丁新景 黄雅丽 马风云 杜秉海 王贝贝 马海林 刘方春 李丽

(山东农业大学，泰安，271018) (山东省林业科学研究院)



根际促生菌对景天科多肉植物雪莲的促生作用1)

丁新景 黄雅丽 马风云 杜秉海 王贝贝 马海林 刘方春 李丽

(山东农业大学，泰安，271018) (山东省林业科学研究院)

为探讨不同根际促生细菌对雪莲的促生作用，选择阿氏芽孢杆菌(Bacillusaryabhattai)、弯曲芽孢杆菌(Bacillusflexus)、藤黄微球菌(Micrococcusluteus)以及铜绿色假单胞菌(Pseudomonasaeruginosa)4种根际促生菌，研究了其对雪莲植株生物量、根系形态、叶绿素质量分数、内源激素质量分数的影响。结果表明接种促生菌雪莲植株叶绿素质量分数提高14.77%～52.27%，接种B.aryabhattai雪莲叶绿素质量分数最高。接种4种促生菌雪莲植株玉米素、吲哚乙酸质量分数显著高于CK，接种B.flexus雪莲植株玉米素、吲哚乙酸质量分数最高，分别是CK的9.99、11.32倍。接种B.aryabhattai、B.flexus、M.luteus促生菌显著提高了雪莲根系的体积、鲜质量，根系体积分别提高了14.09%、21.82%、27.73%，鲜质量分别提高了45.83%、50.00%、41.67%。接种促生菌均促进了雪莲的生长，接种B.aryabhattai雪莲植株鲜质量和冠幅最高，与CK相比分别提高了38.18%、10.97%；其次为接种M.luteus，鲜质量和冠幅分别提高了24.28%、7.83%。促生菌对雪莲具有一定的促生作用，B.aryabhattai的促生作用最为显著，在景天科多肉植物中最具应用潜力。

景天；促生菌；根系；叶绿素；内源激素

Journal of Northeast Forestry University，2016,44(12)：26-30.

The experiment was conducted to investigate the effect of four plant growth promoting rhizobacteria (PGPR), includingBacillusaryabhattai,Cellulosimicrobiumcellulans,Micrococcusluteus, andPseudomonasaeruginosa, onEcheverialaui. We tested the biomass, root morphology, chlorophyll, endogenous hormones content ofE.laui. The chlorophyll content ofE.lauiinoculated with PGPR was increased by 14.77%-52.27% than control, respectively. Chlorophyll content ofE.lauiinoculated withB.aryabhattaiwas highest. Zeatin, indoleacetic acid content ofE.lauiinoculated with PGPR was higher than control, and Zeatin, indoleacetic acid content ofE.lauiinoculated withB.flexuswas highest, 9.99 and 11.32 times than that of control, respectively. Inoculating withB.aryabhattai,B.flexusandM.luteuscould improve volume, fresh weight ofE.laui, and the volume ofE.lauiwas increased by 14.09%, 21.82% and 27.73%, fresh weight ofE.lauiwas increased by 45.83%, 50.00% and 41.67% than control, respectively. PGPR improvedE.lauigrowth, fresh weight, and the crown ofE.lauiinoculated withB.aryabhattaiwere highest compared with control, and fresh weight and crown ofE.lauiwere increased by 38.18% and 10.97%. Secondly, fresh weight and crown ofE.lauiinoculated withM.luteuswere increased by 24.28% and 7.83%, respectively. Plant growth promoting ofB.aryabhattaionE.lauiwas most significantly between four PGPR.

植物根际促生细菌(PGPR)是生存在植物根圈范围内能够促进植物生长、防治病害、增加作物产量有益细菌的统称[1]。PGPR对土壤中非寄生性根际有害微生物与有害病原微生物起到生防作用，促进植物对矿物质营养的吸收和利用，产生利于植物生长的代谢产物，从而促进植物的生长发育[2-3]。……