This Article Full Text (PDF) Alert me when this article is cited Alert me if a correction is posted Services Email this article to a friend Similar articles in this journal Similar articles in Web of Science Similar articles in PubMed Alert me to new issues of the journal Download to citation manager Citing Articles Citing Articles via HighWire Citing Articles via CrossRef Citing Articles via Web of Science (15) Citing Articles via Google Scholar Google Scholar Articles by Adkins, S. W. Articles by Ross, J. D. Search for Related Content PubMed PubMed Citation Articles by Adkins, S. W. Articles by Ross, J. D. Agricola Articles by Adkins, S. W. Articles by Ross, J. D.

Articles

Studies in Wild Oat Seed Dormancy

II. ACTIVITIES OF PENTOSE PHOSPHATE PATHWAY DEHYDROGENASES

Department of Botany, University of Reading, Whiteknights, Reading, RG6 2AS, Berkshire, United Kingdom

A selected strain of wild oat (Avena fatua L.) seed has been shown to lose dormancy rapidly during moist soil incubation at 25 C, whereas seed kept similarly at 5 C maintained a high level of dormancy.

The activities of cytosolic dehydrogenase enzymes of the pentose phosphate pathway were assayed throughout a period of moist soil incubation at these two temperatures. A distinction was made between extractable dehydrogenases from the embryo and the endosperm regions of the caryopsis.

Dehydrogenase activities monitored in seeds incubated at 25 C gradually increased over the course of the investigation. The largest increases in activity occurred during incubation at 5 C, the situation in which dormancy is maintained. No obvious connection could be found between dormancy breakage and increased activity of the pentose phosphate pathway dehydrogenases.

This article has been cited by other articles:

				S. Gallais, M.-A. P. de Crescenzo, and D. L. Laval-Martin Evidence of active NADP+ phosphatase in dormant seeds of Avena sativa L. J. Exp. Bot., August 1, 2000; 51(349): 1389 - 1394. [Abstract] [Full Text] [PDF]