Tricotyledenous giant ragweed (Ambrosia trifida L.)

Eric R. Page; Sydney Meloche; Jichul Bae; R. James Larsen; Martin Laforest; Robert E. Nurse

doi:10.1139/cjps-2018-0148

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Eric R. Page,^1,*,** Sydney Meloche,¹ Jichul Bae,² R. James Larsen,¹ Martin Laforest,³ Robert E. Nurse¹

¹Harrow Research and Development Centre, Agriculture and Agri-Food Canada, 2585 County Road 20, Harro
²Agassiz Research and Development Centre, Agriculture and Agri-Food Canada, 6947 Highway 7, Agassiz,
³Saint-Jean-sur-Richelieu Research and Development Centre, Agriculture and Agri-Food Canada, 430 Goui

^*Corresponding author: E.R. Page (email: eric.page@canada.ca).
^**E.R. Page currently serves as an Associate Editor; peer review and editorial decisions regarding this manuscript were handled by Scott White.

Abstract

In this short communication, we report the observation of a tricotyledenous giant ragweed (Ambrosia trifida L.) individual. In contrast to the normal dicotyledenous pattern of phyllotaxy, this individual was observed to express three axillary meristems at each node that intersected the main stem at angles of 120°.

Citation Download Citation

Eric R. Page, Sydney Meloche, Jichul Bae, R. James Larsen, Martin Laforest, and Robert E. Nurse "Tricotyledenous giant ragweed (Ambrosia trifida L.)," Canadian Journal of Plant Science 99(1), 84-87, (5 October 2018). https://doi.org/10.1139/cjps-2018-0148

Received: 15 June 2018; Accepted: 27 September 2018; Published: 5 October 2018