Abstract
ABSTRACT The demand for cultivars suitable for processing, especially as frozen French fries, is increasing in Brazil. The Canadian expertise is high regarding the development of cultivars with processing characteristics; however, the growing conditions in Canada are quite different from those observed in Brazil. Thus, the aim of this work was to evaluate the performance of Canadian potato clones for their tuber yield, frying quality, plant vigor, and plant cycle, as potential new cultivars or to be used as a new source of variability for crosses. The experiments were conducted in Pelotas-RS and Canoinhas-SC, Brazil, in spring 2017. A set of 12 advanced Canadian potato clones from the Centre de Recherche Les Buissons, QB, Canada, were compared to three control cultivars used for processing. A randomized complete block design with three replicates, with two rows of 20 plants each per plot was used. Tuber yield, frying quality, plant vigor, and plant cycle traits were evaluated. Data were submitted to analysis of variance, grouping of means, and selection gains. It is possible to select genotypes with higher tuber yield and better frying quality, but it is difficult to add also a short cycle. In an attempt to select productive genotypes, with good frying quality, a not so long cycle, and vigor at least equivalent to the control cultivars, clones 15 and 16 were the best at both sites.
Highlights
A demanda por cultivares adequadas ao processamento industrial, principalmente na forma de palitos pré-fritos congelados, é crescente no Brasil
The Canadian expertise is high regarding the development of cultivars with processing characteristics; the growing conditions in Canada are quite different from those observed in Brazil in several aspects
It is known that long-cycle cultivars (>130 days) are more productive than short-cycle cultivars (
Summary
A demanda por cultivares adequadas ao processamento industrial, principalmente na forma de palitos pré-fritos congelados, é crescente no Brasil. The potato clones studied in this work were pre-selected in Quebec, Southeastern Canada, where cultivation is carried out in springsummer (May to September) In this period, the average photoperiod is between 16 and 18 h, and temperatures are between six and 30°C. Farmers prefer short-cycle cultivars, as they allow for more crops per year in the same area and have a shorter exposure to the weather and lower risk of diseases and pests. They can provide an early harvest depending on the market price
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