实验九 霉菌的形态观察与鉴定 (霉菌的无性孢子和有性孢子的形态观察) 一、教学要求 学习并掌握观察霉菌形态的基本方法。 二、实验原理 ⚫ 霉菌的形态 Molds are multinucleated, filamentous fungi composed of hyphae. A hypha is a branching, tubular structure from 2-10 µm in diameter and is usually divided into celllike units by crosswalls called septa. The total mass of hyphae is termed a mycelium
实验九 霉菌的形态观察与鉴定 (霉菌的无性孢子和有性孢子的形态观察) 一、教学要求 学习并掌握观察霉菌形态的基本方法。 二、实验原理 ⚫ 霉菌的形态 Molds are multinucleated, filamentous fungi composed of hyphae. A hypha is a branching, tubular structure from 2-10 µm in diameter and is usually divided into celllike units by crosswalls called septa. The total mass of hyphae is termed a mycelium
The portion of the mycelium that anchors the mold and absorbs nutrients is called the vegetative mycelium ; the portion that produces asexual reproductive spores is termed the aerial mycelium
The portion of the mycelium that anchors the mold and absorbs nutrients is called the vegetative mycelium ; the portion that produces asexual reproductive spores is termed the aerial mycelium
cell wall septum cytoplasmic endoplasmic membrane reticulum nuclear nucleus membrane mitochondria
Molds reproduce primarily by means of asexual reproductive spores such as conidiospores, sporangiospores, and arthrospores. These spores are disseminated by air, water, animals or objects and upon landing on a suitable environment, germinate and produce new hyphae . Molds may also reproduce by means of sexual spores such as ascospores and zygospores, but this is not common. The form and manner in which the spores are produced, along with the appearance of the hyphae and mycelium, provide the main criteria for identifying and classifying molds
Molds reproduce primarily by means of asexual reproductive spores such as conidiospores, sporangiospores, and arthrospores. These spores are disseminated by air, water, animals or objects and upon landing on a suitable environment, germinate and produce new hyphae . Molds may also reproduce by means of sexual spores such as ascospores and zygospores, but this is not common. The form and manner in which the spores are produced, along with the appearance of the hyphae and mycelium, provide the main criteria for identifying and classifying molds
分生泡子 次生小梗 初生小梗 顶囊 分生孢子梗 曲落 背落 (1) 囊托 孢囊梗 瓢娠裕 间阁枝 假根 (2)
aerial hypha (conidiophore) @回一@@四 vesicle conidiospores conidiospores stergmata
B
