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Comparative growth and development of four spurred anoda (Anoda cristata) accessions

Published online by Cambridge University Press:  12 June 2017

Mark J. VanGessel ,
Jill Schroeder  and
Philip Westra
Mark J. VanGessel*
Affiliation:
Department of Plant Pathology and Weed Science, Colorado State University, Fort Collins, CO 80523
Jill Schroeder
Affiliation:
Department of Entomology, Plant Pathology, Weed Science, New Mexico State University, Las Cruces, NM 88003
Philip Westra
Affiliation:
Department of Plant Pathology and Weed Science, Colorado State University, Fort Collins, CO 80523
*
Corresponding author.
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Abstract

Field studies were conducted in Colorado and New Mexico to examine growth and development of spurred anoda accessions from Colorado, Mississippi, New Mexico, and North Carolina. Accessions were grown in a common garden in both locations. Leaf and stem weight ratios, leaf area ratio, and leaf area per plant were determined. North Carolina and Mississippi accessions were similar in morphology and appearance. Leaf shape, degree of pubescence, and coloration were different in the Colorado and New Mexico accessions. At both sites, the Colorado accession was taller and the canopy wider than other accessions. In Colorado in 1993, North Carolina and New Mexico accessions had the highest total weight followed by Colorado, then Mississippi. In 1994, final total weights of North Carolina, Mississippi, and New Mexico accessions were similar and greater than the Colorado accession. All accessions had similar final total weights in New Mexico in 1993. In 1994, Mississippi, North Carolina, and New Mexico accessions had similar total weights. The Colorado accession flowered earlier than other accessions. Seeds from Mississippi and North Carolina accessions grown in Colorado were heavier than the New Mexico or Colorado accession. This research demonstrates why making inferences of weed biology for variable species that occur over diverse geographic and climatic conditions is difficult and why regionally specific data are needed for variable species.

Keywords

Spurred anoda, Anoda cristata (L.) Schlecht. ANVCRGrowth analysisleaf area ratioleaf weight ratiospecific leaf areastem weight ratioweed biologyANVCR
Type
Weed Biology and Ecology
Information
Weed Science , Volume 46 , Issue 1 , February 1998 , pp. 91 - 98
Copyright
Copyright © 1998 by the Weed Science Society of America 

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Footnotes

Current address: Research and Education Center, University of Delaware, Georgetown, DE 19947-9623

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