Melhoramento participativo do tomateiro sob manejo orgânico

Abstract

The production and consumption of agricultural products derived from organic agriculture have expanded over the years. This agriculture model needs adapted genotypes to expand the production and meet the population expectation. The participatory breeding play a fundamental role in the development of cultivars that meet the needs of this organic model. The present study aimed to evaluate the performance of 12 inbred lines of tomato under two organic systems. The experiments were carried out at the Farm School of the Universidade Estadual de Londrina (UEL) (experiment I) and at a farm in the Guaravera district (experiment II), Londrina, Paraná State, Brazil. The following lines were evaluated: IPA-6 Super, Lignon, Viradoro, SPH92-434, Rimone, Massag-72, RG Angarten, Missouri91, TXL-1004, H1548, Rio Fuego and CTN. The experimental design used was randomized block with three replications. Six agronomic characters (number and average weight of marketable fruits, total production of marketable fruits, fruit wall thickness, length and fruit diameter) and four organoleptic characteristics (pH, soluble solids, acidity and ratio between soluble solids content and acidity) were evaluated. A wide variability among genotypes and environments studied was observed, and the experiment I was superior to II for characteristics related to yield. According to the results obtained, the H1548 inbred line can be recommended for organic production in the northern Paraná State.