作者:曾惠中
類別:圖書文獻類 - 手稿
材質:紙質
年代:1969~1969
尺寸:長:24.6 x 寬:20.5 (cm)
藏品來源:曾惠中捐贈
登錄號:2019-001-0001-033
藏品描述:病菌在病株上的葉片、嫩梢、莢果上渡過不良環境,通過氣流傳播蔓延。相思樹3月份開始抽新葉,4月上、中旬感病嫩葉出現大量精子器和夏孢子堆,4月下旬盛產冬孢子堆,完成一個侵染週期約需15~20天。自4月上旬至12月止,病害可連續發生,一般4~6月最為嚴重,每次新葉抽出後,都有一個發病高峰,當溫度在17~28度時,最有利於病菌侵入相思樹幼嫩、半老嫩的葉、梢、果。
Causal organism: Endoraecium hyalosporum
Uredinia: on both phyllode surfaces, subepidermal on bullate swellings, round to ellipsoidal, bullate swellings up to 2 mm covered by uredinia, yellowish brown. Urediniospores: ellipsoidal, obovoid to oval, apex acute, reddish brown to brown. Telia: on both phyllode surfaces with uredinia on bullate swellings, dome-shaped, brown. Teliospores: cylindrical, ovoid to oval, apex rounded, hyaline to subhyaline. Basidiospores: globose, hyaline, 10-13 µm diameter.