The objective of this work was to assess heterosis and combining ability of tomato lines with high acylsugar (AS) content (group I) and lines with low AS (group II) used to produce AS-rich tomato hybrids. The trial was carried out at the seed production station of the HortiAgro Sementes Ltda., at Ijaci-MG. The genetic material consisted of six experimental hybrids obtained from crosses between three male parents with high AS (group I) and two female parents with low AS (group II). Average fruit weight (g fruit-1) and total yield (t ha-1) were the traits assessed. The AS-rich pest-resistant lines TOM-687 and TOM-688 showed positive estimates of general combining ability for average fruit mass and negative for yield, increasing fruit size, and reducing the yield of the hybrids. Unlike the two previous lines, TOM-689 presented negative estimates for fruit mass and positive for fruit yield. The data showed that it is feasible to get competitive hybrids from lines with AS sugar content. The best hybrids were produced when these lines were crossed with TOM-684.
Lycopersicon pennellii; hybrid vigor; allelochemicals
