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Seed Dormancy in Velvetleaf

Published online by Cambridge University Press:  12 June 2017

Lucien J. LaCroix  and
David W. Staniforth
Lucien J. LaCroix
Affiliation:
Department of Plant Science, University of Manitoba, Winnipeg, Manitoba
David W. Staniforth
Affiliation:
Department of Botany and Plant Pathology, Iowa State University, Ames, Iowa
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Abstract

Seed dormancy in velvetleaf (Abutilon theophrasti Medic.) was due primarily to an impermeable seed coat. Embryo dormancy was not a factor in the occurrence or maintenance of seed dormancy. The presence of germination inhibitors was indicated, but their role in seed dormancy appeared limited. The termination of dormancy under field conditions was considered to result from naturally occurring fractures in the seed coat. The point of fracture was always in the region of the chalazal slit and was considered to follow intense drying under natural conditions. Drying seed in laboratory experiments produced the same fractures in seed coats.

Type
Research Article
Information
Weeds , Volume 12 , Issue 3 , July 1964 , pp. 171 - 174
Copyright
Copyright © 1964 Weed Science Society of America 

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References

Literature Cited

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