Department of Plant Sciences, South Parks Road, University of Oxford, Oxford, OX1 3RB, UK.
Mol Plant Pathol. 2001 Nov 1;2(6):303-9. doi: 10.1046/j.1464-6722.2001.00084.x.
summary Pathogen: Powdery mildew fungus; Ascomycete although sexual stage is yet to be found; an obligate biotroph.
Superficial mycelium with hyaline hyphae; unbranched erect conidiophores; conidia, ellipsoid-ovoid or doliform, 22-46 x 10-20 microm, lack fibrosin bodies; conidia formed singly, rarely in short chains of 2-6 conidia; appressoria lobed to multilobed, rarely nipple-shaped. Pseudoidium species.
Broad, reported to attack over 60 species in 13 plant families, particularly members of the Solanaceae and Curcubitaceae.
Powdery white lesions on all aerial plant parts except the fruit. In severe outbreaks the lesions coalesce and disease is debilitating. Agronomic importance: Extremely common in glasshouse tomatoes world wide but increasing in importance on field grown tomato crops.
Chemical control and breeding programmes for disease resistance.
病原体：白粉病真菌；子囊菌，虽然尚未发现其有性阶段；专性活体营养生物。
表面菌丝为无色菌丝；无分枝直立分生孢子梗；分生孢子，椭圆形-卵形或哑铃形，22-46 x 10-20 微米，缺乏纤维蛋白体；分生孢子单独形成，很少形成 2-6 个分生孢子的短链；附着胞叶状至多叶状，很少呈乳突状。拟 Pseudoidium 种。
广泛，据报道攻击 13 个科的 60 多种植物，特别是茄科和葫芦科的成员。
所有气生植物部位（果实除外）出现白粉状病斑。在严重的疫情中，病斑融合，使植物衰弱。农艺重要性：在全世界的温室番茄中极为常见，但在田间种植的番茄作物中重要性日益增加。
化学防治和抗病性选育计划。
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