Biological Characteristics of Soybean Sclerotinia sclerotiorum in Sanjiang Plain Region(PDF)
《大豆科学》[ISSN:1000-9841/CN:23-1227/S]
- Issue:
- 2013年03期
- Page:
- 385-388
- Research Field:
- Publishing date:
Info
- Title:
- Biological Characteristics of Soybean Sclerotinia sclerotiorum in Sanjiang Plain Region
- Author(s):
- DING Jun-jie
- (Jiamusi Branch of Heilongjiang Academy of Agricultural Sciences/Scientific Observation and Experimental Station of Pests in Jiamusi,Ministry of Agriculture,Jiamusi 154007,China)
- Keywords:
- Soybean; Sclerotinia stem rot; Biological characteristics
- PACS:
- S565.1
- DOI:
- 10.11861/j.issn.1000-9841.2013.03.0385
- Abstract:
- Sclerotinia sclerotiorum strains isolated and purified from the disease nursery of the Jiamusi Branch of Heilongjiang Academy of Agricultural Sciences were cultured to control the disease of Sclerotinia stern rot.The optimum temperature and the depth in soil for sclerotium germination,the germination period for apothecia and the relationship of planting density and infection incidence of Sclerotinia sclerotiorum were researched.The optimum growth temperature and pH for Sclerotinia sclerotiorum was 20-25℃ and 5.0,respectively, and the pathogen could not grow in the alkaline environment.The germination of sclerotium from soil surface was the best,while the sclerotium below 5 cm soil could not germinate.The peak of apothecia germination was at the end of July,which was R2 period of soybean.Planting density of soybean was positively related to the severity of soybean sclerotinia disease.Properly reducing the plant density of soybean could effectively prevent and control the soybean sclerotinia.
Last Update: 2014-03-04