Root rot disease complex attributed to Meloidogyne incognita and Rhizoctonia bataticola is a serious threat to cotton in areas having warm climate. In this study, the impact of M. incognita and R. bataticola interaction was assessed at different levels of resistance and susceptibility in cotton. M. incognita and R. bataticola were inoculated on various cotton varieties, alone and in combination. Variety CRS-134 showed high resistant against R. bataticola after individual inoculation with 1.7 disease severity ratings (5–10% infection) whereas varieties FH-4243, MNH-554 and FH-183 were moderately resistant with 2.2, 2.1 and 2.4 disease severity ratings, respectively. Inoculation of M. incognita and R. bataticola in combination significantly enhanced the root rot severity in cotton. Results showed that in the presence of both M. incognita and R. bataticola, the disease severity increased to 6.2 in CRS-134, 4.9 in FH-4243, 5.9 in MNH-554 and 3.6 in FH-183. Hence, the synergistic effect of M. incognita and R. bataticola has drastic impact on cotton and could be minimized using resistant varieties..
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机译：归因于Meloidogyne Incognita和Rhizoctonia Batatocatola的根腐病复合物是对温暖气候的地区的棉花严重威胁。在这项研究中，在棉花的不同抗性和易感性水平评估了M. Incognita和R.Batatactola相互作用的影响。 M. Incognita和R.Bataticola在各种棉花品种，单独和组合地接种。随着1.7疾病严重程度评级（5-10％感染），各种接种后，各种CRS-134对R. BataTicola的耐高抗性抗蝙蝠丸子均显示出较大的FH-4243，MnH-554和FH-183与2.2,2.1和2.4疾病严重程度适度抵抗评级分别。接种M. Incognita和R.Batatacola组合的显着增强了棉花的根腐败严重程度。结果表明，在M.Incognita和R.Batatocola的存在下，CRS-134,4.9中的疾病严重程度增加到6.2，在FH-183中的5.9中的5.9例。因此，M. Incognita和R.Bataticola对棉花的巨大影响，可以使用抗性品种最小化。
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