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African Crop Science Journal
African Crop Science Society
ISSN: 1021-9730
EISSN: 2072-6589
Vol. 4, No. 3, 1996, pp. 283-288
Bioline Code: cs96067
Full paper language: English
Document type: Research Article
Document available free of charge

African Crop Science Journal, Vol. 4, No. 3, 1996, pp. 283-288

 en Inheritance of leaf mark, pod dehiscence and dry pod colour in crosses between wild and cultivated cowpeas
Aliboh, V.O.; Kehinde, O.B. & Fawole, I.

Abstract

The inheritance of three traits, inverted V-shaped mark on 
leaves, pod dehiscence and dry pod colour, was studied in
crosses between wild, weedy and cultivated varieties of
cowpea,  Vigna unguiculata (L) Walp.  By
cross-pollinating only open flowers that failed to produce
pollen, successful crosses were obtained on wild cowpea as
female parents in contrast to previous attempts. 
Inheritance data collected on the parents, Fl, F2 and
backcross progenies, indicate that each of the three traits 
is controlled by a single dominant gene in the crosses that
were  examined.  The wild and the weedy lines carry dominant
genes while the recessive alleles reside in the cultivated
varieties but the genes controlling the traits, in both wild
and weedy cowpea lines are allelic.  The symbols Vsm, Dhp 
and Bk-2 are assigned to the dominant genes that govern the
presence of the inverted V-shaped mark on leaves, pod
dehiscence and black dry pod colour, respectively.   The
significance of these results in cowpea improvement is
discussed.

Keywords
Cowpea genetics, Vigna unguiculata, dominant genes

 
 fr
Aliboh, V.O.; Kehinde, O.B. & Fawole, I.

Résumé

L'heredite des trois caracteres, la forme V inversee sur les
feuilles, dehiscence des gousses, la couleur des gousses
sechees a ete etudiee la suite des croisements entre les
varietes sauvages herbacees et cultivees du niebe Vigna
unguiculata (L) Walp.  En croisant  seulement des fleurs
ouvertes pendant la pollinisation qui n'ont pas produit des
pollens, des parents femelles ont ete obtenus avec le niebe 
sauvage suite aux croisements reussis contrairement aux
precedentes  tentatives. Les donnees hereditaires collectees
sur les parents, F1 F2  et les descendants du "Back cross"
montrent que chacun des trois caracteres est controlle par un
seul gene dominant sur les croisements  examines.  Les lignees
sauvages et herbacees portent des genes dominants alors que
les alleles recessifs resident dans les varietes cultivees 
mais les genes controllant les caracteres dans les deux
lignees du  niebe (Sauvage et herbacee) sont sur les alleles. 
Les symboles Vsm, Dhp et Bk-2 sont assignes sur les
genes dominants qui gouvernent respectivement la presence de
la form V inversee sur les feuilles, la dehiscence des
gousses, la couleur des gousses sechees.  L'importance de ces
resultats sur l'amelioration du niebe est evoquee.

Mots Clés
Vigna unguiculata, la genetique du niebe, genes dominants

 
© Copyright 1996 - African Crop Science Society

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