Potato is the most important crop in Peru and late blight is the main disease affecting the crop. However, new varieties that are resistant to late blight often lack other traits that farmers and consumers prefer. Using participatory varietal selection, this study seeks to identify clones with high potential to become varieties with resistance to late blight but also feature a high marketable tuber yield and other preferred agronomic traits. During 2016–2017, 36 clones previously selected for high levels of resistance to late blight from population B developed by the International Potato Center, and three varieties used as controls (INIA 302 Amarilis moderately resistant, INIA303 Canchan and Yungay susceptible to late blight), were evaluated in five Peruvian locations. At harvest, five clones were selected based on (i) evaluations made by farmers through Participatory Varietal Selection, (ii) analysis of mixed models and Best Linear Unbiased Predictors for tuber yield, (iii) low glycoalkaloid content in tubers, and (iv) good organoleptic quality. These clones were evaluated again during 2017–2018 in four locations. Resistance to late blight and good marketable tuber yields were identified as the most important criteria for the selection of a new potato variety. The clones CIP308488.92, CIP308495.227 and CIP308478.59 were selected as promising clones having resistance to late blight and tuber yield superior to the local varieties, INIA-303 Canchan, Yungay, as well as good organoleptic quality and low glycoalkaloid content. These clones can be suggested for variety release in similar agroecological environments.

马铃薯是秘鲁最重要的作物，晚疫病是影响作物的主要病害。然而，抗晚疫病的新品种往往缺乏农民和消费者喜欢的其他特征。使用参与性品种选择，本研究旨在确定具有高潜力的克隆，这些克隆具有成为具有晚疫病抗性但具有高可销售块茎产量和其他首选农艺性状的特点。在 2016-2017 年期间，先前从国际马铃薯中心开发的 B 种群中选择了 36 个对晚疫病具有高抗性的克隆，以及用作对照的三个品种（INIA 302 Amarilis 中等抗性、INIA303 Canchan 和 Yungay 对晚疫病敏感），在秘鲁的五个地点进行了评估。收获时，根据 (i) 农民通过参与性品种选择进行的评估，(ii) 分析混合模型和块茎产量的最佳线性无偏预测因子，(iii) 块茎中的低配糖生物碱含量，以及 (iv) 良好的感官品质，选择了五个克隆. 这些克隆在 2017-2018 年期间在四个地点再次进行了评估。抗晚疫病和良好的可销售块茎产量被确定为选择马铃薯新品种的最重要标准。选择CIP308488.92、CIP308495.227和CIP308478.59作为有前途的无性系，其抗晚疫病和块茎产量优于当地品种INIA-303 Canchan、Yungay，以及良好的感官品质和低配糖生物碱含量。这些克隆可以建议在类似的农业生态环境中进行品种发布。