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© 1987 Oxford University Press

RESEARCH-ARTICLE

Changes in Respiratory Potential of Dormant and Non-dormant Galium aparine L. (cleavers) Seeds during Dry Storage

JANET R. HILTON1 and JONATHAN A. THOMAS2

1University of Bristol, Department of Agricultural Sciences, Long Ashton Research Station, Long Ashton Bristol BS18 9AF, U.K.
2Commonwealth Bureau of Soils, Rothamsted Experimental Station, Harpenden Herts. AL5 2JQ, U.K.

Hilton, J. R. and Thomas, J. A. 1987. Changes in respiratory potential of dormant and non-dormant Galium aparine L. (cleavers) seeds during dry storage.—J. exp. Bot. 38: 1484–1490.

Pre-germinative rates of O2 uptake of two collections of Galium aparine L. seed were compared throughout a 9 month period of dry storage at 4 °C, 23 °C and at ambient (frost-protected) temperatures. Uptake of O2 by the dormant seeds was generally higher than that of the less dormant seeds except when freshly-harvested. Moreover, changes in the O2 consumption of seeds stored at ambient temperatures could be associated with periods of germination and seedling emergence in the field. The results are discussed in relation to changes in respiratory metabolism during dormancy breakage.


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