Selection and recommend of quinoa (Chenopodium quinoa) genotypes based on the yield genotypic adaptability and stability

ABSTRACT The present study aimed to select and recommend quinoa genotypes based on the yield genotypic adaptability and stability, by the method of the Harmonic mean of relative performance of genotypic values. Five experiments were conducted during the crop seasons of 2014 and 2015 in two locations in the Western region of Paraná State, Brazil. This study involved the evaluation of the yield of thirteen quinoa genotypes. Initially, the genotypic values (GV) were obtained by employing BLUP/REML methodology for mixed models. After, the values of the harmonic mean for genotypic value (HMGV*MG), the relative performance for genotypic values (RPGV*MG) and the harmonic mean of the relative performance for genotypic values (HMRPGV*MG) were obtained. The genotypes Q1317 and Q2014 were the best indicated for cultivation in the summer crop, with medium yield genotypic stability and adaptability. The genotype Q1318 is recommended for winter crop, presenting high yield genotypic stability and adaptability.

摘要 本研究旨在基于产量的基因型适应性与稳定性，借助基因型值相对性能的调和均值法，筛选并推荐藜麦（quinoa）基因型。2014至2015年作物季期间，在巴西巴拉那州西部地区的两个试验点共开展了5组试验。本研究对13个藜麦基因型的产量表现进行了评价。首先，采用混合模型的最佳线性无偏预测/限制性最大似然估计（BLUP/REML，Best Linear Unbiased Prediction/Restricted Maximum Likelihood）方法获取基因型值（GV）。随后，依次计算得到基因型值调和均值（HMGV*MG）、基因型值相对性能（RPGV*MG）以及基因型值相对性能的调和均值（HMRPGV*MG）。结果显示，基因型Q1317与Q2014为夏播栽培的最优推荐品种，其产量基因型稳定性与适应性处于中等水平；基因型Q1318适用于冬播栽培，具备较高的产量基因型稳定性与适应性。