当前位置: 首页 > 文章 > 芽孢杆菌与植物生长调节剂在苔藓结皮种源扩繁中的作用 水土保持通报 2019 (5) 166-171
Position: Home > Articles > Effects of Bacillus and a Plant Growth Regulator for Provenance Propagation of Moss Biocrusts Bulletin of Soil and Water Conservation 2019 (5) 166-171

芽孢杆菌与植物生长调节剂在苔藓结皮种源扩繁中的作用

作  者:
王清玄;鞠孟辰;卜崇峰
单  位:
中国科学院大学;中国科学院水利部水土保持研究所;西北农林科技大学水土保持研究所
关键词:
苔藓结皮;种源扩繁;芽孢杆菌;生长调节剂;生长发育
摘  要:
[目的]研究芽孢杆菌与植物生长调节剂对苔藓结皮生长发育的影响,为提高苔藓结皮种源扩繁效率提供科学依据。[方法]选择芽孢杆菌(胶质芽孢杆菌/巨大芽孢杆菌)与生长调节剂(噻苯隆)2种因素,设计双因素完全试验,观测温室条件下苔藓结皮的覆盖度、株高度和株密度。[结果]①只添加胶质芽孢杆菌处理的苔藓生长状况最优,相比对照组(未添加芽孢杆菌及生长调节剂)分别提高了苔藓覆盖度(+18.9%)、株高度(+0.85 mm)和株密度(+15.44株/cm~2);②添加巨大芽孢杆菌能提高苔藓株密度(+5.76株/cm~2),但会减小其株高度(-0.78 mm),对盖度则无显著影响;③生长调节剂TDZ减小了苔藓植物覆盖度(-11.78%)、株高度(-3.33 mm),对株密度影响不显著;④芽孢杆菌与生长调节剂存在交互作用,巨大芽孢杆菌+TDZ处理增大了苔藓株密度(+9.79株/cm~2),且高于只添加巨大芽孢杆菌处理(+3.67株/cm~2),胶质芽孢杆菌+TDZ处理增加苔藓株密度(+4.3株/cm~2)但弱化了胶质芽孢杆菌的促进作用(-11.14株/cm~2)。[结论]功能性微生物与生长调节剂对苔藓结皮生长发育具有显著影响,在今后苔藓结皮种源扩繁实践中应加以考虑和借鉴。
译  名:
Effects of Bacillus and a Plant Growth Regulator for Provenance Propagation of Moss Biocrusts
作  者:
Wang Qingxuan;Ju Mengchen;Bu Chongfeng;Institute of Soil and Water Conservation, Chinese Academy of Sciences and Ministry of Water Resources;University of Chinese Academy of Sciences;Institute of Soil and Water Conservation, Northwest A&F University;
关键词:
moss biocrusts;;provenance propagation;;Bacillus;;growth regulator;;growth and development
摘  要:
[Objective] The effects of Bacillus and a plant growth regulator on the growth and development of moss biocrusts were studied in order to provide a scientific basis for improving the provenance propagation efficiency of moss biocrusts. [Methods] A two-factor complete experiment was designed to observe the coverage, height, and density of moss biocrusts under greenhouse conditions by selecting Bacillus(B. mucilaginosus/B. megaterium) and growth regulator(Thidiazuron, TDZ) as the two variables. [Results] ① The growth status was optimal after the addition of B. mucilaginosus, which increased the coverage(+18.9%), height(+0.85 mm), and density(+15.44 strains/cm) compared to the control group(no Bacillus and growth regulator). ② After the addition of B. megaterium, the density of moss biocrusts increased(+5.76 strains/cm~2); however, the height decreased(-0.78 mm) and the coverage was not significantly changed. ③ Treatment with TDZ reduced the coverage(-11.78%) and height(-3.33 mm); however, it had no significant effect on the density of moss biocrusts. ④ The growth status of BSC was significantly affected by the interaction of Bacillus and TDZ. The combination treatment of B. megaterium and TDZ increased the density of moss biocrusts(+9.79 strains/cm~2) and was higher than that of the treatment where only B. megaterium was added(+3.67 strains/cm~2). Additionally, the combined treatment of B. mucilaginosus and TDZ increased the density of moss biocrusts(+4.3 strains/cm~2); however, it weakened the positive effect of B. mucilaginosus(-11.14 strains/cm~2). [Conclusion] The effects of functional microorganisms and a growth regulator on the growth and development of moss biocrusts are very significant, which should be considered during the practice of provenance propagation of moss biocrusts.

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