Selection of Canadian potato clones for tuber yield and fry quality in south of Brazil

The Brazilian potato chain regrets the lack of suitable cultivars for processing, especially with characteristics for the manufacture of frozen French fries. The objective of this work was to verify the yield potential of tubers and the quality of frying of Canadian potato clones for adaptation to South of Brazil. A set of 33 clones belonging to the Center de Recherche Les Buissons, QB, Canada, and cultivars Asterix, Atlantic and BRSIPR Bel were evaluated. The experiments were carried out in Pelotas-RS and Canoinhas-SC, in the spring season of 2016. The G x E interaction was significant for commercial tuber mass, total tuber numbers, total tuber mass, mean tuber mass and chip color, and nonsignificant for number of commercial tubers and specific gravity. In relation to mass of commercial tubers, the clones were grouped in two sets, in Canoinhas and in Pelotas, overcoming the three checks in the first, and only 'Atlantic' in the second. Regarding the frying quality, that is, specific gravity and chip color, ten clones were grouped with the checks for the specific gravity and simultaneously were in the upper group of chip color at both sites. The genotypes that better combined yield of commercial tubers and frying quality in Canoinhas were clones 16, 10, 19, 14, 27 and 15, and in Pelotas were the clone 10 and cultivars Atlantic, Asterix, and BRSIPR Bel. It was concluded that Canadian potato clones have high yield potential and frying quality for adaptation to south of Brazil.