Hostname: page-component-cd9895bd7-q99xh Total loading time: 0 Render date: 2024-12-26T18:13:49.548Z Has data issue: false hasContentIssue false
  • English
  • Français

Morphology and genetics of two gene markers, ‘Swollen stem base’ and ‘Hastate leaf’ in cowpea, Vigna Unguiculata (L) Walp.

Published online by Cambridge University Press:  27 March 2009

O. A. Ojomo
O. A. Ojomo
Affiliation:
Institute of Agricultural Research and Training P.M.B. 5029, Ibadan, Nigeria
Get access Rights & Permissions [Opens in a new window]

Summary

Two gene markers were observed among cowpea breeding lines in Ibadan, Nigeria. One is the swollen stem base which is due to a larger quantity of phloem parenchyma in the bottom part of the stem below the first primary leaf than in the normal stem. It is inherited as a simple dominant trait and the symbol Sw is suggested. The other is the hastate-leaf which is expressed as extremely narrow trifoliate compared with the normal. It is inherited as a simple dominant trait and the symbol Ha is suggested. Dominance may not be complete in both cases as variable expressions of the marker genes were observed in F2. The effects of the marker genes on yield and other characters are currently being investigated.

Type
Short Note
Information
The Journal of Agricultural Science , Volume 88 , Issue 1 , February 1977 , pp. 227 - 231
Copyright
Copyright © Cambridge University Press 1977

Access options

Get access to the full version of this content by using one of the access options below. (Log in options will check for institutional or personal access. Content may require purchase if you do not have access.)

References

Andries, J. A., Jones, J. E., Sloane, L. W. & Marshall, J. G. (1969). Effects of okro leaf shape on boll rot, yield and other important characteristics of upland cotton, Gossypium hirsutum L. Crop Science 9, 705–10.CrossRefGoogle Scholar
Bliss, F. A. & Robertson, D. C. (1971). Genetics of host reaction in cowpea to Cowpea Yellow Mosaic and Cowpea Mottle Virus. Crop Science 11, 258–62.CrossRefGoogle Scholar
Ojomo, O. A. (1971). Inheritance of flowering date in cowpea Vigna unguiculata. Tropical Agriculture, Trinidad 48, 279–82.Google Scholar
Rachie, K. O., Rawal, K. & Franckowiak, J. D. (1975a). A rapid method of hand crossing cowpea. International Institute for Tropical Agriculture, Technical Bulletin 2.Google Scholar
Rachie, K. O., Rawax, K., Franckowiak, J. D. & Akinpelu, M. A. (1975b). Two outcrossing mechanisms in cowpea, Vigna unguiculata L. Walp. Euphytica 24, 159–63.CrossRefGoogle Scholar
Snyder, C. H. & David, P. R. (1957). The Principle of Heredity, 5th ed.Boston: D. C. Heath & Co.Google Scholar
Wells, D. G. (1960). Pulse breeding. Final Project Report, International Development Service Mission to Western Nigeria.Google Scholar