Resistant canola, triazine

BXN canola was used in less than 100000 acres at its peak and has since been withdrawn from the market. Triazine resistant canola, achieved through a selection process, has been used on a limited number of acres and never gained popularity. 

Beversdorf, W.D., D.J. Hume, and M.J. Donnelly-Vanderloo (1988). Agronomic performance of triazine-resistant and susceptible reciprocal spring canola hybrids. Crop Sci., 28 932-934. 

Vaughn, K.C. (1986). Characterization of triazine-resistant and susceptible isolines of canola (Brassica napus L.). Plant Physiol., 82 859-863. 

Bettini, P, S. McNally, M. Sevignac, H. Darmency, J. Gasquez, and M. Dron (1987). Atrazine resistance in Chenopodium album Low and high levels of resistance to the herbicide are related to the same chloroplast psb A gene mutation. Plant Physiol., 84 1442-1446. Beversdorf, W.D., B.J. Hume, and M.J. Donelly-Vanderloo (1988). Agronomic performance of triazine-resistant and susceptible reciprocal spring canola hybrids. Crop Sci., 22 932-934. 

Canada cultivates 90% of the canola acres in North America and is the focus of this survey. The three primary commercial herbicide resistant traits in canola are glyphosate resistance (Roundup Ready , RR), glufosinate resistance (Liberty Link , LL), and imidazolinone resistance (Clearfield , CF). There are two other herbicide resistant traits that are used on a relatively small number of acres and these are bromoxynil resistance (BXN ) and triazine tolerance (TT). In 2004, herbicide resistant traits were grown on over 90% of the 12-13 million total canola acres in Canada (Fig. 6.1.5) [7, 8]. 

---