Growth analysis of potato genotypes

ABSTRACT Analyzes of plant growth throughout the crop vegetative cycle are important to know the dynamics of the plant development. [...]the objective of this work was to study the development of potato genotypes throughout the crop cycle, in three environments. The potato is of Andean origin, and the most cultivated species in the world, Solanum tuberosum ssp. tuberosum, was selected and adapted to European cultivation conditions and subsequently disseminated throughout the world, including Brazil. [...]it is better adapted to long photoperiods and, when cultivated under shorter daylength, as occurs in the main producing regions of Brazil, it presents a very short growing cycle, requiring a large amount of fertilizers to reach high yields (Silva et al., 2018a). [...]climate, soil and disease conditions found in the country's main potato producing regions are quite different from those prevailing in temperate regions (Silva et al., 2012; Moreira et al., 2015; Silva et al., 2018a). [...]the development and evaluation of cultivars more adapted to the Brazilian growing conditions are fundamental for the potato chain. Differences among genotypes and genotype-environment interactions by date of harvest were not significant for tuber mass, stem number and height of the tallest stem of each plant for Canoinhas and Pelotas (Tables 1 and 2). [...]for these traits a single regression equation was adjusted considering the mean value of the three genotypes.