Parents and 318 F8 recombinant inbred lines (RILs) derived from the cross, TAG 24 × ICGV 86031 were evaluated for peanut bud necrosis disease (PBND) resistance and agronomic traits under natural infestation of thrips at a disease hotspot location for 2 years. Significant genotype, environment and genotype × environment interaction effects suggested role of environment in development and spread of the disease. Quantitative trait loci (QTL) analysis using QTL Cartographer identified a total of 14 QTL for six traits of which five QTL were for disease incidence. One quantitative trait locus q60DI located on LG_AhII was identified using both QTL Cartographer and QTL Network. Another QTL q90DI was detected with a high PVE of 12.57 using QTL Cartographer. A total of nine significant additive × additive (AA) interactions were detected for PBND disease incidence and yield traits with two and seven interactions displaying effects in favour of the parental and recombinant genotype combinations, respectively. This is the first attempt on QTL discovery associated with PBND resistance in peanut. Superior RILs identified in the study can be recycled or released as variety following further evaluations.

中文翻译：

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重组自交系 (RIL) 群体中与花生芽坏死病 (PBND) 抗性相关的基因组区域

对亲本和 318 个 F8 重组自交系 (RIL) 来自杂交、TAG 24 × ICGV 86031 进行了花生芽坏死病 (PBND) 抗性和蓟马自然侵染下疾病热点位置 2 年的农艺性状评估。显着的基因型、环境和基因型×环境相互作用效应表明环境在疾病发展和传播中的作用。使用QTL Cartographer进行数量性状位点（QTL）分析，共鉴定出6个性状的14个QTL，其中5个QTL与发病率有关。使用 QTL Cartographer 和 QTL Network 鉴定了位于 LG_AhII 上的一个数量性状基因座 q60DI。使用 QTL Cartographer 检测到另一个 QTL q90DI，其 PVE 为 12.57。对于 PBND 发病率和产量性状，总共检测到九个显着的加性×加性（AA）相互作用，其中两个和七个相互作用分别显示出有利于亲本和重组基因型组合的影响。这是首次尝试发现与花生PBND抗性相关的QTL。研究中确定的优质 RIL 可以在进一步评估后作为品种回收或释放。