天然土壤和改良土壤中挥发性抑制剂对菜豆壳球孢菌菌核萌发的影响。

Effect of volatile inhibitors from natural and amended soils on germination of sclerotia of Macrophomina phaseolina.

作者信息

Papavizas G C

出版信息

Can J Microbiol. 1976 Jul;22(7):1034-9. doi: 10.1139/m76-150.

Abstract

Studies on volatile soil fungistasis showed that sclerotia of Macrophomina phaseolina are not sensitive to volatiles liberated by natural soils with varying pH values. Soil amended with alfalfa hay (1%, w/w) liberated volatiles fungistatic to sclerotia only when the assay was performed 2 weeks or less after amendment. Chitin-amended soils liberated fungistatic volatiles from 1 to 3 weeks after amendment. Indirect evidence indicated that ammonia may be the active volatile in amended soil. It was concluded that fungistatic volatiles may not play an important role in the survival of sclerotia in nature.

摘要

对土壤挥发性抑菌作用的研究表明，菜豆壳球孢菌的菌核对不同pH值的天然土壤释放的挥发性物质不敏感。用苜蓿干草（1%，w/w）改良的土壤，只有在改良后2周或更短时间进行测定时，才会释放出对菌核有抑菌作用的挥发性物质。用几丁质改良的土壤在改良后1至3周释放出抑菌挥发性物质。间接证据表明，氨可能是改良土壤中的活性挥发性物质。得出的结论是，抑菌挥发性物质可能在菌核在自然界中的存活中不起重要作用。