Tomato plants exhibiting fruit with increased BRIX content are provided, together with methods of producing, identifying, or selecting plants or germplasm with an increased BRIX phenotype and lacking undesirable leaf necrosis. Such plants include tomato plants comprising introgressed genomic regions conferring increased BRIX without necrosis. Compositions, including novel polymorphic markers for detecting plants comprising introgressed alleles providing increased BRIX without necrosis, are further provided.