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首页> 外文期刊>Mycologia >Production of chlamydospores by Fusaria in onion (Allium cepa) bulb extract.
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Production of chlamydospores by Fusaria in onion (Allium cepa) bulb extract.

机译:Fusaria用洋葱鳞茎提取物中的Fusaria生产衣原体。

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Production of chlamydospores by F. oxysporum f.sp. ciceris, F. oxysporum f.sp. lini, F. oxysporum f.sp. lycopersici, F. oxysporum f.sp. pisi, F. semitectum [F. pallidoroseum], F. solani and F. udum on a cellophane disc on unsterilized sandy loam soil and acid washed sand saturated with onion (Allium) bulb extract was determined at different temp. and pH. Onion bulb extract enhanced the formation of chlamydospores from macroconidia of 7 species of Fusarium. Chlamydospore production from macroconidiaincubated on soil saturated with 0.1% (v/v) steam sterilized (autoclaved) bulb extract or with 0.01% (v/v) Millipore filtered bulb extract was significantly (P=0.05) greater than on sand. Chlamydospore formation was also significantly (P=0.05) higher inautoclaved bulb extract than in the extract sterilized by Millipore membrane filter. Chlamydospore initials were formed at max. frequency after 18 h of incubation and chlamydospore production reached a peak after 7 d incubation. Higher temp. (25-45degC) favoured chlamydospore production. Greatest production was at 35deg. Chlamydospore production was higher at pH 6-7 and was reduced significantly (P=0.05) beyond this range. The results indicate that onion bulb extracts significantly increase the chlamydospore production.
机译:尖孢镰刀菌生产的衣原体孢子。西塞里斯(F. oxysporum)莉妮,oxysporum f.sp. lycopersici,oxysporum f.sp. pisi,半角楼[F.在未灭菌的沙质壤土上的玻璃纸上,用不同温度测定用洋葱(葱属)鳞茎浸提液浸透的酸洗过的沙子。和pH值。洋葱鳞茎提取物增强了7种镰刀菌的大分生孢子中衣原体的形成。在用0.1%(v / v)蒸汽灭菌(高压灭菌)的鳞茎提取物或0.01%(v / v)Millipore过滤的鳞茎提取物饱和的土壤上孵育的大分生孢子产生的衣藻孢子的产量显着(P = 0.05)比在沙子上大。高压灭菌的鳞茎提取物中的衣原体孢子形成也显着高于经密理博膜过滤器灭菌的提取物中(P = 0.05)。衣原体的首字母形成最大。温育18小时后的频率和衣原体的产量在温育7天后达到峰值。更高的温度(25-45℃)有利于衣原体的生产。最高产量为35度。在pH 6-7时,衣原体的产量更高,超过此范围则显着降低(P = 0.05)。结果表明洋葱鳞茎提取物显着增加了衣原体的产量。

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