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Effect of Spacing and Nitrogen-level on Floral Initiation in Cocksfoot (Dactylis glomerata L.)

Nature volume 191, pages 195–196 (1961)Cite this article

Abstract

COCKSFOOT, like many perennial herbage grasses, is a long-day plant1, and is reported to have an obligate winter requirement for cold and short days2 or cold alone3, before floral initiation can occur. It has not been possible to satisfy this requirement artificially by cold or short-day treatment given to germinating seed or young seedlings, (Calder, D. M., and Cooper, J. P., unpublished data) although such treatment has been effective in Lolium and the winter cereals1. Preliminary observations suggested that spacing of plants and nitrogen supply might have an overriding influence on flowering in cocksfoot and the following experiment was planned to investigate these effects.

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References

  1. Cooper, J. P., Herb. Abstr., 30, 71 (1960).

    Google Scholar 

  2. Gardner, F. P., and Loomis, W. E., Plant Physiol., 28, 201 (1953).

    Article  CAS  Google Scholar 

  3. Wycherley, P. R., Meded. LandbHoogesch. Wageningen, 52, 75 (1952).

    Google Scholar 

  4. Gott, M. B., Gregory, F. G., and Purvis, O. N., Ann. Bot., Lond., N.S., 19, 87 (1955).

    Article  Google Scholar 

  5. Von Denffer, D., Planta, 31, 418 (1940).

    Article  Google Scholar 

  6. Leopold, A. C., Quart. Rev. Biol., 26, 247 (1951).

    Article  CAS  Google Scholar 

  7. Evans, Gwilym, Welsh Plant Breed. Sta. Ann. Rep., 1959, 88 (1960).

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Author notes

  1. D. M. CALDER: On study leave from Massey Agricultural College, University of New Zealand.

Authors and Affiliations

  1. Welsh Plant Breeding Station, Plas Gogerddan, Nr. Aberystwyth

    D. M. CALDER & J. P. COOPER

Authors
  1. D. M. CALDER
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  2. J. P. COOPER
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CALDER, D., COOPER, J. Effect of Spacing and Nitrogen-level on Floral Initiation in Cocksfoot (Dactylis glomerata L.). Nature 191, 195–196 (1961). https://doi.org/10.1038/191195a0

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