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Anatomical Studies of Euphorbia esula L.

Published online by Cambridge University Press:  12 June 2017

Gerald A. Myers ,
Charles A. Beasley  and
Lyle A. Derscheid
Gerald A. Myers
Affiliation:
South Dakota State University, Brookings, South Dakota
Charles A. Beasley
Affiliation:
South Dakota State University, Brookings, South Dakota
Lyle A. Derscheid
Affiliation:
South Dakota State University, Brookings, South Dakota
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Abstract

All horizontal underground structures were roots and not rhizomes. The small, light-colored feeder roots are short-lived and consist mainly of primary tissue. Only one transition zone per clone was found. This was found in the collet (lower hypocotylary swelling). The transition from exarch, radial stele of the root, to endarch, collateral stele of the upper collet, was complete in approximately 2500 microns. All root primordia examined had endogenous origin from pericycle and pericyclic tissues. Buds arose endogenously in roots but exogenously in the region of the hypocotyl with endarch protoxylem. Primordia were often identified as roots or shoots prior to their emergence from the main axis.

Type
Research Article
Information
Weeds , Volume 12 , Issue 4 , October 1964 , pp. 291 - 295
Copyright
Copyright © 1964 Weed Science Society of America 

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References

Literature Cited

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