Zhoumai 18>Bainong 207.Therefore,for the five crops,Brassica alboglabra Bailey,Brassica juncea and Bainong 207 are given priority in areas where the Flaveria bidentis invasion is serious and difficult to control.

关 键 词：黄顶菊 化感作用 种子 防除 

分 类 号：S451[农业科学—植物保护]