pycnidium

The continuous light induced pycnidium formation.

在培养过程中，光能诱发分生孢子器形成。

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Symptoms of sunflower black stem disease at various periods were observed in the field; morphological observations of the colonies, pycnidium and conidia of the two pathogens and other sunflower parasitic pathogens were also observed and compared.

本文描述了向日葵黑茎病菌在大田危害症状和发生时各个时期症状表现，以及观察两种病原菌和向日葵上寄生的其他病原菌的形态特征，其中包括菌落、分生孢子器、分生孢子。

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The colonies had irregular edges, lack of melanin, significantly decreased sporulation; the pycnidium were relatively hard, rarely secretes mucus in the late of the growth.

菌落边缘不规则，缺少黑色索，产孢量明显减少，分生孢子器比较硬，在生长后期分泌的粘液很少。

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Pycnidium which has a round orifice at the top are black brown, global and 40-110 μ m in diameter.

分生孢子器黑褐色，球形，直径为40μm～110μm，器壁不突出，顶端有孔口，圆形。

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One strain of filamentous fungi possessing stronger resistance and accumulation abilities was screened from mine soil and numbered as phoma sp. F2. According to its characteristics of morphology being mainly the characteristics of pycnidium, it was identified as phoma fungi.

从矿区土壤筛选到一株对镉具有较强抗性和富集能力的丝状真菌，编号为F2，根据其形态主要是分生孢子器的特征鉴定为茎点霉菌。

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