ONTARIO
Bulbosum Method in Eastern Canada: An observation
T. M. Choo1, L. Shugar2, and D. J. M. Bastien3
1 Eastern Cereal and Oilseed Research Centre, Ottawa, Canada K1A 0C6; 2 W. G. Thompson & Sons Limited, Ailsa Craig, Ontario, Canada N0M 1A0; 3 Semico Inc., Ste-Rosalie, Quebec, Canada J0H 1X0

In Canada, the Seeds Act states that no person shall sell or advertise for sale in Canada or import into Canada seed of a variety that is not registered in the prescribed manner. Varieties are registered only on the basis of merit, and they must be recommended for registration by at least one of the regional committees. There are three cereal regional committees in Eastern Canada that recommend varieties for registration, namely the Atlantic Advisory Committee on Cereal and Protein Crops (AACCPC), Ontario Cereal Crops Committee (OCCC), and Comité des céréales du Conseil des productions végétales du Québec. Every year, these committees meet in January or February to deliberate variety recommendations for registration in Canada.

In 1996, eight barley varieties from Eastern Canada were supported for registration by AACCPC and/or OCCC. These eight varieties differ in growth habit, spike type, pedigree, and origin (Table 1). However, they share a common feature in that all were derived from F1 hybrids by the bulbosum method. [Note that the bulbosum method was first developed by Kasha and Kao at the University of Guelph, Ontario in 1970.] It took only seven to nine years to develop these varieties after their parents were crossed to produce F1 seeds.

The year of 1996 is unique in two aspects: all new varieties are doubled-haploid lines and a large number of barley varieties were developed by the bulbosum method. This uniqueness probably will not be repeated in the future. W. G. Thompson & Sons uses solely the bulbosum method for its barley breeding program, and will continue to do so. Semico Inc. , in collaboration with Laval University, is now using the anther culture method to produce doubled-haploid lines for its barley breeding program. The Eastern Cereal and Oilseed Research Centre will continue to use the bulbosum method to produce doubled-haploid lines, but mainly for use in genetic studies.

Table 1. Eight Eastern Canada barley cultivars supported for reistration by AACCPC and/or

OCCC.
Cultivar Habit Spike Pedigree Cross Institution
DB202 Spring 2-row Morrison/AB94-11 1987-88 winter Agriculture Canada
T090-017 Spring 2-row E647/Morrison 1989 winter Thompson's
T086-156 Spring 2-row Lester/TBR635-2 1989 winter Thompson's
T081-009 Spring 2-row E650-13/E658-44 1989 winter Thompson's
T103-003 Spring 2-row Winthrop/Lester 1989 winter Thompson's
HD87-18.14 Spring 2-row Morrison/Helena 1987  Semico
HD87-12.1 Spring 6-row Maskot/Chapais 1987 Semico
H30-11 Winter 6-row Tapir/Wisor 1989 winter Thompson's
 

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