Uma abordagem não destrutiva na fenotipagem de raízes de amendoim

Abstract

For peanut, although there are efforts that address the characterization of the architecture and robustness of its root system, most of these approaches are dependent on destructive and highly demanding procedures in manpower. In this sense, our puporse was to demonstrate the practicality, precision and possibility of non-destructive characterization in peanut roots. The root average diameter, root specific surface area, total root length and root volume of three cultivars and six advanced line which were developed by the Embrapa Breeding Program, and the Granoleico genotype were evaluated. The results obtained show that the cultivar BRS 421 OL showed the best balance between, root average diameter, total root length and root volume among evaluated genotypes (37% and 200% higher than the mean of the others evaluated genotypes, to total root volume and root length, respectively). This cultivar, showed a higher density of secondary and tertiary roots (thinner) in the lower third of its root system. The cultivars BRS 423 OL, BRS 425 OL and 18-2133 OL line stood out in relation to the average and require additional evaluation. Taking into account their superior performance for the root morphometric evaluated variables, the genotypes BRS 421 OL, BRS 425 OL and 18-2133 OL are already being cultivated under field conditions (2019/2020, growth season), where these variables will be evaluated aiming to confirm their initial performance.