| 寡雄腐霉重寄生作用的研究 |
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| 引用本文： | 贺水山,张炳欣.寡雄腐霉重寄生作用的研究[J].植物病理学报,1992,22(1):77-82. |
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| 作者姓名： | 贺水山 张炳欣 |
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| 作者单位： | 1. 洪州动植物检疫服务;2. 浙江农业大学 |
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| 摘 要： | 通过室内筛选和盆栽测定证明:寡雄腐霉(Pythium oligandrum)对Rhizoctoniasolanl AG-4,P.ultimum,P.spinosum和P.irregulare有抗生作用,其中以P.oligandr-um的卵孢子处理番茄种子对P.ultimum和P.solani AG-4引起的种腐,猝倒防治效果较好,防效分别为79.4%和63.6%。P.oligandrum对R.solani AG-4主要以菌寄生为主,菌丝能大量分枝侵入,而对P.ultimum主要以抗生为主,分泌出胞壁溶解物质溶解其菌丝。
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| 关 键 词： | 寡雄腐霉 重寄生作用 |
ON THE ANTOGONISM BY HYPERPARASITE PYTHIUM OLIGANDRUM |
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| He Shuishan,Zhang Biangxing,Ge Qixin.ON THE ANTOGONISM BY HYPERPARASITE PYTHIUM OLIGANDRUM[J].Acta Phytopathologica Sinica,1992,22(1):77-82. |
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| Authors: | He Shuishan Zhang Biangxing Ge Qixin |
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| Institution: | 1. Hongzhou Animal and Plant Quarantine Service;2. Zhejiang Agricultural University |
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| Abstract: | Screening in laboratory and testing in pot planting proved that P.oligandrum was antogonistic against R.solani AG-4,P.ultimum,P.spinosum and P.irregulare.Treating tomato seed with oospores of the P.oligandrum resulted in effective reduction of 79.4% and 63.6% seed rot and damping-off induced by P.ultimum and R.solani AG-4.P.oligandrum was principally parasitic on R.solani AG-4 and it's hyphae greatly branched and penetrated the hyphae of R.solani AG-4.However,P.oligandrum was antibiotic to P.ultimum only with releasing substances to dissolve the hyphae of the latter. |
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