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Appearance of race Pfs:5 of spinach downy mildew fungus, Peronospora farinosa f. sp. spinaciae, in Japan |
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| Authors: | Mamoru Satou Kazufumi Nishi Masaharu Kubota Michiko Fukami Hideaki Tsuji Kees van Ettekoven |
| Institution: | (1) National Agriculture and Bio-oriented Research Organization, Tsukuba, Ibaraki 305-8517, Japan;(2) National Institute of Vegetable and Tea Science, Mie, Japan;(3) Chiba Prefectural Agriculture and Forestry Promotion Center, Chiba, Japan;(4) Miyagi Prefectural Plant Protection Office, Sendai, Japan;(5) Naktuinbouw, Netherlands Inspection Service for Horticulture, Roelofarendsveen, Netherlands |
| Abstract: | The races for the causal agent of spinach downy mildew Peronospora farinosa f. sp. spinaciae were identified by inoculation of race-differential cultivars. One isolate was identified as Pfs:5s and the others belonged to a new race. This is the first report of race Pfs:5 and another new race in Japan. |
| Keywords: | Downy mildew Peronospora farinosa f sp spinaciae Race identification Spinach |
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