Tomato progenies selection in Rondônia, Brazil

Abstract

This study aimed to select endogamic progenies of tomato cv. Yoshimatsu and to conduct a progeny test in the state of Rondônia. The experiment was carried out in a randomized block design with four replicates and eight plants per plot, spacing 1x0.5 m, with one stem. A significant variation was observed among the fifteen progenies for productivity (2.0-5.5 kg plant-1), seed mass with placenta (18-31.5 g fruit-1), number of fruits per plant (18.8-38.7) and soluble solids (3.4-4.2°Brix). No significant variation was noticed for fruit size, pericarp thickness, number of locules, pH, number of flowers and fruit set, though. P6 progeny showed to be the most productive one (110 t ha-1): average fruit mass was 142.5 g, salad type tomato, 7.5 locules, 3.5°Brix, pH 4.2, 60.9 flowers per plant and 64.2% fruit set. Thus, these data show genetic variability of cultivar Yoshimatsu, being possible to obtain lines and/or cultivars with medium to large fruits adapted to the state of Rondônia.

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

“…The superiority in the size of the tomatoes of the BC 1 F 3 dwarf populations compared to those produced by the donor parent confirms the success of the breeding method used in this study. The increase in tomato fruit size is associated with increases in MW, TD, LD, PT, and NL ( Marques et al, 2019 , Tijskens et al, 2020 ). Similar results were observed by Finzi et al (2020) , who evaluated the same agronomic variables and reported the superiority of the BC 1 F 2 dwarf populations of round type tomatoes in relation to the dwarf donor parent belonging to the cherry/grape segment.…”