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《Plant Protection》 2015-01
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Biological characteristics of Rhizoctonia solani isolated from potato

Tai Lianmei;Zhao Qiaolan;Jin Xuehui;Jin Guanghui;College of Agronomy,Heilongjiang Bayi Agricultural University;  
Biological characteristics of Rhizoctonia solani were studied by growth rate method.The results showed that the mycelium could grow under the temperature from 10 ℃to 35 ℃;the optimal temperature was 25-30 ℃,and the fastest growth of mycelia was at 30℃.The culture pH was 3-12,and the optimal pH was 5-7.Darkness could promote the growth of mycelia.Illumination could promote the formation of sclerotia.Various carbon and nitrogen sources significantly influenced the growth of mycelia.Soluble starch and yeast powder had significant promoting effects on the growth of mycelia.The lethal temperatures for mycelia and sclerotia were 49 ℃ and 51 ℃,respectively.The environmental conditions for R.solani isolated from potato in Heilongjiang were ascertained,which provides a theoretical basis for control of the disease.
【Fund】: 黑龙江省农垦总局攻关项目(HNKXIV-06-03B)
【CateGory Index】: S435.32
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