VIRULENCE DIVERSITY OF RHIZOCTONIA SOLANI CAUSING SHEATH BLIGHT DISEASE IN RICE AND ITS HOST PATHOGEN INTERACTION
VIRULENCE DIVERSITY OF RHIZOCTONIA SOLANI CAUSING SHEATH BLIGHT DISEASE IN RICE AND ITS HOST PATHOGEN INTERACTION
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引起水稻纹枯病的立枯丝核菌毒力多样性及其宿主病原菌的相互作用
DOI：
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发表时间：
2013
期刊：
影响因子：
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通讯作者：
S. Meena
中科院分区：
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作者：
P. Adhipathi;Vineeta Singh;S. Meena
本研究对水稻纹枯病的抗性基因型和致病菌的毒力多样性进行了鉴定。黄瓜立枯病是由黄瓜丝核菌（RhizoctoniasolaniKuhn）引起的一种土传病害，是世界上最普遍、最具破坏性的土传病害之一。12 R。根据形态特征、菌核特征和致病力多样性，对10个不同水稻品种上的茄病分离物进行了收集和鉴定。根据第4、8、12和16天记录的病变长度，使用AUDPC值分析疾病进展和严重程度。根据AUDPC值评价，在10个水稻品种中，Sarju-52表现为高抗（19.91）而Jaya（21.87），普遍定期审议-2005-38（23.97）和IET-15182（23.16）对大多数供试菌株表现中等抗病反应;其中Pusa Basmati-1（46.57）表现为高度感病反应。在这些菌株中，一些菌株是高度和中度毒力，而大多数菌株的毒力较低。鉴定的抗性（Sarju-52）和感病（Pusa Basumati-1）是进一步开发水稻抗性品种的育种计划的潜在来源。
The present investigation is carried out for the identification of resistant genotypes of rice against sheath blight disease and virulence diversity among the isolates of pathogen. This disease is caused by Rhizoctonia solani Kuhn (Teleomorph: Thanatephorus cucumeris) is one of the most ubiquitous and destructive soil borne disease. The 12 R. solani isolates were collected and characterized based on morphological and sclerotial characters and virulence diversity on 10 different rice varieties. The disease progress and severities were analysed using AUDPC value on the basis of lesion length recorded on 4, 8, 12 and 16 DAI. Evaluation on the basis of AUDPC value, out of 10 varieties of rice, Sarju-52 depicted highly resistant (19.91) while Jaya (21.87), UPR-2005-38 (23.97) and IET-15182 (23.16) showed moderately resistant disease reaction with most of the isolates tested; where as the variety Pusa Basmati-1 (46.57) depicted highly susceptible disease reaction. Among these some isolates were highly and moderately virulent whereas most of the isolates were less virulent. The identified resistant (Sarju-52) and susceptible (Pusa Basumati-1) is the potential source for the breeding programmes for further development of resistant varieties in rice.