Characterization of Rhizoctonia species involved in tree seedling damping-off in French forest nurseries

被引：11
|
作者：
Camporota, P [1 ]
Perrin, R [1 ]
机构：
[1] INRA, Stn Rech Flore Pathogene Sol BV, F-21034 Dijon, France
来源：
APPLIED SOIL ECOLOGY | 1998年 / 10卷 / 1-2期
关键词：
Rhizoctonia; nuclear condition; anastomosis group; damping-off; pathogenicity; forest nursery;
D O I：
10.1016/S0929-1393(98)00040-7
中图分类号：
S15 [土壤学];
学科分类号：
0903 ; 090301 ;
摘要：
A total of 166 Rhizoctonia isolates were obtained from damped-off pine seedlings grown on soils originating from two bareroot forest nurseries in France. A majority of these isolates, 70%, had multinucleate cells and were identified as Rhizoctonia solani. R. solani isolates could be assigned to three anastomosis groups: AG 2-1, AG 4 the most prevalent one and AG 5. They were all pathogenic to pine seedlings. Isolates belonging to AG 5 were most aggressive, resulting in postemergence damping-off in 99% of the test seedlings, Pinus nigra subsp. Laricio. The damping-off severity for AG 4 and AG 2-1 were 68 and 25% respectively. Possible thermic affinities of AG 2-1 and AG 4 isolates were discussed. (C) 1998 Elsevier Science B.V.
引用
收藏
页码：65 / 71
页数：7
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