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Cellular Alterations Resulting from Foliar Applications of HOE-39866

Published online by Cambridge University Press:  12 June 2017

Robin R. Bellinder
Affiliation:
Dep. Hortic., Virginia Polytech. Inst, and State Univ., Blacksburg, VA 24061
Robert E. Lyons
Affiliation:
Dep. Hortic., Virginia Polytech. Inst, and State Univ., Blacksburg, VA 24061
Stephen E. Scheckler
Affiliation:
Dep. Hortic., Virginia Polytech. Inst, and State Univ., Blacksburg, VA 24061
Henry P. Wilson
Affiliation:
Eastern Shore Agric. Res. Stn., Virginia Polytech. Inst, and State Univ., Painter, VA 23420

Abstract

Formulated and technical grade HOE-39866 [ammonium-(3-amino-3-carboxypropyl) methylphosphinate] at concentrations of 10–1, 10–2, and 10–3M were applied to leaf blade tissues of nonreproductive adult redroot pigweed (Amaranthus retroflexus L. # AMARE) and fall panicum (Panicum dichotomiflorum Michx. # PANDI). Tissues were sampled at regular intervals after treatment and prepared for light microscopic examination. The major response of both species involved rupture and contortion of the interveinal mesophyll cells with concomitant disorganization of the bundle sheath cells. Rapid epidermal collapse occurred in redroot pigweed but not in fall panicum. The absence of adjuvants resulted in nonuniform symptom expression as herbicide droplets accumulated in depressions and along leaf margins. No other adjuvant-specific effect was observed. Herbicide concentration did not alter the final response but the time-to-expression increased as concentration decreased.

Type
Physiology, Chemistry, and Biochemistry
Copyright
Copyright © 1987 by the Weed Science Society of America 

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