| The influence of adding CaCl2 on the isolation of actinomycetes from calcareous soil in arid areas |
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| DOI：10.7606/j.issn.1000-7601.2010.05.19 |
| Key Words: antagonistical actinomycetes isolation CaCl2 calcareous soil arid areas |
| Author Name | Affiliation | | XUE Qing | College of Plant Protection, Northwest A&F University, Yangling, Shaanxi 712100, China | | WANG Lingna | College of Life Sciences, Northwest A&F University, Yangling, Shaanxi 712100, China | | DUAN Chunmei | College of Resources and Environment, Northwest A&F University, Yangling, Shaanxi 712100, China | | LIN Yanbing | College of Life Sciences, Northwest A&F University, Yangling, Shaanxi 712100, China |
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| Abstract: |
| Dilution plate method was employed to study the effects of adding CaCl2 into Gause's No.1 medium on the isolation of actinomycetes from calcareous soil. The result showed that: (1) The total quantity of the actinomycetes isolated from calcareous soil in arid areas could be affected by CaCl2. The total quantity of the actinomycetes was increased from 23.9% to 47.0% mostly. The difference between treatments and the control was significant at 5% level. The effect on the total quantity of the streptomycete was different from that of actinomycetes. The increase range was from 17.5% to 123.3%, while the decrease range was from 18.0% to 42.5% compared with the control. But the decrease wasn't significant at 5% level (P＞0.05). (2) Adding CaCl2 into Gause's No.1 medium increased the quantity of broad-spectrum with strong antimicrobial antinomycetes. |
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