太子参根际促生菌组合对间作玉米种子活力及幼苗生长的影响  

Effects of Combination of Growth-promoting Rhizobacteria from Pseudostellaria heterophyllaon Seed Vigor and Seedling Growth of Intercropping Maize

作　　者：欧阳桂炉 任建国[2] 王俊丽[1] 孙晓红[1] 

机构地区：[1]贵阳医学院公共卫生学院,贵州贵阳550001 [2]贵阳医学院医学生物工程系,贵州贵阳550001

出　　处：《种子》2015年第2期46-51,共6页Seed

基　　金：贵州省三地联合项目施中药科合专项(2012)6号

摘　　要：为了探明太子参根际促生菌组合对间作玉米种子萌发及幼苗生长的影响。采用25析因试验设计,通过恒温萌发试验,研究了5个根际促生菌株不同组合对太子参间作玉米种子活力及幼苗生长的影响。结果表明,菌株组合A1B1C2D2E2、A2B1C1D2E1(或A2B2C1D1E1)、A1B1C1D1E1、A1B2C2D2E2、A1B1C2D2E2、A1B2C2D2E1、A2B2C2D1E1、A1B1C2D1E2、A1B2C2D2E2分别对种子发芽势、发芽率、脱氢酶活性、幼苗长、胚根长、下胚轴长、须根数、幼苗干重和根干重的影响作用最明显。根际促生菌对玉米幼苗长、胚根长、下胚轴长、须根数、幼苗干重、根干重的作用存在交互作用,其中菌株组合A1B1C1D2E1明显增加玉米幼苗干重、根干重及促进幼苗生长,有望用于太子参微生物肥料的研制中。To explore the effects of growth-promoting rhizobacteria from Pseudostellaria heterophylla on the seed germination and seedling growth of intercropping maize, the experiments with 25 factorial design were carried out at constant temperature. The results showed that strain combinations, A1B1C2D2E2, A2B1C1D2E1 （or A2B2C1D1E1 ）, A1B1C1D1E1, A1B2C2D2E2, A1B1C2D2E2, A1B2C2D2E1, A2B2C2D1E1, A1B1C2D1E2 and A1B2C2D2E2 had the most obvious effects on germination potential, germination rate, dehydrogenase activity, seedling length, radicule length, hypocotyls length, the number of fibrous roots, dry weight of seedlings and dry weight of roots, respectively. There existed the interactions among five growth-promoting rhizobacteria on seedling length, radicule length, hypocotyls length, the number of fibrous roots, dry weight of seedlings and dry weight of roots. The combination of A1B1 C1D2E1 could increase the dry weights of seedlings and roots and promote the seedling growth, which would be used in the production of microbial fertilizer of Pseudostellaria heterophylla.

关 键 词：太子参 根际促生菌 玉米 种子活力 析因设计 

分 类 号：Q939.96[生物学—微生物学]