Seleção de Linhagens de Tomate para o Trópico Úmido

Abstract

The objective of this study was to test eight advanced lines in the Amazon in two protected cultivation systems: i) in the Spodossolo and ii) in hydroponics (NFT), in order to select more productive lines with higher fruit quality than the cv. Yoshimatsu. Both experiments followed a randomized block design with three replications, 10 treatments (8 lines + Yoshimatsu-39 + Santa Cruz Kada) with ten plants per plot in the Spodossolo and five in the NFT. The morphological characteristics of the plants, agronomic characteristics and physicochemical characteristics of the fruit were evaluated. In order to select the most productive plants Annicchiarico adaptability and stability analyses were performed. The productivity results showed that five lines had Wi confidence coefficients higher than cv. Yoshimatsu-39 (Wi=77.6; 16.5 t ha-1); from the Caqui group P28-40-7 (Wi=147.4%, 27.7 t ha-1), from the Santa Cruz group P28-40-51 (Wi=95.0; t ha-1), from the Saladete group P28-4-21 (Wi=96.4; 24.7 t ha-1), P28-4-2 (Wi=84.9; 20.38 t ha-1) and P28-4-8 (Wi=83.7; 26.2 t ha-1). However, for the total soluble solids/citric acid ratio (TSS/CA), three lines had Wi higher than cv. Yoshimatsu-39 (Wi=89.2; TSS/CA=14.5); from the Santa Cruz group P28-40-51 (Wi=97.4; TSS/CA=12.3), from the cherry group P28-18-25 (Wi=96.3; TSS/CA=12.6) and P28-18-81 (Wi=100.9; TSS/CA=12.2). Thus, the five lines with the highest Wi for productivity can be recommended for the general market, and P28-18-25 and P28-18-81 would be more suitable for the gourmet market

Keywords: Solanum lycopersicum, Line test, Adaptability and stability, Spodosol, Amazon