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Difference of Gray Mold Severity at Roses Caused by Botrytis cinerea Strains
Res. Plant Dis. 2019;25:16-21
Published online March 31, 2019
© 2019 The Korean Society of Plant Pathology.

Kyu-Hyon Hwang 1* , Seung-Min Hong1, Young-Soon Lee2, Hyun-Ju Lee3, and Myeong-Whoon Seo1

1Division of Horticulture Research, Gyeonggido Agricultural Research & Extension Services, Hwaseong 18388, Korea, 2Mushroom Research Institute, Gyeonggido Agricultural Research & Extension Services, Gwang-ju 12805, Korea, 3Division of Environmental Agricultural Research, Gyeonggido Agricultural Research & Extension Services, Hwaseong 18388, Korea
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Received January 12, 2019; Revised March 26, 2019; Accepted March 26, 2019.
cc This is an open access article distributed under the terms of the Creative Commons Attribution Non-Commercial License (, which permits unrestricted non-commercial use, distribution, and reproduction in any medium, provided the original work is properly cited.
Botrytis cinerea is the pathogen for a gray mold generating problems during the cultivation and transportation of roses. But there is little information about the difference of the symptom severity caused by gray mold on rose varieties and pathogen strains. 16 strains were collected from the rose cultivation area to confirm the degree of disease occurrence against strains and each variety. Collected 16 strains were identified based on the sequences analysis of ITS region of ribosomal DNA by using specific primers. The sequence analysis was performed by comparing the sequences to find a difference. To confirm the difference in disease occurrence for each strains, the difference was classified from 0 to 5 stages using charmant variety as a control. The data was confirmed through Kruskal-Wallis ANOVA. The result showed the significant difference in the pathogenicity caused by strains. WNG6_5 showed the lowest pathogenicity with 0.24 and WNG6_3 showed the highest with 3.20. The difference between two strains were almost 3.0. In addition, nine varieties of roses were more investigated with three strains such as the strains of WNG6_5, Hwa_1, and WNG6_3. The result showed that the Love Letter variety showed resistance and the Ice Bear variety was sensitive to three strains. Taken together, this study showed the significant difference by the interactions of rose varieties and gray mold strains.
Keywords : Botrytis cinerea, Pathogenicity, Rose, Strain, Variety

March 2019, 25 (1)