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<p>The jackfruit shoot and fruit borer, <i>Glyphodes caesalis</i> (Walker), is a significant pest of jackfruit, causing economic damage to both shoots and fruits globally. The studies on the screening of twelve selected genotypes of jackfruit for resistance to <i>G. caesalis</i>, were carried out at the Department of Agricultural Entomology, UAS, GKVK, Bangalore during 2023 from January to August. The incidence of <i>G. caesalis</i> was recorded at ten days interval for shoot and fruit infestation. Out of 12 jackfruit genotypes, Malaysia Jack and Kalashri showed resistance to shoot and tolerance to fruit infestation. TBT-3, Ramachandra, Lalbag Madhura and Ashok Orange were tolerant to both shoot and fruit infestation and Swarna and Byarachandra were found susceptible. The average shoot and fruit infestation by <i>G. caesalis</i> across all genotypes was 5.18% and 7.44%, respectively. Infestation was negatively correlated with leaf colour and leaf apex shape, fruit shape and positively correlated with entry points of in both single fruits and multiple fruits. The infestation showed negative association with total phenols, tannins, flavonoids, antioxidant activity and positive association with total sugars. Genotypes screening against fruit borer serves as an eco-friendly strategy to mitigate economic losses caused by the pest.</p>

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Screening of selected genotypes of jackfruit (Artocarpus heterophyllus Lam.) for resistance of jackfruit shoot and fruit borer, Glyphodes caesalis (Walker) (Lepidoptera: Crambidae)

  • 期刊论文

  • 发表日期：

    2026年3月26日

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  • Manjula,
  • Sumithramma N.,
  • Vidya Mulimani,
  • A. R. V. Kumar,
  • Shyamalamma

摘要

The jackfruit shoot and fruit borer, Glyphodes caesalis (Walker), is a significant pest of jackfruit, causing economic damage to both shoots and fruits globally. The studies on the screening of twelve selected genotypes of jackfruit for resistance to G. caesalis, were carried out at the Department of Agricultural Entomology, UAS, GKVK, Bangalore during 2023 from January to August. The incidence of G. caesalis was recorded at ten days interval for shoot and fruit infestation. Out of 12 jackfruit genotypes, Malaysia Jack and Kalashri showed resistance to shoot and tolerance to fruit infestation. TBT-3, Ramachandra, Lalbag Madhura and Ashok Orange were tolerant to both shoot and fruit infestation and Swarna and Byarachandra were found susceptible. The average shoot and fruit infestation by G. caesalis across all genotypes was 5.18% and 7.44%, respectively. Infestation was negatively correlated with leaf colour and leaf apex shape, fruit shape and positively correlated with entry points of in both single fruits and multiple fruits. The infestation showed negative association with total phenols, tannins, flavonoids, antioxidant activity and positive association with total sugars. Genotypes screening against fruit borer serves as an eco-friendly strategy to mitigate economic losses caused by the pest.