摘要
在ＰＳＡ上菌丝灰白色至灰褐色，部分菌株可产生黄色素渗入培养基。菌落生长５ｄ直径为５４～７０ｍｍ，最适生长温度为２３～２８℃，最适ｐＨ为６～８。菌株通常在ＰＳＡ上不产孢，但在玉米粉培养基上，经光照和变温处理，产孢较多。分生孢子在２５℃、湿润条件下萌发率较高。不同地区菌株间致病力有明显差异。
Some biologlcal and pathogenical characters of Alternaria solani (Ell.et Mart)Jones etGrout.on tomato in Jiangsu Province of China are reported in this paper.The hyphae on PSA were grey-white or grey-brown。 Some isolates could produce yellow pigment into media. The colonial diarneter was 54～70mm after the isolates were cultured for 5 days. Opt.temperature was 23 ～ 28℃ and opt. pH 6～8.They did not produce conidia on PSA in generall, but could form many conidia on cornmeal medium throughthe treatments of light and temperature-change. The conidia germinated very well under the condltions ofdampness and 25℃, There were differences in pathogenicity among the isolates from different regions.
出处
《江苏农学院学报》
CSCD
1994年第3期29-31,共3页
Jiangsu Agricultural Research
关键词
早疫病
真菌
生物学
番茄
致病力
early blight + fungi
biology
toniatoes/pathogenicity
