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韭菜(黄)黑根病的诊断与防治
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作者 李省印 《西北园艺(果树)》 2001年第3期42-42,共1页
1 症状及病原 该病主要为害茎基叶鞘和韭黄罐顶叶梢。受害部位初为褐色或淡褐色腐烂,之后可见棉絮状菌丝缠绕或结块;中后期在外层叶鞘与新生叶之间形成黄褐色或黑褐色菜籽状多层小菌核,严重时在簇内每株的根上、茎下周围结成筒状黑色菌... 1 症状及病原 该病主要为害茎基叶鞘和韭黄罐顶叶梢。受害部位初为褐色或淡褐色腐烂,之后可见棉絮状菌丝缠绕或结块;中后期在外层叶鞘与新生叶之间形成黄褐色或黑褐色菜籽状多层小菌核,严重时在簇内每株的根上、茎下周围结成筒状黑色菌核厚痂。 展开更多
关键词 韭菜 黑根病 黄根病 症状 大蒜核盘菌 传播途径 综合防治
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Potential of the Integrated Control of Cucumber Root Rot Using Natural, Biological and Chemical Methods
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作者 Mohamed El Khaleely Barakat Abdel Radi Taher Bakeer Wallaa Fathy Mostafa 《Journal of Life Sciences》 2011年第2期143-156,共14页
Over the few last years, cucumber (Cucumis sativus L) root rot disease became common and inflicted marked losses to yield in Fayoum. Isolation trails from infected cucumber roots revealed that Thielaviopsis basicola... Over the few last years, cucumber (Cucumis sativus L) root rot disease became common and inflicted marked losses to yield in Fayoum. Isolation trails from infected cucumber roots revealed that Thielaviopsis basicola and Fusarium moniliforme were the main cucumber root rot pathogens. The isolation trials from the rhizosphere of healthy cucumber plants revealed that two fungal isolates and four bacterial isolates had antagonistic effects against cucumber root rot fungi. All the tested biocontrol agents reduced the radial growth of all the tested root rots fungi in dual cultures. However, all culture filtrates of the tested biocontrol agent significantly reduced radial growth of all the tested pathogenic fungi, except that T. harzianum. Under field conditions, soil treatment with any of T. harzianum and B. subtilis BI and BF, significantly reduced percentages of infected plants and significantly increased percentages of survived plants and fruit yield compared with the control. Application of the commercial product Harpin protein (Messenger)~ product, as a resistance inducer at 0.3, 0.5 and l g/L significantly reduced the percentage of infected plants under greenhouse and field conditions. Field experiments indicated that the average percentage of infected plants after 90 days significantly decreased. The percentage of the survived plants as well as fruit yield increased by using integrated disease management (IDM) package, including the most effective treatments: tolerant cultivar, Trichoderma harzianum granules formula as soil treatment, Purging cassia plant extract, Harpin protein, and a half dose of Vitavax/thiram comparing with the treatment recommended by the Ministry of Agricultural or applied treatments individually. 展开更多
关键词 CUCUMBER root rots biological control formulations induced resistance integrated control
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Arbuscular Mycorrhizal Fungal Inoculation Enhances Suppression of Cucumber Fusarium Wilt in Greenhouse Soils 被引量:27
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作者 HU Jun-Li LIN Xian-Gui WANG Jun-Hua SHEN Wei-Shou WU Shu PENG Su-Ping MAO Ting-Ting 《Pedosphere》 SCIE CAS CSCD 2010年第5期586-593,共8页
A pot experiment was conducted to study the plant growth and fruit yields of cucumber (Cucumis sativus L.) on a greenhouse soil with or without inoculation of arbuscular mycorrhizal fungi (AMFs) and Fusarium oxysp... A pot experiment was conducted to study the plant growth and fruit yields of cucumber (Cucumis sativus L.) on a greenhouse soil with or without inoculation of arbuscular mycorrhizal fungi (AMFs) and Fusarium oxysporum f. sp, cucumerinum under unsterilized conditions. Two AMF inocula were tested: only one AMF strain Glomus caledonium 90036 and an AMF consortium mainly consisting of Glornus spp. and Acaulospora spp. There were four treatments including no inoculation (control), inoculation with F. oxysporum but without mycorrhizae (FO), inoculation with F. oxysporum and G. caledonium (FO+M1), and inoculation with F. oxysporum and the AMF consortium (FO+M2). Cucumber plants were harvested at weeks 3 and 9 after transplanting. Compared with the control, the FO treatment without AMF inoculation had less biomass both at weeks 3 and 9 (P 〈 0.05) and had higher incidence of Fusarium wilt and produced no cucumber fruit at week 9. Both FO+M1 and FO+M2 treatments had higher mycorrhizal colonization than the treatments which received no AMF inoculation at week 3 (P 〈 0.05), but only the FO+M2 treatment elevated plant biomass, decreased the incidence of Fusarium wilt, and improved cucumber yields to the same level as the control at week 9. The results indicated that the AMF consortium could suppress Fusarium wilt of cucumber and, therefore, showed potential as a biological control agent in greenhouse agroecosystems. 展开更多
关键词 AMF consortia Fusarium oxysporum f. sp. cucumerinum soil-borne disease wilt plant death
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