Selection of Cowpea Genotypes in Hydroponics, Pots, and Field for Drought Tolerance

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  • C. I. Ogbonnaya
    Department of Botany Abia State University PMB 2000 Uturu Nigeria
  • B. Sarr
    Centre d'Etude Régional pour l'Amélioration de l'Adaptation à la Sécheresse (CERAAS) BP 3320 Thies Escale Thies Sénégal
  • C. Brou
    Laboratoire d'Agrotechnologies Végetales Université Libres de Bruxelles
  • O. Diouf
    Centre d'Etude Régional pour l'Amélioration de l'Adaptation à la Sécheresse (CERAAS) BP 3320 Thies Escale Thies Sénégal
  • N. N. Diop
    Centre d'Etude Régional pour l'Amélioration de l'Adaptation à la Sécheresse (CERAAS) BP 3320 Thies Escale Thies Sénégal
  • H. Roy‐Macauley
    Centre d'Etude Régional pour l'Amélioration de l'Adaptation à la Sécheresse (CERAAS) BP 3320 Thies Escale Thies Sénégal

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Description

<jats:p>The evaluation of cowpea (<jats:italic>Vigna unguiculata</jats:italic> [L.] Walp.) for drought tolerance in the field is slow, laborious, and provides variable results. The objectives of the study were to assess the differences in the growth of cowpea genotypes in hydroponics, and to determine whether such differences could be associated with drought tolerance in pots and field. Four cowpea genotypes varying in drought tolerance were evaluated for differences in height, collar diameter, leaf area, shoot and root biomass, root‐shoot ratio, and root volume in hydroponics. On the basis of these results, selection of cowpea for vigorous growth under well‐watered conditions could be conducted by means of hydroponics; however, rapid selection of cowpea for drought tolerance could not be made by this technique.</jats:p>

Journal

  • Crop Science

    Crop Science 43 (3), 1114-1120, 2003-05

    Wiley

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