黑木相思根瘤菌在厚荚相思苗木上的效应  

Effects of Acacia melanoxylon Rhizobia on A. crassccarp Seedlings

作　　者：陈文军 黄宝灵[2] 吕成群[2] 秦武明[2] 朱栗琼[2] 韦原莲[2] 

机构地区：[1]国有广西钦廉林场,广西合浦536128 [2]广西大学林学院,广西南宁530004

出　　处：《中南林业科技大学学报》2007年第4期12-17,共6页Journal of Central South University of Forestry & Technology

基　　金：广西自然科学基金资助项目(桂科基本法48005)

摘　　要：为了探讨不同相思树种根瘤菌互接种的效应,将黑木相思根瘤菌接种到厚荚相思苗木上,采用随机区组盆栽试验方法,研究苗木的结瘤、生长和固氮能力.结果表明:接种黑木相思根瘤菌能明显增加厚荚相思苗木的结瘤,证明不同相思树种之间,其共生的根瘤菌对宿主的要求并不十分的严格;但是,不同菌株对苗木的生长效应和固氮能力上存在明显的差别.因此,在开发根瘤菌资源时,应充分注意树种与菌株的匹配问题,在考察相思树种根瘤菌是否优良时,要综合考虑其侵染结瘤特性、对苗木生长的促进作用以及菌株的固氮酶活性及固氮量等因素.Acacia melanoxylon rhizobia were inoculated to A. crassccarp seedlings in order to research the effects of different Acacia rhizobium inoculations. The ncdulation characteristics, the growth and the ability of nitrogen fixation of A. crassccarp seedlings planted in flowerpots by random block experiments were measured. The results show that the nodulation of A. crassccarp seedlings is increased after Acacia melanoxylon rhizobia are inoculated; and that rhizobia of Acacia plants can make nodulation on different Acacia hosts, but different rhizobia of Acacia plants have different effects on the growth of A. crassccarp seedlings and their ability of nitrogen fixation. Therefore, much attention should be paid to the matching of plants and rhizobia, the nodulation characteristics, the ability of nitrogen fixation and the growing effect on the seedlings during the exploitation of the rhizobium resources.

关 键 词：黑木相思 厚荚相思 根瘤菌 接种效应 

分 类 号：S792.99[农业科学—林木遗传育种]