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Seed ripening in grasses. I. Changes in carbohydrate content

Published online by Cambridge University Press:  27 March 2009

J. L. Stoddart
J. L. Stoddart
Affiliation:
Welsh Plant Breeding Station, Aberystwyth
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Extract

1. In grass seed crops accurate assessment of the optimum harvest date is made difficult by the lack of knowledge of seed ripeness. In order to define ripeness in physiological terms studies have been initiated the first of which is described in this paper.

2. Samples of Aberystwyth S. 321 perennial ryegrass (Lolium perenne L.), S. 143 cocksfoot (Dactylis glomerata L.), S. 48 and S. 352 timothy varieties (Phleum pratense L.) were taken at 3-day intervals from inflorescence emergence to seed harvest. These were analysed for total 80 % ethanol soluble carbohydrates (TSC) reducing sugars, sucrose and starch, whilst duplicate samples were air-dried for determination of thousand seed weight and percentage germination.

Type
Research Article
Information
The Journal of Agricultural Science , Volume 62 , Issue 1 , February 1964 , pp. 67 - 72
Copyright
Copyright © Cambridge University Press 1964

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