Hostname: page-component-848d4c4894-nmvwc Total loading time: 0 Render date: 2024-06-23T20:27:05.422Z Has data issue: false hasContentIssue false

Effects of day length on the morphology and flowering of five determinate varieties of Phaseolus vulgaris L.

Published online by Cambridge University Press:  27 March 2009

O. O. Ojehomon
Affiliation:
School of Agriculture, University of Cambridge
A. S. Rathjen
Affiliation:
School of Agriculture, University of Cambridge
D. G. Morgan
Affiliation:
School of Agriculture, University of Cambridge

Summary

In an experiment to determine the effect of photoperiods of 11, 13 and 15 h on the floral development of five determinate varieties of Phaseolus vulgaris it has been shown that long photoperiods bring about the abscission of flower buds on the main axis and secondary branches of three varieties native to South America. On the basis of these results it is concluded that under field conditions it is the long photoperiods of the British summer which are largely responsible for the poor development and eventual abscission of flower buds in these varieties for most of the growing season.

Type
Research Article
Copyright
Copyright © Cambridge University Press 1968

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

REFERENCES

Joffe, A. (1958). The effect of photoperiod and temperature on the growth of birdsfoot trefoil, Lotus corniculatus L. S. Afr. J. agric. Sci. 1, 435–50.Google Scholar
Madsen, G. C. (1947). Influence of photoperiod on microsporogenesis in Cosmos sulphureus. Cav. Var. Klondike Bot. Gaz. 109, 120–32.Google Scholar
Nielson, C. S. (1942). Effects of photoperiod on microsporogenesis in Biloxi soyabean. Bot. Gaz. 104, 99106.CrossRefGoogle Scholar
Njoku, E. (1958). The photoperiodic response of some Nigerian plants. Jl W. Afr. Sci. Ass. 4, 99112.Google Scholar
Ojehomon, O. O. (1966). Development of flower primordia of Phaseolus vulgaris L. Savi. Ann. Bot. 30, 487–92.CrossRefGoogle Scholar
Roberts, R. H. (1963). The reproductive sequence as revealed by the regulation of flowering with natural lipid hormones. In Golloques Internationaux du Centre National de la Recherche Scientifique, no. 123. Paris. pp. 611–20.Google Scholar
Salisbury, F. B. (1963). The Flowering Process. New York: Macmillan.CrossRefGoogle Scholar
Wienk, J. F. (1963). Photoperiodic effects in Vigna unguiculata L. Walp. Meded. Lanb Hogesch., Wageningen 63 (3) 182.Google Scholar