Genetic Improvement of Cowpea for Low Phosphorus Tolerance and High Yields

Traditional cowpea lines mostly cultivated by farmers are photoperiod sensitive and flower only during the short-day period, limiting its cultivation cycle to just once in a 12-month calendar; this usually results in a grain deficit, especially in places like Nigeria.

Project goal

To break new ground through mapping/discovering and validating the quantitative trait loci (QTLs) that govern the inheritance of agronomically important traits such as early maturity, photoperiod insensitivity, tolerance to low soil phosphorus, and other desired yield components in cowpea.

Expected outcomes:
  • Findings can be used in breeding and population development and advancement, leading to improved performance of cowpea for the benefits of smallholder cowpea farmers and consumers.
  • Generate new knowledge by mapping the genomic regions controlling earliness, photoperiod response, tolerance to low soil P and yield components in cowpea.
  • The development of improved traditional farmer preferred cowpea varieties, with multiple traits such as early maturity, photoperiod insensitivity, tolerance to low soil P, and desired yield qualities using a combination of conventional and molecular breeding approaches.

Project locations: Nigeria

Contact

Dr. Boukar, Ousmane (IITA)

Project duration

Start: 01 August 2017
End: 31 August 2020

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