Efforts are being made to develop chickpea varieties with resistance to the pod borer, Helicoverpa armigera for reducing pesticide use and minimizing the extent of losses due to this pest. However, only low to moderate levels of resistance have been observed in the cultivated chickpea to this polyphagous pest. Hence, it is important to explore wild relatives as resistance sources to develop insect-resistant cultivars. Therefore, we studied different biochemical components that confer resistance to H. armigera in a diverse array of wild relatives of chickpea. Accessions belonging to wild relatives of chickpea exhibited high levels of resistance to H. armigera as compared to cultivated chickpea genotypes in terms of lower larval survival, pupation and adult emergence, decreased larval and pupal weights, prolonged larval and pupal developmental periods and reduced fecundity of the H. armigera when reared on artificial diet impregnated with lyophilized leaf powders. Amounts of proteins and phenols in different accessions of chickpea wild relatives were significantly and negatively correlated with larval weight, pupation and adult emergence. Phenols showed a negative correlation with pupal weight and fecundity, but positive correlation with pupal period. Total soluble sugars showed a negative correlation with larval period, but positive correlation with pupation and pupal weight, while tannins showed a positive correlation with larval weight, pupation and adult emergence. The flavonoid compounds such as chlorogenic acid, ferulic acid, naringin, 3,4-dihydroxy flavones, quercetin, naringenin, genistein, biochanin-A and formononetin that were identified through HPLC fingerprints, exhibited negative effects on survival and development of H. armigera reared on artificial diet impregnated with lyophilized leaf powders. The wild relatives with diverse mechanisms of resistance conferred by different biochemical components can be used as sources of resistance in chickpea breeding programs to develop cultivars with durable resistance to H. armigera for sustainable crop production.

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鹰嘴豆野生近缘种的生化成分赋予对荚bore的抗药性

人们正在努力开发对豆荚bore，棉铃虫具有抗性的鹰嘴豆品种，以减少农药的使用并最大程度地减少这种害虫造成的损失。然而，在栽培鹰嘴豆中，仅观察到了对这种多食性害虫的低至中等水平的抗性。因此，重要的是探索野生近缘植物作为抗药性来源，以发展抗虫品种。因此，我们研究了在不同种类的鹰嘴豆野生亲属中赋予棉铃虫抗药性的不同生化成分。属于鹰嘴豆野生近缘种的种质表现出对棉铃虫的高水平抗性与栽培鹰嘴豆基因型相比，幼虫存活率低，化up和成虫出现，幼虫和p重量减少，幼虫和p发育期延长以及棉铃虫的繁殖力降低当以人工饮食饲养时，将其浸入冻干的叶粉中。鹰嘴豆野生近缘种不同种质中蛋白质和酚的含量与幼虫体重，化up和成虫的出现呈显着负相关。苯酚与p的体重和生殖力呈负相关，而与period期呈正相关。总可溶性糖与幼虫期呈负相关，但与化up和p重呈正相关，而单宁与幼虫体重，化ation和成年出苗呈正相关。通过HPLC指纹图谱鉴定出的类黄酮化合物，例如绿原酸，阿魏酸，柚皮苷，3,4-二羟基黄酮，槲皮素，柚皮苷，染料木黄酮，biochanin-A和formononetin，对它们的存活和发育表现出负面影响棉铃虫以人工饮食饲养，并用冻干的叶粉进行饲养。由不同生化成分赋予不同抗性机制的野生近缘种可以用作鹰嘴豆育种计划的抗性来源，以开发对棉铃虫具有持久抗性的品种，以实现可持续的作物生产。