Development of BC<sub>3</sub>F<sub>2</sub> Tomato Genotypes with Arthropod Resistance Introgressed from <i>Solanum habrochaites</i> var. <i>hirsutum</i> (PI127826)

Arthropod pests are among the biggest problems faced in tomato production worldwide. To overcome the losses caused by these pests, one of the most sustainable and economical strategies is the use of resistance introgressed from wild species. We aimed to develop BC<sub>3</sub>F<sub>...

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Bibliographic Details
Main Authors: Flávia Cristina Panizzon Diniz, Juliano Tadeu Vilela de Resende, Renato Barros de Lima-Filho, Laura Pilati, Gabriella Correia Gomes, Sergio Ruffo Roberto, Paulo Roberto Da-Silva
Format: Article
Language:English
Published: MDPI AG 2022-12-01
Series:Horticulturae
Subjects:
Online Access:https://www.mdpi.com/2311-7524/8/12/1217
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Summary:Arthropod pests are among the biggest problems faced in tomato production worldwide. To overcome the losses caused by these pests, one of the most sustainable and economical strategies is the use of resistance introgressed from wild species. We aimed to develop BC<sub>3</sub>F<sub>2</sub> tomato genotypes with high levels of zingiberene (ZGB) and resistance to whitefly (<i>Bemisia tabaci</i> biotype B), South American tomato pinworm (<i>Tuta absoluta</i>), and the two-spotted spider mite (<i>Tatranychus urticae</i>), from the wild accession of <i>Solanum habrochaites</i> var. <i>hirsutum</i> (accession PI127826). The quantification of ZGB in 520 BC<sub>3</sub>F<sub>2</sub> genotypes and in the parentals yielded the selection of five genotypes with high ZGB content and three with low ZGB content, which were then infested with <i>B. tabaci</i>, <i>T. absolute</i>, and <i>T. urticae</i>. In these eight genotypes and in the parents, the types and amounts of trichomes on the leaves were determined. Additionally, molecular markers were used to identify the genotypes with a higher recurrent genome recovery. The results confirmed the transfer of resistance from <i>S. habrochaites</i> to the BC<sub>3</sub>F<sub>2</sub> genotypes and showed that this resistance seems to be directly related to high concentrations of ZGB and the presence of type IV trichomes.
ISSN:2311-7524