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首页> 外文期刊>Pest Technology >Comparative reaction of potato cultivars to Sclerotium rolfsii assessed by stem rot and tuber decay severity. (Special Issue: Potato pathology.)
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Comparative reaction of potato cultivars to Sclerotium rolfsii assessed by stem rot and tuber decay severity. (Special Issue: Potato pathology.)

机译：通过茎腐和块茎腐烂的严重程度评估了马铃薯品种对罗勒菌的比较反应。 （特刊：马铃薯病理学。）

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摘要

Experiments were conducted to evaluate the relative susceptibility of 11 local potato cultivars to Sclerotium rolfsii by using several stem and tuber disease parameters. Based on stem rot severity, noted three weeks post-inoculation, pathogen penetration, and percentage of rotten tissue, recorded after 8 days of incubation at 30 degrees C, none of the cultivars tested was resistant to S. rolfsii. However, there was a variable degree of susceptibility in which cultivar 'Tango' was found to be the most susceptible whilst 'Daisy' was the most tolerant to the disease. The most severe stem rot attributed to pathogen inoculation was observed, three weeks post-inoculation, on 'Tango' and 'Spunta' plants. For all cultivars combined, the percentage of rotten tuber tissue was related to the lesion diameter formed on the tuber surface and to the pathogen penetration.
机译：通过使用几种茎和块茎疾病参数，进行了实验，以评估11个当地马铃薯品种对罗氏菌的相对敏感性。根据茎腐病的严重程度（在接种后三周，病原体渗透和腐烂组织的百分数）（在30摄氏度的温度下培养8天后记录），所有受试品种均未对S. rolfsii产生抗性。但是，在易感程度方面，发现“ Tango”品种最易感，而“ Daisy”对这种病的耐受性最强。接种后三周，在“ Tango”和“ Spunta”植物上观察到归因于病原体接种的最严重的茎腐病。对于所有结合的品种，块茎组织变烂的百分比与在块茎表面形成的病斑直径和病原体的渗透有关。

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