宜宾油樟对三种农作物种子萌发的化感作用  

Allelopathy of Cinnamomum Longepaniculatum of Yibin on Seeds Germination of Three Crops

作　　者：罗通[1] 邓骛远[1] 曾进[1] 曾祥芬[2] 

机构地区：[1]宜宾学院生命科学与食品工程系,宜宾644007 [2]宜宾职业技术学院教务处,宜宾644000

出　　处：《宜宾学院学报》2007年第12期63-66,共4页Journal of Yibin University

基　　金：四川省教育厅重点项目072A146;宜宾市重点科技计划项目200503016;宜宾学院博士启动基金2006B02

摘　　要：采用生物测定法研究了宜宾油樟茎、叶水浸提液对玉米、水稻、小麦三种主要农作物种子萌发的化感作用。结果表明,油樟的化感作用和供体植物器官、受体植物种类以及浸提液浓度有密切关系。化感效应总趋势为叶>茎,或玉米>水稻>小麦。在实验设计的浸提液浓度范围内,0.075 g.m l-1的茎、叶浸提液对三种种子萌发的化感作用最强。油樟茎、叶对玉米种子萌发表现为化感促进作用,对水稻、小麦种子萌发表现为化感抑制作用。对种子萌发速率的化感效应敏感指数大大地大于最终发芽率的敏感指数,暗示油樟的化感作用主要是缩短玉米或延迟水稻、小麦种子萌发时间。建议在油樟林附近宜种植玉米,不宜种植水稻、小麦。The allelopathy of Cinnamomum longepaniculatum of Yibin on maize, rice and wheat was studied by bioassay method. The result shows that the allelopathy has close relation with supporter organs, receptors kinds and extract concentrations. The general trend of the allelopathy is leaf 〉 stem, or maize 〉 rice 〉 wheat. The allelopathy of 0. 075 g· ml ^- 1 extracts is the strongest in all extracts of the concentrations designed for the experiment. The leaves and stems promote maize germination, and inhibit germination of rice and wheat. The index of allelopathy effect （RI） to germination speed is much larger than the RI to final germination rate, which means the allelopathy mainly accelerates the germination of maize or delays thegermination of rice and wheat. So it is suggested that maize not rice and wheat be planted near belt of Cinnamomum longepaniculatum.

关 键 词：油樟 化感作用 种子萌发 方差分析 

分 类 号：Q949.93[生物学—植物学]