莴笋原产于地中海沿岸,属耐寒性蔬菜,又称茎用莴苣、青笋、千金菜等,是菊科莴苣属莴苣种能形成肉质嫩茎的变种,我国各地均有栽培.莴笋可食药两用,享有"春令莴笋似黄金"的美誉,是医生推荐的春季"千金菜". 随着栽培面积的不断扩大,莴笋病害的发生也日趋严重.霜霉病是莴笋生产中普遍发生的一种病害,该病流行性强、传播快、发病重、毁灭性强,对产量和品质影响极大,会导致菜农收入减少、种菜积极性下降.

百合炭疽病是我国百合产区的主要病害之一.本文综述了百合炭疽病病原菌的分类地位及其生物学特性,炭疽病的发病规律和致病因素、传播途径和综合防治等方面进展,总结了百合炭疽病研究上存在的问题,并展望了今后的研究方向.

The seedling plant inoculation and detached leaves inoculation methods was used to identify the disease resistance of melon powdery mildew in 10 melon cultivars which were grouped into three resistant levels such as susceptible cultivar, middle resistant cultivar and high resistant cultivar. The detached leaves inoculation methods had the same result with seedling plant. The disease index indicated that Qitian No.1, Longxin No.5, Yinmi, and Yucui belonged to susceptible cultivars, The disease index indicated that 3-2-2, Esteen, Topmark and Tianshuai belonged to middle resistant cultivars. The disease index indicated that 16H and N53 belonged to high resistant cultivars. The result of variance analysis was identical with the result of disease index. The variance of the same kind cultivars was not significant, but of different kind cultivars was significant.