03662nab a2200313 i 4500003000900000005001700009008004100026040001800067072001400085100002800099100002400127100002700151100002200178100003000200100002200230245011300252500006500365520118700430520127701617650001102894650003602905650002502941650001602966650001302982773024602995856008003241942000803321999001903329BR-BrBNA20250805213605.0250805b2022    bl.mr|pooa||| 00| 0 eng |  aBR-BrBNAbeng  aF30b1850  aOliveira, Camila S. de   aMaciel, Gabriel M.   aSiquieroli, Ana C. S.   aGomes, Danilo A.   aMartins, Marcos P. do C.   aFinzi, Rafael R.   aSelection of F2 RC1  saladette-type dwarf tomato plant populations for fruit quality and whitefly resistance  aPublicação on-line; 30 ref.; 4 tables; Sumaries (En, Pt)  a

ABSTRACT: This study aimed to select promising F2RC1 populations of saladette-type dwarf tomato plants for the development of breeding lines based on agronomic characteristics, fruit quality, and whitefly resistance. The experimental design was randomized blocks containing 13 treatments (10 F2 RC1  populations of dwarf tomato plants, both parents, and a commercial hybrid) with four replicates. The evaluations were performed included weight, length, diameter, shape, pulp thickness, number of locules, soluble solids, β-carotene, and lycopene concentration of the fruit; plant internode length; acylsugars concentration; and number of whitefly eggs, nymphs, and adults on the leaflets. The data were analyzed using ANOVA, selection indices, and multivariate analysis. The first backcross increased the agronomic characteristics of the populations in relation to the donor parent, especially for fruit weight (169.1%), fruit length (26.1%), and fruit diameter (16.6%). The UFU SDi 7, UFU SDi 9, and UFU-SDi 17 populations were selected using two selection indices and were therefore considered promising.

Key words: Solanum lycopersicum, dwarfism, backcrossing, plant breeding  a

RESUMO: O objetivo do estudo foi selecionar populações F2RC1 de tomateiro anão do tipo saladete promissoras para o desenvolvimento de linhagens baseado em características agronômicas, qualidade de fruto e resistência a mosca branca. O delineamento experimental foi em blocos casualizados contendo 13 tratamentos (10 populações F2 RC1 de tomateiro anão, genitores e híbrido comercial) com quatro repetições. Foram avaliados: peso, comprimento, diâmetro, formato, espessura da polpa, número de lóculos, teores de sólidos solúveis, β-caroteno e licopeno do fruto; comprimento do entrenó da planta; teores de acilaçúcares, número de ovos, ninfas e adultos de mosca branca nos folíolos. Os dados foram analisados por ANOVA, índices de seleção e análise multivariada. O primeiro retrocruzamento aumentou as características agronômicas das populações em relação ao genitor doador, principalmente para peso de fruto (169.1%), comprimento do fruto (26.1%) e diâmetro do fruto (16.6%). As populações UFU SDi 7, UFU SDi 9 e UFU-SDi 17 foram selecionadas por dois índices de seleção e são consideradas promissoras.

Palavras-chave: Solanum lycopersicum, nanismo, retrocruzamento, melhoramento de plantas  aTOMATE  aCARACTERÍSTICAS AGRONÔMICAS  aMELHORAMENTO VEGETAL  aSELEÇÃO  aLINHAGEM0 035349317817dCampina Grande-PB Universidade Federal de Campina Grande. Centro de Ciências e Tecnologia 1997o2024-4536tRevista Brasileira de Engenharia Agrícola e Ambiental (Brazil)x1415-4366gv. 26 (1 ) p. 28-35; (2022)wBR2025003505  uhttps://www.scielo.br/j/rbeaa/a/XMLgLsR8Rp3JJSXrVwnhn8R/?format=pdf&lang=en  cANA  c337474d337474