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Vegetative Reproduction in Western Ironweed

Published online by Cambridge University Press:  12 June 2017

C. J. Scifres  and
M. K. McCarty
C. J. Scifres
Affiliation:
Crops Research Division, Agr. Res. Serv., U. S. Dep. of Agr., Lincoln, Nebraska
M. K. McCarty
Affiliation:
Crops Research Division, Agr. Res. Serv., U. S. Dep. of Agr., Lincoln, Nebraska Brush Research, Texas A & M University at the South Plains Research and Extension Center, Lubbock, Texas
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Abstract

The apex of western ironweed (Vernonia baldwini Torr.) vegetative bud shoots adheres to the tunica-corpus theory. Two layers of cells with the plane of wall formation anticlinal to the main axis (tunica) lie over a body of tissue with no pattern to wall formation (corpus). The bud shoot can be divided into the promeristem, the zone of elongation, and a zone of maturation on the basis of histology. It is suggested that the promeristem may be the seat for dormancy mechanisms in western ironweed and that future investigations be concentrated on this site. There was no evidence of a structural barrier to translocation separating the rhizome and bud shoot.

Type
Research Article
Information
Weed Science , Volume 17 , Issue 1 , January 1969 , pp. 104 - 108
Copyright
Copyright © 1969 Weed Science Society of America 

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References

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