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Regrowth of perennial ryegrass as affected by simulated leaf sheaths

Published online by Cambridge University Press:  27 March 2009

Alison Davies ,
M. Eleanor Evans  and
Janet K. Exley
Alison Davies
Affiliation:
Welsh Plant Breeding Station, Plas Oogerddan, Aberystwyth, Dyfed, Wales
M. Eleanor Evans
Affiliation:
Welsh Plant Breeding Station, Plas Oogerddan, Aberystwyth, Dyfed, Wales
Janet K. Exley
Affiliation:
Welsh Plant Breeding Station, Plas Oogerddan, Aberystwyth, Dyfed, Wales
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Summary

Simulating the accumulation of dead leaf sheaths in perennial ryegrass by masking the tiller bases increased leaf and sheath length and tiller weight but decreased tiller production. Exposure of previously masked tiller bases or stripping back the subtending leaf and sheath to expose the tiller bud in its axil stimulated tiller production. A photomorphogenic effect is postulated which controls the partitioning of dry matter between the growth of new leaf and sheath tissue on existing tillers, and the development of new tillers from tiller buds.

Type
Research Article
Information
The Journal of Agricultural Science , Volume 101 , Issue 1 , August 1983 , pp. 131 - 137
Copyright
Copyright © Cambridge University Press 1983

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