メロンつる割病(<i>Fusarium oxysporum</i> f. sp. <i>melonis</i>)レース 1,2y に対する <i>Cucumis</i> 属野生種の抵抗性評価
書誌事項
- タイトル別名
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- Response of Wild Cucumis Species to Inoculation with Fusarium oxysporum f. sp. melonis Race 1,2y
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抄録
Fusarium wilt of melon (Cucumis melo L.), caused by Fusarium oxysporum f. sp. melonis, is regarded as a severe disease worldwide. Many resources that are resistant to races 0, 1, and 2 have been reported; nevertheless, no resource of high resistance to either race 1,2w or 1,2y has been reported, although partial resistance has been found. Wild Cucumis species have been reported as genetic resources which have resistance to some diseases and pests of melon. This study identified novel sources of high resistance to race 1,2y in wild Cucumis species. In all, we tested 76 accessions belonging to 11 wild species of the genus Cucumis. After artificial inoculation, the disease severity in each plant was evaluated using a 0–3 disease severity scale (0 = no symptoms, 1 = beginning of yellowing symptom on leaves, 2 = leaves strongly affected, 3 = plant death). The disease index (DI) was calculated as DI = summation of (disease severity × number of plants in that disease severity) × 100/(3 × total number of plants). Accessions showing high resistance (DI = 0) were 34 among six species: C. africanus, C. anguria, C. metuliferus, C. prophetarum, C. subsericeus, and C. zeyheri. By contrast, most accessions in C. dipsaceus, C. meeusei, C. pustulatus, and C. sagittatus exhibited high susceptibility (DI = 80–100). Among these four species, no accession showed high resistance. This is the first report of genetic resources having high resistance to race 1,2y. To introduce this high resistance of race 1,2y to melon, we should investigate methods to overcome reproductive barriers to interspecific crosses between melon and wild Cucumis species.<br>
収録刊行物
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- Journal of the Japanese Society for Horticultural Science
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Journal of the Japanese Society for Horticultural Science 80 (4), 414-419, 2011
一般社団法人 園芸学会
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詳細情報 詳細情報について
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- CRID
- 1390001205290255360
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- NII論文ID
- 130004951641
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- NII書誌ID
- AA12177046
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- ISSN
- 1882336X
- 18823351
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- NDL書誌ID
- 11277579
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- 本文言語コード
- en
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- データソース種別
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- JaLC
- NDL
- Crossref
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- 抄録ライセンスフラグ
- 使用不可