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Resistance to Callosobruchus maculatus Developed Via Gamma Radiation in Cowpea

Author

Listed:
  • Langa Tembo

    (University of Zambia, Department of Plant Science Box 32379 Lusaka, Zambia)

  • Lawrent Pungulani

    (Department of Agricultural Research Stations, Lilongwe Malawi)

  • Philemon H. Sohati

    (University of Zambia, Department of Plant Science Box 32379 Zambia)

  • Juliet C. Mataa

    (Zambia Agricultural Research Institute, Private bag 1, Chilanga, Zambia)

  • Kalaluka Munyinda

    (University of Zambia, Department of Plant Science Box 32379 Lusaka, Zambia)

Abstract

Among the biotic stresses that affect cowpea (Vigna unguiculata L) productivity, infestation by cowpea bruchid beetles (Callosobruchus maculatus) is a major problem, causing yield losses of up to 100 %. To alleviate this problem, use of resistant varieties is a feasible approach for small-scale farmers. In Zambia, there are no reported sources of resistance to C. maculatus. The objectives of this study were: i) to evaluate certain cowpea mutants, generated at the University of Zambia, for resistance to C. maculatus; ii) to cluster the tested genotypes based on height, number of pods per plant, 100-seed weight, yield ha-1, number of eggs laid and adult emergence; and iii) to evaluate the candidate mutants for protein content. Experiments were conducted at three locations in 2014/15. The mutants, LT 11-5-2-2, BB 7-9-7-5 and BB-14-16-22, were found to be resistant to C. maculatus across locations and they out-performed their respective parents (p

Suggested Citation

  • Langa Tembo & Lawrent Pungulani & Philemon H. Sohati & Juliet C. Mataa & Kalaluka Munyinda, 2017. "Resistance to Callosobruchus maculatus Developed Via Gamma Radiation in Cowpea," Journal of Agriculture and Crops, Academic Research Publishing Group, vol. 3(8), pages 65-71, 08-2017.
    • Handle: RePEc:arp:jacarp:2017:p:65-71
    DOI: arpgweb.com/?ic=journal&journal=14&info=aims
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