Hostname: page-component-586b7cd67f-2plfb Total loading time: 0 Render date: 2024-11-25T08:22:18.231Z Has data issue: false hasContentIssue false
  • English
  • Français

The influence of paclobutrazol on the distribution and utilization of 14C-labelled assimilate fixed at anthesis in oil-seed rape (Brassica napus L.)

Published online by Cambridge University Press:  27 March 2009

A. A. Addo-Quaye ,
R. W. Daniels  and
D. H. Scarisbrick
A. A. Addo-Quaye
Affiliation:
Wye College (University of London), Ashford, Kent, TN25 5AH
R. W. Daniels
Affiliation:
Wye College (University of London), Ashford, Kent, TN25 5AH
D. H. Scarisbrick
Affiliation:
Wye College (University of London), Ashford, Kent, TN25 5AH
Get access Rights & Permissions [Opens in a new window]

Summary

Untreated and paclobutrazol-treated field-grown plants of winter oil-seed rape cv. Jet Neuf were exposed to 14CO2 at anthesis. Redistribution of labelled assimilate was followed in sequential harvests between exposure and maturity.

Labelled assimilates moved progressively from the leaves into the stem and reproductive parts. At maturity 9% of 14C fixed at anthesis had been mobilized into reproductive organs. Paclobutrazol increased the proportion of 14C translocated to the uppermost branches especially the terminal raceme.

It is suggested that stem reserves are valuable for yields commonly achieved in U.K. commercial practice.

Type
Research Article
Information
The Journal of Agricultural Science , Volume 105 , Issue 2 , October 1985 , pp. 365 - 373
Copyright
Copyright © Cambridge University Press 1985

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

Addo-Quaye, A. A. (1985). Chemical manipulation of the structure and development of oilseed rape (Brassica napus L.) Ph.D. thesis, Wye College, University of London, Ashford, Kent.Google Scholar
Austin, R. B., Morgan, C. L., Ford, M. A. & Blackwell, R. D. (1980). Contributions to grain yield from pre-anthesis assimilation in tall and dwarf barley phenotypes in two contrasting seasons. Annals of Botany 45, 309–319.CrossRefGoogle Scholar
Bidinger, R., Musgrave, R. B. & Fischer, R. A. (1977). Contribution of stored pre-anthesis assimilate to grain yield in wheat and barley. Nature 270, 431–433.CrossRefGoogle Scholar
Bilsborrow, P. E. & Norton, G. (1984).A consideration of factors affecting the yield of oilseed rape. In Aspects of Applied Biology 6, Agronomy, physiology, plant breeding and crop protection of oilseed rape, pp. 91–99.Google Scholar
Brar, G. & Thies, N. (1977). Contribution of leaves, stems siliques and seeds to dry matter accumulation in ripening seeds of rapeseed, Brassicus napus L. Zeitschrift für Pflanzenphysiologie 82, 1–13.CrossRefGoogle Scholar
Chapman, J. F. (1982). Chemical growth regulator studies on oilseed rape (Brassica napus L.). Ph.D. thesis, Wye College, University of London, Ashford, Kent.Google Scholar
Chapman, J. F., Daniels, R. W. & Scarisbrick, D. H. (1984). Field studies on 14C assimilate fixation and movement in oil-seed rape (B. napus). Journal of Agricultural Science, Cambridge 102, 23–31.CrossRefGoogle Scholar
Daniels, R. W., Alcock, M. B. & Scarisbrick, D. H. (1982). A reappraisal of stem reserve contribution to grain yield in spring barley (Hordeum vulgare L.). Journal of Agricultural Science, Cambridge 98, 347–355.CrossRefGoogle Scholar
Freyman, S., Charnetski, W. A. & Crookston, R. K. (1973). Role of leaves in the formation of seed in rape. Canadian Journal of Plant Science 53, 693–694.CrossRefGoogle Scholar
Gallagher, J. N., Biscoe, P. V. & Scott, R. K. (1975). Barley and its environment. V. Stability of grain weight. Journal of Applied Ecology 12, 319–336.CrossRefGoogle Scholar
Harper, F. R. & Berkenkamp, B. (1975). Revised Growth Stage Key For Brassica campestris and B. napus. Canadian Journal of Plant Science 55, 657–658.CrossRefGoogle Scholar
Höfner, W. & Kühn, H. (1982). Effect of growth regulator combinations on ear development, assimilate translocation and yield in cereal crops. In Chemical Manipulation of Crop Growth and Development (ed. McLaren, J. S.), pp. 375–390. London: Butterworth.CrossRefGoogle Scholar
Hume, D. J. & Criswell, J. G. (1973). Distribution and utilization of 14C-labelled assimilates in soybeans. Crop Science 13, 519–524.CrossRefGoogle Scholar
Inanga, S., Kumura, A. & Murata, Y. (1979). Photosynthesis and yield of rapeseed. Japan Agricultural Research Quarterly 13, 169–175.Google Scholar
Shahid, Mahamud (1983). Influence of chemical plant growth regulators on the development and yield of oilseed rape (Brassica napus L). Ph.D. thesis, Wye College, University of London, Ashford, Kent.Google Scholar
Major, D. J., Bole, J. B. & Charnetski, W. A. (1978). Distribution of photosynthates after 14CO2 assimilation by stems, leaves and pods of rape plants. Canadian Journal of Plant Science 58, 783–787.CrossRefGoogle Scholar
Major, D. J. & Charnetski, W. A. (1976). Distribution of 14C-labelled assimilates in rape plants. Crop Science 16, 530–532.CrossRefGoogle Scholar