[关键词]
[摘要]
目的 研究野生麻黄根际的有益微生物。方法 利用土壤微生物研究法分离纯化微生物菌种,观察其个体形态和培养特征及主要生理特性。用菌液浸泡处理麻黄种子,进行室内发芽试验及田间育苗。结果 野生麻黄根际土壤微生物以细菌为主,其次是放线菌,真菌最少。从新疆野生中麻黄和膜果麻黄根际土壤中分离纯化出 17株细菌,发芽试验及田间育苗结果表明,其中 6株可以提高麻黄种子的发芽率并能在高盐碱的条件下生长。结论 麻黄根际微生物可提高麻黄种子的发芽率。该类微生物具有很强的耐盐碱能力。
[Key word]
[Abstract]
Object To study the useful microorganism of rhizosphere of wild Herba Ephedra (HE) methods Strains were isolated, purified and studied by the soil microbiological method After the seeds of E intermedia Schrenk ex Mey. were soaked, the germination test was carried out Results Number of microorganism of rhizosphere of wild HE are: bacteriaactinomycetesfungi There are 17 strains which were isolated from E intermedia Schrenk ex Mey. and E przewalskii Stapf in Xinjiang Results of the germination test indicate that six strains can make germination rate of E intermedia seed increase and can make it grow under the high concentration of NaCl and NaCO 3 Conclusion The microorganism of rhizosphere of wild HE can make the germination rate of E intermedia seed inerease They are all salt tolerant and alkali tolerant microorganism
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[基金项目]
国家攻关计划(2001BA606A-10-2);中国科学院知识创新工程项目(KZCX1-08-02);国家自然科学基金重大计划(90202019)