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霜霉病病癥原因

發布時間:2016/8/2 閱讀: 次 【字體:

由真菌中的霜霉科引起的植物病害。霜霉菌是專性寄生菌,極少數的霜霉菌已可人工培養。

引起谷子白發病的禾生指梗霉 (Sclerospora graminicola)、引起白菜霜霉病的寄生霜霉(Peronospora parasitica)。有的種存在不同的生理型,如引起萵苣霜霉病的萵苣盤梗霉(B.remiarlactucae)和引起黃瓜霜霉病的古巴假霜霉(Pseudoperonospora cubensis)。浩瀚農業權威技術人員研究總結常見的霜霉病除上述幾種外,還有甘蔗霜霉病、大豆霜霉病、葡萄霜霉病和黃瓜霜霉病。煙草霜霉病和黃瓜霜霉病等是毀滅性較大的病害。

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