Genotypic selection of advanced potato clones by REML/BLUP

ABSTRACT Potato genotypes were evaluated in their performance, according to the genotype values for tuber yield traits. The experiments were carried out in Canoinhas and Pelotas, Brazil, in spring 2014. Eleven advanced clones and two commercial cultivars (Agata and Asterix) (check cultivars) were evaluated. A randomized complete block design with four replicates was used. Plots were harvested 110 days after planting, and evaluated for tuber yield components. The data were submitted to joint deviance analyzes using the REML/BLUP method. Clones F102-22-07 and F32-02-06 stood out positively for tuber yield. F102-22-07 showed high marketable tuber yield and average tuber weight, while clone F32-02-06 exhibited high marketable and total tuber yield. The superiority of these advanced clones in relation to the check cultivars, suggests their potential to be evaluated in other environments, aiming their release as new cultivars.

摘要：本研究基于块茎产量相关性状的基因型值，对马铃薯基因型的田间表现开展评价。试验于2014年春季在巴西的卡诺因哈斯（Canoinhas）与佩洛塔斯（Pelotas）两地进行。供试材料包含11个优良无性系及2个商业栽培品种（Agata与Asterix，作为对照品种），采用设置4次重复的随机完全区组设计。于播种后110天收获小区植株，并测定块茎产量构成因子。采用限制性极大似然估计/最佳线性无偏预测（REML/BLUP）法对试验数据开展联合偏差分析。结果显示，无性系F102-22-07与F32-02-06在块茎产量性状上表现突出：其中F102-22-07的商品块茎产量与平均块茎重量均处于较高水平；无性系F32-02-06的商品块茎产量与总块茎产量均表现优异。相较于对照品种，这两个优良无性系具备显著优势，表明其具备在其他环境下进一步开展试验评价的潜力，有望作为新品种完成审定与推广。