草业科学2012，Vol.29Issue(6)：894-897,4.
地肤根系分泌物对胡麻的化感作用
Ailelopathic effects of different concentration root exudates of Kochia scoparia on oil flax seed germination
摘要
Abstract
Allelopathic effects of different concentration root exudates of Kochia scoparia on oil flax seed germination were studied by using methods of bioassay. The results showed that： 1） different concentra-tions of K. scoparia root exudates had different degrees of inhibition （or promotion ） on germination ener-gy, germination rate, germination index and vigor index of oil flax seeds, while the inhibition rate increased with the treatment concentration rising. 2） Different concentrations of K. scoparia root exudates showed to promote the root length of oil flax seedlings and inhibit the shoot height, root fresh weight and shoot fresh weight. However, whether it is promotion or inhibition, the effects trended to be increased with the increase of concentration; but there was no significant difference between the treatments and the control. All these results showed that the root system secretion was one of the way in which K. scoparia could release allelochemicals and affect plant growth around them. 3） The reason of K. scoparia root exu-dates affecting flax seed germination was mainly due to inhibit the seed vigor index; and affecting flax seedling growth was largely due to made roots becoming thin and long.关键词
地肤/根系分泌物/胡麻/化感作用Key words
Kochia scoparia/root exudates/oil flax/allelopathic effect分类
农业科技引用本文复制引用
赵利,牛俊义,胡冠芳,党占海..地肤根系分泌物对胡麻的化感作用[J].草业科学,2012,29(6):894-897,4.基金项目
现代农业产业技术体系建设专项资金 （）
