Genetic enhancement for resistance against the pod borer, Helicoverpa armigera is crucial for enhancing production and productivity of chickpea. Here we provide some novel insights into the genetic architecture of natural variation in H. armigera resistance in chickpea, an important legume, which plays a major role in food and nutritional security. An interspecific recombinant inbred line (RIL) population developed from a cross between H. armigera susceptible accession ICC 4958 (Cicer arietinum) and resistant accession PI 489777 (Cicer reticulatum) was evaluated for H. armigera resistance component traits using detached leaf assay and under field conditions. A high‐throughput AxiomCicerSNP array was utilized to construct a dense linkage map comprising of 3,873 loci and spanning a distance of 949.27 cM. Comprehensive analyses of extensive genotyping and phenotyping data identified nine main‐effect QTLs and 955 epistatic QTLs explaining up to 42.49% and 38.05% phenotypic variance, respectively, for H. armigera resistance component traits. The main‐effect QTLs identified in this RIL population were linked with previously described genes, known to modulate resistance against lepidopteran insects in crop plants. One QTL cluster harbouring main‐effect QTLs for three H. armigera resistance component traits and explaining up to 42.49% of the phenotypic variance, was identified on CaLG03. This genomic region, after validation, may be useful to improve H. armigera resistance component traits in elite chickpea cultivars.

中文翻译：

---

鹰嘴豆（Cicer arietinum L.）荚果蛀虫抗性成分性状的致密遗传图谱和QTL分析

针对该食心虫性遗传改良，棉铃虫是提高生产和鹰嘴豆的效率是至关重要的。在这里，我们提供了对鹰嘴豆中棉铃虫抗药性的自然变异的遗传结构的一些新颖见解，鹰嘴豆是一种重要的豆类，在食品和营养安全中起着重要作用。从之间的交叉开发的种间重组自交系（RIL）群体棉铃虫易感加入ICC 4958（鹰嘴豆）和抗性加入PI 489777（鹰嘴豆网藻），用于评价棉铃虫使用离脱叶测定法和下字段电阻成分的性状情况。高通量公理CicerSNP阵列用于构建包含3,873个基因座，跨距949.27 cM的密集连锁图。对大量基因分型和表型数据的综合分析确定了9个主要效应QTL和955个上位QTL，分别解释了棉铃虫抗药性组分性状分别高达42.49％和38.05％的表型变异。在此RIL群体中鉴定出的主要效应QTL与先前描述的基因相关，已知该基因可调节农作物对鳞翅目昆虫的抗性。在CaLG03上鉴定出一个QTL簇，它具有三个棉铃虫抗性成分特征的主要效应QTL，并解释了高达42.49％的表型变异。验证后，该基因组区域可能有助于改善精英鹰嘴豆品种中的棉铃虫抗性成分性状。