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Comparative growth of Palmer amaranth (Amaranthus palmeri) accessions

Published online by Cambridge University Press:  20 January 2017

Jason A. Bond  and
Lawrence R. Oliver
Lawrence R. Oliver
Affiliation:
Department of Crop, Soil, and Environmental Sciences, University of Arkansas, Fayetteville, AR 72701
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Abstract

A 2-yr field study was conducted to compare growth characteristics of 24 Palmer amaranth accessions collected from across the indigenous range of the species in the United States. Variation in growth and development of Palmer amaranth was noted among accessions based on leaf area ratio (LAR), specific leaf area (SLA), net assimilation rate (NAR), and stem leaf ratio (SLR), but only SLR varied across harvest intervals among accessions. Accessions collected across the range of Palmer amaranth in the United States displayed variation in growth and development based on differences in LAR, SLA, NAR, and SLR. Observed differences among accessions indicate the existence of Palmer amaranth ecotypes.

Keywords

Palmer amaranth, Amaranthus palmeri (S.) Wats., AMAPAGrowth analysisleaf area rationet assimilation raterelative growth ratespecific leaf areastem leaf ratioweed biology
Type
Weed Biology and Ecology
Information
Weed Science , Volume 54 , Issue 1 , February 2006 , pp. 121 - 126
Copyright
Copyright © Weed Science Society of America 

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