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《薇甘菊对农田常见杂草和水稻化感作用的研究-论文.pdf》由会员上传分享,免费在线阅读,更多相关内容在行业资料-天天文库。
1、河南农业科学,2013,42(1O):8890JournalofHenanAgriculturalSciences薇甘菊对农田常见杂草和水稻化感作用的研究王建国,李拥军,郭佛杨,龚小珍(1.中山火炬职业技术学院,广东中山528436;2.中山市农产品质量监督检验所,广东中山528403)摘要:为了解薇甘菊(Mikaniamicrantha)中次生化合物对植物生长的影响,通过室内生测试验评价了薇甘菊乙醇提取物正丁醇部分对狗牙根(Cynodondactylon)、稗草(Echinochloacrusgalli)和牛筋草(Eleu
2、sineindica)3种常见农田杂草以及水稻(Oryzasativa)种子萌发和幼苗生长的化感作用。结果表明,干物质质量浓度为0.005~0.100g/mL的薇甘菊乙醇提取物正丁醇部分对狗牙根、稗草和牛筋草种子萌发和幼苗生长均有抑制作用,且随着溶液质量浓度的增加抑制作用增强,其中0.050~0.100g/mL的薇甘菊提取物表现出显著的抑制效应;干物质质量浓度为0.025~0.100g/mL的薇甘菊提取物对水稻种子萌发和幼苗生长有不同程度的抑制作用,其中0.050~0.100g/mL的薇甘菊提取物表现出显著的抑制效应,而质量
3、浓度为0.005g/mL的薇甘菊提取物则对水稻幼苗生长表现出一定的促进作用。因此,施加少量薇甘菊乙醇提取物正丁醇部分溶液可以有效控制稻田杂草,且不会对水稻生长产生明显的抑制作用。关键词:薇甘菊;化感作用;植物源农药;除草剂;水稻;杂草中图分类号:$451文献标志码:A文章编号:1004—3268(2013)10—0088—03AlleloDathicEffectsofMikaniamicranthaonCommonCroplandWeedsandRiceWANGJian—guo,LIYong—iun,GUOFo—yang,G
4、ONGXiao—zhen(1.ZhongshanTorchPolytechnic,Zhongshan528436,China;2.ZhongshanQualitySupervision&InspectionInstituteofAgriculturalProducts,Zhongshan528403,China)Abstract:TounderstandtheinfluenceofthesecondarycompoundsofMikaniamicranthaonplantgrowth,theallelopathicpoten
5、tialofnormalbutanolportionofMikaniamicranthaethanolleachateontheseedgerminationandseedlinggrowthofOryzasativaandthreecommoncroplandweedsincludingCynodondactylon,Echinochloacrusgalli,andEleusineindicawasevaluatedinlaboratory.TheMikaniamicrantha1eachateof0.005—0.100g
6、/mLdisplayedinhibitoryeffectsontheseedgerminationandseedlinggrowthofthethreecommoncroplandweeds,andtheinhibi—toryeffectsincreasedwiththeincreasingconcentrationoftheleachate,inwhichtheconcentrationof0.050—0.100g/mIdisplayedsignificantinhibitoryeffects.TheMikaniamicr
7、anthaleachateof0.025——0.100g/mLalsodisplayedinhibitoryeffectsontheseedgerminationandseedlinggrowthofOryzasativa,andtheconcentrationof0.050——0.100g/mLdisplayedsignificantinhibitoryeffects;However,theleachateofMikaniamicranthaat0.005g/mLpromotedseedlinggrowthofOryzas
8、ativa.TheseresultsindicatethatappropriateapplicationofethanolleachateofMikaniamicranthainpaddyfieldcannotonlycontroltheweeds,butalsonotobviouslyi
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