Tomato genotypes with determinate growth and high acylsugar content presenting resistance to spider mite

Maciel, Gabriel Mascarenhas; Marquez, Guilherme Repeza; Andaló, Vanessa; Belloti, Igor Forigo

doi:10.1590/1984-70332018v18n1a1

Cited by 10 publications

(4 citation statements)

References 21 publications

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“…In the present study, achieving higher lycopene and soluble solids content was made possible by the genetic variation of the genotypes, without requiring more complex biotechnological techniques that involve gene manipulation. Lucini et al, 2015;Rakha et al, 2017;Maciel et al, 2018a;Peixoto et al, 2019;Peixoto et al, 2020). In this study, the wild tomato S.pennellii had high contents of the acylsugar allelochemical (mean of 36.66 nmol cm -2 of leaf area), as was expected (Figure 3).…”

Section: Resultssupporting

confidence: 83%

Agronomic potential, pest resistance, and fruit quality in BC1F3 dwarf round tomato populations

et al. 2022

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Combining broad pest resistance, high yield, and nutritional quality of fruit in the same hybrid is a challenge for round tomato breeders. Thus, development of a dwarf round tomato line for obtaining hybrids may be an excellent alternative for achieving such objectives. The aim of this study was to evaluate the agronomic potential, fruit quality, and pest resistance of BC1F3 dwarf round tomato populations. We evaluated 13 treatments and 4 replications. Treatments consisted of 10 BC1F3 dwarf populations originating from self-fertilization of dwarf populations selected in BC1F2, plus both parents (recurrent and donor) and a commercial hybrid. The traits evaluated were yield, number of fruit, mean weight, number of locules, shape, pulp thickness, longitudinal and transverse diameter of the fruit, precocity index, and soluble solids, β-carotene, lycopene, and acylsugar content. The data were analyzed through the means test. In general, there was an increase of up to 1035% in average fruit weight of the dwarf populations in relation to the donor parent. In addition, some dwarf populations had fruit with 49% more lycopene compared to the commercial hybrid, as well as greater acylsugar content in the leaves (273%). The UFU-DW22 dwarf population stood out with good agronomic potential, higher lycopene content in the fruit, and high acylsugar content, which provides pest resistance. To continue this research, a second backcross is suggested in order to obtain lines and, posteriorly, hybrids with round fruits and compact plants, pest resistance and nutritional quality of fruit.

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Section: Resultssupporting

confidence: 83%

Agronomic potential, pest resistance, and fruit quality in BC1F3 dwarf round tomato populations

et al. 2022

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“…In contrast, the wild accession S. pennellii expressed approximately double the acylsugar concentration compared to the recurrent parent and commercial control (Pizzadoro hybrid), as well as the smallest mean numbers of whitefly eggs, nymphs, and adults (Table 3). The acylsugars, secondary metabolites present in the type IV glandular leaf trichomes in tomato, are responsible for conferring resistance to whitefly and other pest arthropods by the antixenosis mechanism (Rodriguez-Lopez et al, 2012;Maciel et al, 2018).…”

Section: Resultsmentioning

confidence: 99%

Selection of F2RC1 saladette-type dwarf tomato plant populations for fruit quality and whitefly resistance

Oliveira

Maciel

Gomes

et al. 2022

Rev. bras. eng. agríc. ambient.

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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 F2RC1 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.

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“…A negative correlation was also found between the density of glandular trichomes on tomato plants and the preference of T. evansi for oviposition (Savi et al, 2019). Lucini et al (2015) and Maciel et al (2018) showed that the density of glandular trichomes on tomato presents a significant negative correlation with the behavior (antixenosis and antibiosis) of pest arthropods, including the two-spotted spider mite.…”

Section: Mite Walking Testmentioning

confidence: 87%

Strawberry genotypes with resistance to Tetranychus urticae mediated by leaf trichomes

et al. 2020

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The two-spotted spider mite (Tetranychus urticae) is the main pest encountered in strawberry cultivation in protected environments, causing damage and increasing the cost of production associated with chemical control. Breeding programs are essential for obtaining new cultivars that are more tolerant to two-spotted spider mites. The objective was to evaluate whether the leaf trichomes mediatethe resistance of intraspecific strawberry hybrids to two-spotted spider mites. Preselected hybrids were subjected to infestation by two-spotted spider mites and evaluated via the no-choice assay and the travel test. Resistance was correlated with the density of trichomes, both glandular and non-glandular, present on the surface of the leaflets of strawberry genotypes. The results indicated that there is an influence of hybrids and cultivars on the behavior of the pest, allowing the verification of the existence of resistant genotypes (RVDA#16, RVCS#44 and Camino Real). These treatments resulted in low numbers of eggs deposited and hatched compared with the other treatments and shorter distances traveled by two-spotted spider mites on the surface of leaflets. It was also verified that the glandular trichomes presented a significant negative correlation with the average distance traveled by two-spotted spider mites on the surface of the leaf discs, indicating that these structures alter the behavior of these arthropods. Genotype resistance was associated with the presence of glandular trichomes. In addition to the superiority of the agronomic and postharvest attributes of the preselected hybrids (RVDA#16 and RVCS#44) identified in the previous selection efforts, they proved to be promising materials for achieving resistance to the spider mite, revealing important genotypes for use as cultivars and particularly as parents in breeding programs.

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Tomato genotypes with determinate growth and high acylsugar content presenting resistance to spider mite

Cited by 10 publications

References 21 publications

Agronomic potential, pest resistance, and fruit quality in BC1F3 dwarf round tomato populations

Agronomic potential, pest resistance, and fruit quality in BC1F3 dwarf round tomato populations

Selection of F2RC1 saladette-type dwarf tomato plant populations for fruit quality and whitefly resistance

Strawberry genotypes with resistance to Tetranychus urticae mediated by leaf trichomes

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