Multi-environment testing at five locations for rust and late leaf spot (LLS) resistance with 41 introgressed lines (ILs) bred using marker-assisted backcross breeding in the genetic background Spanish-type groundnut varieties identified significant genotype, and genotype × environment interactions (GEI) for LLS disease resistance and yield parameters. Significant GEI effects suggest the need to identify location specific breeding lines to achieve gains in pod yield and LLS resistance. The observed variable LLS disease reaction among the ILs in part suggests influence of background genotype on the level of resistance. A breeding scheme with early generation selection using molecular markers followed by phenotyping for LLS, and multi-location testing of fixed breeding lines was optimized to enhance selection intensity and accuracy in groundnut breeding. The ILs, ICGVs 14431, 14436 and 14438 with pooled LLS score at 90 DAS of 3.5–3.7 were superior to respective recurrent parent for pod yield, with early maturing similar to recurrent parents. The pod yield advantage in ILs is attributed by more number of pods, besides resistance to LLS that contributes to better filling.

中文翻译：

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西班牙型花生（Arachis hypogaea L.）QTL基因渗入系中的G×E互作

在遗传背景中使用标记辅助回交育种培育的 41 个基因渗入品系 (ILs) 在五个地点对锈病和晚叶斑病 (LLS) 抗性进行多环境测试，西班牙型花生品种确定了显着的基因型和基因型 × 环境相互作用。 GEI) 用于 LLS 抗病性和产量参数。显着的 GEI 效应表明需要确定特定地点的育种品系，以提高豆荚产量和 LLS 抗性。ILs 中观察到的可变 LLS 疾病反应部分表明背景基因型对耐药水平的影响。使用分子标记进行早期世代选择的育种方案，然后对 LLS 进行表型分析，优化固定育种系多点试验，提高花生育种选择强度和精度。IL、ICGV 14431、14436 和 14438 在 90 DAS 的汇总 LLS 得分为 3.5-3.7，在豆荚产量方面优于各自的轮回亲本，早熟类似于轮回亲本。ILs 的豆荚产量优势归因于豆荚的数量更多，除了对 LLS 的抗性有助于更好地填充。