Abstract
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.
Highlights
Seleção de clones chilenos de batata para rendimento de tubérculos, qualidade de fritura, vigor e ciclo vegetativo
The demand for potato cultivars for French fry processing is increasing in Brazil, due to changes in the eating habits of the population, which seeks more practical food products (Garcia et al, 2015)
There are few cultivar options suitable for this purpose. These factors, added to the narrow genetic base of the species (Solanum tuberosum), make it important to search for new cultivars, and for germplasm with the potential to add superior characteristics
Summary
Seleção de clones chilenos de batata para rendimento de tubérculos, qualidade de fritura, vigor e ciclo vegetativo. O objetivo do presente trabalho foi verificar o potencial produtivo, a qualidade de fritura, vigor de planta e ciclo vegetativo de clones chilenos de batata, visando identificar aqueles com potencial para se tornarem novas cultivares ou serem utilizados em cruzamentos. Foram avaliados caracteres de rendimento de tubérculos, de qualidade de fritura, além do vigor e ciclo vegetativo das plantas. In Chiloé region, due to the low temperature conditions, potato crop is carried out Horticultura Brasileira 38 (2) April - June, 2020 only from October to March In this period the average photoperiod is between 12 to 15 hours light, and temperatures between 7 and 20oC, but can vary from 1 to 30oC (Haverkort et al, 2014). Low reducing sugar content prevents browning during frying, which compromises the appearance and taste of the product (Garcia et al, 2015)
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