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<p>Several pests, such as <i>Bemisia tabaci</i> and <i>Tuta absoluta</i>, can reduce tomato (<i>Solanum lycopersicum</i> L.) fruit production. Selection of resistant genotypes is one important pest management method. Thus, the objective of the present study is to evaluate the relationship between acylglucose levels, an allelochemical that activates resistance against tomato pests, leaf trichome types in tomato genotypes from two segregating populations, and their association with resistance to whitefly (<i>Bemisia tabaci</i>) and tomato leafminer (<i>Tuta absoluta</i>). The treatments were genotypes F<sub>2</sub>BC<sub>4</sub> and F<sub>2</sub> ([M08 × F<sub>2</sub>BC<sub>3</sub>) <i>S. pennellii</i> × <i>S. lycopersicum</i>] with contrasting levels of acylglucoses, <i>Solanum pennellii</i> – LA-716 (resistance pattern) and <i>Solanum lycopersicum</i> lineage UEL M08 and <i>S. lycopersicum</i> cv. Redenção (susceptibility pattern). Evaluations of the genotypes were carried out by analyzing the densities and types of trichomes. Oviposition and nymphs of <i>B. tabaci</i> and damage severity of <i>T. absoluta</i> were evaluated. Densities of glandular trichomes are positively correlated to levels of acylglucoses. The advanced genotypes with high levels of the allelochemical reduced <i>B. tabaci</i> nymphs and eggs and the severity of <i>T. absoluta</i> damage, compared to commercial material. The desired characteristic of <i>S. pennellii</i> is inherited throughout backcrosses. The genotypes RVTA-2010-31319-214-238-pl#427&#xa0;M and RVTA-2010-31-177-177-325-pl#42R demonstrate potential to advance the tomato breeding program to obtain pest-tolerant cultivars.</p>

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Tomato genotypes with high acylglucose levels tolerant to arthropod pests

  • 期刊论文

  • 发表日期：

    2025年5月27日

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  • Luana de Souza Marinke,
  • Fernando Teruhiko Hata,
  • Gabriella Correia Gomes,
  • Gabriel Danilo Shimizu,
  • Juliano Tadeu Vilela de Resende

摘要

Several pests, such as Bemisia tabaci and Tuta absoluta, can reduce tomato (Solanum lycopersicum L.) fruit production. Selection of resistant genotypes is one important pest management method. Thus, the objective of the present study is to evaluate the relationship between acylglucose levels, an allelochemical that activates resistance against tomato pests, leaf trichome types in tomato genotypes from two segregating populations, and their association with resistance to whitefly (Bemisia tabaci) and tomato leafminer (Tuta absoluta). The treatments were genotypes F2BC4 and F2 ([M08 × F2BC3) S. pennellii × S. lycopersicum] with contrasting levels of acylglucoses, Solanum pennellii – LA-716 (resistance pattern) and Solanum lycopersicum lineage UEL M08 and S. lycopersicum cv. Redenção (susceptibility pattern). Evaluations of the genotypes were carried out by analyzing the densities and types of trichomes. Oviposition and nymphs of B. tabaci and damage severity of T. absoluta were evaluated. Densities of glandular trichomes are positively correlated to levels of acylglucoses. The advanced genotypes with high levels of the allelochemical reduced B. tabaci nymphs and eggs and the severity of T. absoluta damage, compared to commercial material. The desired characteristic of S. pennellii is inherited throughout backcrosses. The genotypes RVTA-2010-31319-214-238-pl#427 M and RVTA-2010-31-177-177-325-pl#42R demonstrate potential to advance the tomato breeding program to obtain pest-tolerant cultivars.