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KMID : 0379119980260030373
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Korean Journal of Mycology
1998 Volume.26 No. 3 p.373 ~ p.379
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Analyses of Genetic Relationships of Rhizoctonia solani Isolates from Various Crop Species and Rapid Identification of Anastomosis Groups with RAPD Method
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강원희/Kang, Won Hee
김경수/최혜선/이민웅/이윤수/심재욱/김명조/Kim, Kyoung Su/Choi, Hei Sun/Lee, Min Woong/Lee, Youn Su/Shim, Jae Ouk/Kim, Myoung Jo
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Abstract
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Rhizoctonia solani [Thanatephorus cucumeris (frank) Donk], one of the major soilborne plant pathogens with world-wide distribution, can cause great damages on various crops. In Korea, sheath blight on rice caused by this pathogen is the major concern, and active studies on this pathogen have been performed. However, most of these studies were concerned with pathogenicity of the isolates instead of molecular analyses of different AGs of R. solani. Therefore, in this study, thirty isolates of Rhizoctonia solani collected from various sources were used for the analyses of genetic relationships among themselves and for the rapid anastomosis grouping with RAPD method. As a result, thirty isolates of known and unknown AGs were grouped into five subgrups and each group included AG-1, AG-2, AG-3, AG-4, and AG-5. RS-1 isolate was found to be closely realated to AG-5. Isolates RS-4, RS-14, RS-17, and RS-16 were found to be closely realated to AG-2-2(III B). Isolate RS-13 was closely related to AG-4, isolates RS-8 and RS-10 were closely related to AG-1(I B), and isolates RS-7 and RS-21 were closer related to AG-2-2(IV). Isolate RS-19 was closely related to AG-1(I C), and isolates RS-3, RS-5, RS-18, RS-6, and RS-15 were found to be closely related to AG-1.
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KEYWORD
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