Efficacy of Biocontrol Agent (BCA) Trichoderma spp. Against Black Scurf Disease (Rhizoctonia solani) of Potato

Plant Pathology Bulletin Pub Date : 2022-12-31 DOI:10.55627/pbulletin.001.01.0126

Zilli Huma

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Abstract

The current study was designed to determine the efficacy of Trichoderma against soil borne pathogen Rhizoctonia solani causing Black scurf disease in potato. Five various species of Trichoderma (Trichoderma herzianum, Trichoderma asperellum, Trichoderma viride, Trichoderma hamatum and Trichoderma helicum) were screened in vitro against Rhizoctonia solani via Dual culture technique. Amongst the antagonists Trichoderma herzianum, Trichoderma viride and Trichoderma helicum was found to be more potent in inhibiting the mycelial growth of Rhizoctonia solani. The results indicate that Trichoderma helicum and Trichoderma viride showed significant growth in suppressing the mycelial growth of Rhizoctonia solani thus a highest inhibition percentage 71.8% was attained however, the Trichoderma herzianum, Trichoderma asperellum and Trichoderma hamatum showed mycelial percentage of 71.45%, 68.2% and 64.5% respectively. It is therefore concluded that an insignificant inhibition percentage 64.5% was shown by Trichoderma hamatum and found to be least effective in reducing mycelial growth as well as sclerotia formation of the test pathogen Rhizoctonia solani. However Trichoderma is good biocontrol agent and therefore can be used against Black scurf disease of potato.

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生物防治剂木霉对马铃薯黑皮病的防治效果研究

本研究旨在确定木霉对马铃薯黑皮病土源性病原菌索拉根丝核菌的防治效果。采用双培养技术对5种不同种类的木霉(黑霉木霉、曲霉木霉、绿色木霉、黑霉木霉和螺旋木霉)进行了体外抑菌筛选。在拮抗剂中，黑丝木霉、绿色木霉和螺旋木霉对茄枯丝核菌菌丝生长的抑制作用较强。结果表明，螺旋木霉和绿色木霉对茄枯丝核菌菌丝生长的抑制作用显著，抑制率最高，为71.8%，黑霉木霉、曲霉木霉和哈木霉的抑制率分别为71.45%、68.2%和64.5%。结果表明，对番茄根丝核菌的抑制率为64.5%，对菌丝生长和菌核形成的抑制效果最差。而木霉是一种很好的生物防治剂，可以用来防治马铃薯黑皮病。

本文章由计算机程序翻译，如有差异，请以英文原文为准。

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Plant Pathology Bulletin

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