Spot blotch, an important foliar fungal disease caused by Bipolaris sorokiniana (Sacc.) Shoemaker [stat. anam.], is the influential production restraint over the global wheat-growing regions. A set of eight diverse wheat genotypes including a few breeding lines from Uttar Banga Krishi Viswavidyalaya and commonly accepted susceptible cultivars were screened for spot blotch disease and grain yield across five different locations in West Bengal, India, under environments for natural disease infestation in post-rainy seasons of 2018–2019 and 2019–2020. The present investigation revealed significant variation among the genotypes for spot blotch resistance in different environments as a result of genotype main effect and genotype environment interaction. This study also recorded two genotypes as resistant against spot blotch disease over the five locations. Identified resistant genotypes increased grain yield as a consequence of resistance offered against spot blotch disease suggesting the possibility of considering disease resistance as a must-have trait in all the wheat cultivars that could be identified for cultivation in the North-Eastern Plain Zone of India. Two genotypes resistant to spot blotch recorded 1.26–1.46 times higher grain yield over control under disease pressure that can be recommended for identification and exploited in a resistance breeding program for wheat spot blotch disease-prone region.

点斑病，一种由Bipolaris sorokiniana引起的重要叶真菌病（准确）鞋匠[统计。anam。]是对全球小麦种植地区的有影响的生产限制。在印度西部孟加拉的五个不同地区，在自然疾病侵袭后的环境中，对一组八种不同的小麦基因型进行了筛选，包括印度北方邦的几个育种系和普遍接受的易感品种的斑点斑点病和谷物产量。 2018–2019年和2019–2020年的雨季。本研究揭示了由于基因型主效应和基因型环境相互作用，不同环境中斑点抗性的基因型之间存在显着差异。这项研究还记录了在五个位置上对斑点斑点病具有抗性的两种基因型。鉴定出的抗性基因型是由于对斑点斑点病的抗性而增加了谷物的产量，这表明在所有可鉴定为在印度东北平原地区种植的小麦品种中，将抗病性视为必须具备的性状。在病害压力下，两种对斑点斑点具有抗性的基因型的单产比对照高1.26-1.46倍，可推荐用于鉴定和在小麦斑点斑点病易发地区的抗性育种计划中加以利用。