Evaluation of families derived from backcrosses of processed tomato with dwarfism gene

Abstract

In comparison to tomato plants without the dwarfism gene, dwarf tomato plants were shorter, had a smaller canopy diameter and remained upright during maturation, thereby reducing the fruit-soil contact, resulting in healthier fruits. This study evaluated tomato families of a BC 1 F 3 population carrying the dwarf gene for industrial yield. The 150 BC 1 F 3 families and the two parents (hybrid H-9889 and accession BGH-9889) as controls were assessed in an augmented block design with four replications. The data were subjected to variance analysis and the F test. A selection index, based on the sum of ranks of Mulamba and Mock (1978), was used for the selection of genotypes, considering the most relevant traits, i.e., canopy diameter, yield, lodging and fruit firmness. Thus, selection resulted in a yield gain of 8.04%.

Artificial neural networks and genetic dissimilarity among saladette type dwarf tomato plant populations

“…In order to conduct the introgression of genes of interest for different types of biotic stress and fruit nutritional quality, and promote higher productivity, research with dwarf tomato plants has been intensified ( Maciel et al, 2015 , Finzi et al, 2017 , Finzi et al, 2020 , Cavasin et al, 2021 , Gomes et al, 2021 , Oliveira et al, 2022 ). The use of dwarf plants has provided multiple advantages, and obtaining saladette/roma dwarf tomato populations is a promising technology for the future development of higher yielding hybrids, similar to that observed with cherry/grape tomatoes ( Finzi et al, 2017 ).…”