Selection of Chilean potato clones for tuber yield, frying quality, plant vigor and vegetative cycle

ABSTRACT The objective of this study was to evaluate the yield potential, frying quality, plant vigor, and vegetative cycle of Chilean potato clones, aiming to identify those with potential to become new cultivars or to be used in breeding programs. The experiments were conducted in Pelotas-RS and Canoinhas-SC, Brazil, in spring 2017. A set of 37 advanced potato clones belonging to the Agricultural Research Institute of Chile (INIA) was compared to commercial cultivars Agata, Asterix and Atlantic. A randomized complete block design with three replications of two rows with 10 plants each was used. Tuber yield, frying quality, plant vigor and vegetative cycle traits were evaluated. The data were submitted to analysis of variance, test for grouping means, and the selection differential. In this set of clones there are some presenting superior quality in relation to marketable tuber yield and frying quality, but the vegetative cycle was not shorter nor plant vigor was lower. Clones CH 27 and CH 44 were the best for marketable tuber yield and frying quality at both locations.

摘要 本研究旨在评估智利马铃薯无性系的产量潜力、油炸品质、植株长势及营养生长期，以期筛选出具备新品种培育潜力或可用于育种项目的优良无性系。试验于2017年春季在巴西南里奥格兰德州佩洛塔斯（Pelotas-RS）与圣卡塔琳娜州卡诺因哈斯（Canoinhas-SC）两地开展。供试材料为智利农业研究所（INIA）选育的37个高级马铃薯无性系，并以商业化品种Agata、Asterix及Atlantic作为对照。试验采用完全随机区组设计，设置3次重复，每个重复包含2行，每行种植10株植株。本试验测定的性状包括块茎产量、油炸品质、植株长势及营养生长期。对试验数据进行了方差分析、均值分组检验及选择差分析。结果表明，该批无性系中部分材料的商品块茎产量与油炸品质表现优异，但营养生长期未显著缩短，植株长势也未减弱。其中，无性系CH 27与CH 44在两个试验点均展现出最优的商品块茎产量与油炸品质表现。