园林花卉真菌病害研究之六

STUDIES ON THE FUNGOUS DISEASES OF ORNAMENTAL AND FLORAL PLANTS(VI)

本文报道14种园林花卉植物上12种真菌病害,其中国内新记录5种,国内新寄主植物2种,省内新寄主植物6种,全部种有描述,新记录种附病原图,全部病害按病名、学名、寄主、发病期、分布为害、症状与病原叙述,以供科研、教学、生产上参考。

This paper is a part of research project on ornamental and floral plant diseases in China supported by National Natural Science Foudation of China.Twelve fungous dis- eases on fourteen species of garden trees and flowers collected from Kunming,Chongqing and other places were listed.Among them,five diseases were reported for the first time in China and two host plants were reported for the first time in China and six host plants were reported for the first time in Yunnan Province and Chongqing City.The morphological characteristics of each species are described and some of them are illustrated.Specimen are deposited in Mycological Herbarium of the Plant Pathology Institute of Yunnan Agricul- tural University (MHYAU),Kunming. Five of them are new records of known species in China,i.e.1.Alternaria ramulosa (Sacc.) Toly causing spot blight on Cordyline stricta,distribution Kunming Oct.1988 common.2.Diplodina acerina (Pass.) Sutton causing stem blight on Homalocladium platycladium,distribution Chongqing Sept.1985 occasional.3.Macrophoma falconeri P.Henn.causing spotted wilt on Ficus microcarpa,distribution Chongqing Sept.1985 common,and causing spotted wilt on Hoya cinnamomi,distribution Kunming Apr.1988 occasional.4.Hendersonia culmiseda Sacc.causing leaf spot on Machilus yunnanensis , distribution Kunming Nov.1985 common,and 5.Stigmina deflectens (Kart.) M.B.Ellis causing spot blight on Magnolia grandiflora,distribution Kunming Apr.1981 occasional.