{"created":"2023-05-15T13:37:58.935851+00:00","id":1716,"links":{},"metadata":{"_buckets":{"deposit":"636489cc-478a-4777-bafc-720fcc83a949"},"_deposit":{"created_by":12,"id":"1716","owners":[12],"pid":{"revision_id":0,"type":"depid","value":"1716"},"status":"published"},"_oai":{"id":"oai:repository.naro.go.jp:00001716","sets":["87:591:655:132:320"]},"author_link":["1191"],"item_10002_biblio_info_7":{"attribute_name":"書誌情報","attribute_value_mlt":[{"bibliographicIssueDates":{"bibliographicIssueDate":"2010-02-26","bibliographicIssueDateType":"Issued"},"bibliographicPageEnd":"112","bibliographicPageStart":"57","bibliographicVolumeNumber":"9","bibliographic_titles":[{"bibliographic_title":"野菜茶業研究所研究報告"},{"bibliographic_title":"Bulletin of the National Institute of Vegetable and Tea Science","bibliographic_titleLang":"en"}]}]},"item_10002_description_5":{"attribute_name":"抄録","attribute_value_mlt":[{"subitem_description":"In Japan, plug seedlings became popular from the middle of the 1990 s. Diseases of cabbage plug seedlings in a commercial nursery in Mie prefecture were investigated in 1997-99, soon after its foundation, then several years later in 2004-05. Our investigation found several new diseases of cabbage ; the causal agents were identified and conditions favouring disease occurrence were canvassed. Of these diseases, black sooty spot disease was found to be most damaging to seedlings, so it was decided to study the frequency of seed infestation with this pathogen as well as the effects of fungicides on the disease and the contribution of Ebb & Flow irrigation to suppression of the disease. New diseases found on cabbage plug seedlings were Choanephora rot, caused by Choanephora cucurbitarum, and bud blight caused by Fusarium avenaceum or Fusarium semitectum. Pythium megalacanthum and Pythium zingiberis were added to known causal agents of damping-off, and Pythium ultimum var. ultimum was identified as another causal agent of Pythium rot. Pythium megalacanthum showed greatest growth at 25℃, in the temperature range 5-40℃ , but it caused most damping off at 10℃ , between 10-35℃. Choanephora cucurbitarum and Pythium zingiberis grew well and caused disease symptoms at temperatures over 30℃. Pythium ultimum var. ultimum, and Fusarium spp. causing bud blight,showed greatest growth at 25℃ and were also most effective at this temperature in causing disease. In Mie prefecture, cabbage plug seedlings were cultivated from August to March. Sooty spot disease caused by Alternaria brassicicola was found to be most damaging to the seedlings. The disease, which is seed-borne, occurred over the whole cultivation period, but was particularly severe in the warm season from August to October. In the cool seasons from November to March, damping-off caused by Pythium megalacathum occurred frequently. Secondary infection by the disease was suspected, with an increase of damped-off seedlings in each plug tray. Damping-off caused by Pythium aphanidermatum occasionally expanded rapidly in the hot seasons. Downy mildew caused by Peronospora parasitica expanded rapidly from March, specifically those days when the highest temperature exceeded 15℃ .Diseases caused by Pythium zingiberis or Pythium ultimum var. ultimum were also observed, and different Pythium species caused disease under different temperature conditions. Three cultural types of Rhizoctonia solani caused daming-off, which transmitted only to neighboring seedlings. Isolates of the cultural types showed little difference in response to temperature. Other seed-borne diseases, such as black leg caused by Phoma lingam, bud blight by Fusarium spp. and leaf spot by Alternaria brassicae, occurred only a few times during the whole cultivation period and without secondary infection. Damping-off or seedling rot caused by Choanephora cucurbitarum occurred only in summer and secondary infection was not observed. Black rot caused by Xanthomonas campestris pv. campestris occurred in March and was suspected to be seed-borne. Diseases found on cabbage seedlings just after foundation of the nursery and those of several years later were similar, being mostly Alternaria sooty spot and Pythium spp. damping-off. Fungal infestation was investigated in commercial batches of cabbage seeds produced between 1984 and 2001. A total of 123 lots were divided into six groups by production periods (1984-1989, 1994-1998, and 2001) and by use or non-use of fungicides. One hundred seeds from each lot were incubated separately on agar at 25℃, to isolate the predominant fungus on each seed. Alternaria brassicicola was isolated most frequently, being found on 0-94% of the seeds, depending on seed lot, or on 6-21% of the seeds grouped by production period and fungicide treatment. The pathogen was isolated even from seeds refrigerated for 17 years. Alternaria brassicicola accounted for 57-95% of all isolated fungi by group and the rate was higher on older or fungicide-treated seeds. Seeds produced in Western Japan which had not been treated with fungicide, were infested with Alternaria brassicicola at rates of over 12%, higher than those for the eastern rgion (<4%) .The infestation was higher in warmer areas of Japan. Eighty-five isolates, other than Alternaria brassicicola, also produced spots on cabbage cotyledons after artificial inoculation. However, they were not isolated as frequently and were found on less than 5% of seeds in groups defined by production period and fungicide treatment. Most of these isolates were Alternaria alternata. Alternaria brassicicola conidia, on plug trays or applied onto soil, rarely caused sooty spot disease on cabbage plug seedlings.This suggests that plug trays and soil may not mediate the disease. Soil for plug seedlings is mainly composed of peat moss and, after sowing, is kept in humid conditions overnight to unify germination. If seeds contaminated with conidia of the pathogen were sown without this induction treatment, or if heaver soil than soil for plug seedlings was used, germination was hindered and disease on the seedlings became severe. Ebb & Flow system irrigation did not differ from overhead irrigation in terms of frequency of germination or diseased plugs from the contaminated seeds. However, Ebb & Flow system irrigation significantly decreased the frequency of infection and severity of symptoms after inoculation of the seedlings with conidia of the pathogen. The secondary infection was also suppressed with Ebb & Flow system irrigation. Procymidone, iprodione, tolclofos-methyl and a mixture of moncozeb and metalaxyl were effective for suppression of Alternaria sooty spot disease of cabbage, although those fungicides were not registered to be used on the disease in Japan. Growth inhibition of Alternaria brassicicola on media which included each of 19 fungicides was not consistent with suppression, by the same fungicides, of disease caused by the fungus on cabbage seedlings. Treatment with polyoxins of the seedlings and soil after sowing was effective for suppression of Alternaria sooty spot disease. So polyoxins were reg-istered in 2004 for use on cabbage in Japan. Hydroxyisoxazole was effective for protection of cabbage seedlings from damping-off caused by Pythium aphanidermatum.\n","subitem_description_type":"Abstract"}]},"item_10002_identifier_registration":{"attribute_name":"ID登録","attribute_value_mlt":[{"subitem_identifier_reg_text":"10.24514/00001670","subitem_identifier_reg_type":"JaLC"}]},"item_10002_publisher_8":{"attribute_name":"出版者","attribute_value_mlt":[{"subitem_publisher":"独立行政法人 農業・食品産業技術総合研究機構"}]},"item_10002_relation_14":{"attribute_name":"DOI","attribute_value_mlt":[{"subitem_relation_type":"isIdenticalTo","subitem_relation_type_id":{"subitem_relation_type_id_text":"10.24514/00001670","subitem_relation_type_select":"DOI"}}]},"item_10002_source_id_9":{"attribute_name":"ISSN","attribute_value_mlt":[{"subitem_source_identifier":"1346-6984","subitem_source_identifier_type":"ISSN"}]},"item_10002_version_type_20":{"attribute_name":"著者版フラグ","attribute_value_mlt":[{"subitem_version_resource":"http://purl.org/coar/version/c_970fb48d4fbd8a85","subitem_version_type":"VoR"}]},"item_creator":{"attribute_name":"著者","attribute_type":"creator","attribute_value_mlt":[{"creatorNames":[{"creatorName":"窪田, 昌春"},{"creatorName":"クボタ, マサハル","creatorNameLang":"ja-Kana"},{"creatorName":"KUBOTA, Masaharu","creatorNameLang":"en"}],"nameIdentifiers":[{"nameIdentifier":"1191","nameIdentifierScheme":"WEKO"},{"nameIdentifier":"10414674","nameIdentifierScheme":"e-Rad","nameIdentifierURI":"https://kaken.nii.ac.jp/ja/search/?qm=10414674"},{"nameIdentifier":"NARO-kubota-RM","nameIdentifierScheme":"researchmap","nameIdentifierURI":"http://researchmap.jp/NARO-kubota-RM"}]}]},"item_files":{"attribute_name":"ファイル情報","attribute_type":"file","attribute_value_mlt":[{"accessrole":"open_date","date":[{"dateType":"Available","dateValue":"2019-03-18"}],"displaytype":"detail","filename":"nivts_report_No9p57-112p.pdf","filesize":[{"value":"8.6 MB"}],"format":"application/pdf","licensetype":"license_note","mimetype":"application/pdf","url":{"label":"nivts_report_No9p57-112p.pdf","url":"https://repository.naro.go.jp/record/1716/files/nivts_report_No9p57-112p.pdf"},"version_id":"c50ee423-407c-444f-b1fe-6a8b4e6fdc0a"}]},"item_language":{"attribute_name":"言語","attribute_value_mlt":[{"subitem_language":"jpn"}]},"item_resource_type":{"attribute_name":"資源タイプ","attribute_value_mlt":[{"resourcetype":"departmental bulletin paper","resourceuri":"http://purl.org/coar/resource_type/c_6501"}]},"item_title":"キャベツのセル成型育苗において発生する病害とその防除に関する研究","item_titles":{"attribute_name":"タイトル","attribute_value_mlt":[{"subitem_title":"キャベツのセル成型育苗において発生する病害とその防除に関する研究"},{"subitem_title":"Diseases of Cabbage Plug Seedlings in Japan and Control of the Diseases","subitem_title_language":"en"}]},"item_type_id":"10002","owner":"12","path":["320"],"pubdate":{"attribute_name":"公開日","attribute_value":"2019-03-22"},"publish_date":"2019-03-22","publish_status":"0","recid":"1716","relation_version_is_last":true,"title":["キャベツのセル成型育苗において発生する病害とその防除に関する研究"],"weko_creator_id":"12","weko_shared_id":12},"updated":"2023-05-15T15:54:33.314034+00:00"}