<p>The selection of genotypes that exhibit resistance to pests has been proposed as an alternative to pesticide use. However, this resistance can also influence pollination by making the crops less appealing to pollinating bees. Therefore, the aim of this study was to assess the attractiveness of melon genotypes, which exhibit resistance traits against the leaf miner fly (<i>Liriomyza sativae</i>), to pollinating bees (<i>Apis mellifera</i>). Volatile organic compounds (VOCs) in male and hermaphrodite flowers of the resistant genotypes CNPH 06-1047-343, CNPH 11-1071-43, and CNPH 06-1047-341 were analysed. The Goldex and Imperial 45 commercial hybrids served as attraction controls. <i>α-</i>Pinene and Limonene were predominant in both types of flowers, with significant differences in the male flowers between the genotypes. CNPH 06-1047-341 showed the highest Limonene intensity, distinguishing it from the others, but not from Goldex or CNPH 06-1047-343. The olfactory response of the bees to the melon volatiles was assessed using a ‘Y’ olfactometer, which revealed no significant differences in bee entry between the hybrids, melon genotypes or controls. In the experiments for residence time, the bees were generally more attracted to the control than to the melon volatiles, while CNPH 06-1047-341 was less attractive than Imperial 45. The results suggest that CNPH 06-1047-341, with its high <i>α</i>-Pinene and Limonene intensities and limited attractive compounds, has no appeal to the pollinators; however, CNPH 06-1047-343 and CNPH 11-1071-43, despite being unattractive to the pest, remain attractive to the pollinators, making them promising materials for cultivation. These findings highlight the potential of specific genotypes in integrated pest management strategies and should be considered in genetic improvement programs.</p>

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Olfactory response of the pollinator, Apis mellifera, to melon (Cucumis melo) genotypes unattractive to the leaf miner fly (Liriomyza sativae)

  • Lucas de Lima Farias,
  • Nivia da Silva Dias-Pini,
  • Hilton César Rodrigues Magalhães,
  • Tigressa Helena Soares Rodrigues,
  • Ariane Morgana Leal Soares,
  • Sharon Gomes Ribeiro,
  • Marcela Camily Rodrigues Gomes,
  • Breno Magalhães Freitas

摘要

The selection of genotypes that exhibit resistance to pests has been proposed as an alternative to pesticide use. However, this resistance can also influence pollination by making the crops less appealing to pollinating bees. Therefore, the aim of this study was to assess the attractiveness of melon genotypes, which exhibit resistance traits against the leaf miner fly (Liriomyza sativae), to pollinating bees (Apis mellifera). Volatile organic compounds (VOCs) in male and hermaphrodite flowers of the resistant genotypes CNPH 06-1047-343, CNPH 11-1071-43, and CNPH 06-1047-341 were analysed. The Goldex and Imperial 45 commercial hybrids served as attraction controls. α-Pinene and Limonene were predominant in both types of flowers, with significant differences in the male flowers between the genotypes. CNPH 06-1047-341 showed the highest Limonene intensity, distinguishing it from the others, but not from Goldex or CNPH 06-1047-343. The olfactory response of the bees to the melon volatiles was assessed using a ‘Y’ olfactometer, which revealed no significant differences in bee entry between the hybrids, melon genotypes or controls. In the experiments for residence time, the bees were generally more attracted to the control than to the melon volatiles, while CNPH 06-1047-341 was less attractive than Imperial 45. The results suggest that CNPH 06-1047-341, with its high α-Pinene and Limonene intensities and limited attractive compounds, has no appeal to the pollinators; however, CNPH 06-1047-343 and CNPH 11-1071-43, despite being unattractive to the pest, remain attractive to the pollinators, making them promising materials for cultivation. These findings highlight the potential of specific genotypes in integrated pest management strategies and should be considered in genetic improvement programs.