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Identifying Cassava Genotypes Resistant to the African Cassava Whitefly, Bemisia tabaci (Gennadius)

Author

Listed:
  • Jackie Atim

    (Kearney Agricultural Research and Extension Center, University of California Agriculture and Natural Resources, 9240, S. Riverbend Avenue, Parlier, CA 93648, USA
    Mukono Zonal Agricultural Research and Development Institute, Mukono P.O. Box 164, Uganda)

  • Andrew Kalyebi

    (National Crops Resources Research Institute, Kampala P.O. Box 7084, Uganda)

  • Adriana Bohorquez-Chaux

    (International Center for Tropical Agriculture (CIAT), Palmira 763531, Valle del Cauca, Colombia)

  • Luis Augusto Becerra Lopez-Lavalle

    (International Center for Tropical Agriculture (CIAT), Palmira 763531, Valle del Cauca, Colombia)

  • Christopher Abu Omongo

    (National Crops Resources Research Institute, Kampala P.O. Box 7084, Uganda)

  • John Colvin

    (Natural Resources Institute, Central Avenue, Chatham Maritime, Kent ME4 4TB, UK)

  • M. N. Maruthi

    (Natural Resources Institute, Central Avenue, Chatham Maritime, Kent ME4 4TB, UK)

Abstract

The whitefly, Bemisia tabaci , is a major pest of cassava in Africa. Developing whitefly-resistant cassava can control both whiteflies and viral diseases. The main aim of this study was to identify cassava genotypes resistant to four B. tabaci populations, sub-Saharan Africa 1—subgroups 1, 2, and 3 (SSA1-SG1, SSA1-SG2, and SSA1-SG3) and sub-Saharan Africa 2 (SSA2) that colonize cassava, as well as understand the mechanisms of resistance. Utilizing the antixenosis and antibiosis techniques in the choice and no-choice tests, respectively, to screen for whitefly resistance, we tested 46 cassava genotypes. Of these, 11 (Njule Red, Nase 3, Nase 1, Kibandameno, Sagonja, Aladu, Kiroba, Magana, 72-TME-14, Sauti, and PER 415) exhibited antixenosis, as they were least preferred for oviposition by all four whiteflies population in choice tests. Ten genotypes exhibited antibiosis (nymph mortality) against SSA1-SG1 and SSA1-SG3 in no-choice tests, and these were, Pwani, Nase 14, Kalawe, Eyope, NGA11, CoI2246, Mkumbozi, KBH2002/0066, Yizaso, and PER 608. Eight genotypes—Tongolo, Mbundumali, Colicanana, Orera, Ofumbachai, Nam 130, Tajirika, and MECU72—exhibited both antixenosis and antibiosis mechanisms against SSA1-SG1 and SSA1-SG3. And these can be considered the best sources of resistance for the potential development of whitefly-resistant cassava varieties in African countries.

Suggested Citation

  • Jackie Atim & Andrew Kalyebi & Adriana Bohorquez-Chaux & Luis Augusto Becerra Lopez-Lavalle & Christopher Abu Omongo & John Colvin & M. N. Maruthi, 2024. "Identifying Cassava Genotypes Resistant to the African Cassava Whitefly, Bemisia tabaci (Gennadius)," Agriculture, MDPI, vol. 14(7), pages 1-17, June.
    • Handle: RePEc:gam:jagris:v:14:y:2024:i:7:p:1016-:d:1423525
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    References listed on IDEAS

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    1. Laura Perez-Fons & Tatiana M Ovalle & M N Maruthi & John Colvin & Luis Augusto Becerra Lopez-Lavalle & Paul D Fraser, 2020. "The metabotyping of an East African cassava diversity panel: A core collection for developing biotic stress tolerance in cassava," PLOS ONE, Public Library of Science, vol. 15(11), pages 1-16, November.
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