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REGISTRATIONS OF CULTIVARS

Registration of ‘Canstar’ Field Pea

^a Agric. and Agri-Food Canada Lacombe Research Centre, 6000 C & E Trail, Lacombe, AB, Canada T4L 1W1
^b Agric. and Agri-Food Canada, Morden Research Station, Unit 100-101, Route 100, Morden, MB, Canada R6M 1Y5
^c Crop Development Centre, Univ. of Saskatchewan, 51 Campus Dr., Saskatoon, SK, Canada S7N 5A8
^d Agric. and Agri-Food Canada Eastern Cereal and Oilseed Research Centre, K.W. Neatby Building, 960 Carling Ave., Ottawa, ON, Canada K1A 0C6
^e Agric. and Agri-Food Canada, Semiarid Prairie Agric. Research Centre, P.O. Box 1030, Swift Current, SK, Canada S9H 3X2
^f Agric. and Agri-Food Canada, Melfort Research Farm, P.O. Box 1240, Melfort, SK, Canada S0E T4L
^g Agric. and Agri-Food Canada Semiarid Prairie Agric. Research Centre, Indian Head Research Farm, P.O. Box 760, Indian Head, SK, Canada S0G 2K0

^* Corresponding author (bingd{at}agr.gc.ca)

‘Canstar’ (Reg. no. CV-25, PI 642785), a semileafless field pea (Pisum sativum L.) cultivar with yellow cotyledons, medium seed size, and resistance to powdery mildew, caused by Erysiphe pisi DC. var. pisi, was developed at Agriculture and Agri-Food Canada (AAFC), Morden Research Station (MRS), Morden, MB, Canada. Registration no. 5894 was issued for Canstar on 8 Sep. 2005 by the Variety Section, Plant Health and Plant Products Division, Canadian Food Inspection Agency.

Canstar was derived from the cross 4–0359.016/‘Aladin’ made at AAFC, MRS in 1995. Breeding line 4–0359.016 was a semileafless, powdery mildew resistant yellow pea line developed by Danisco Seeds, Denmark, and registered later as cultivar ‘DS Stalwarth’ (Andersen et al., 2001). Aladin, a yellow field pea cultivar developed by Nickerson Seed, UK, was susceptible to powdery mildew. Powdery mildew resistant plants were selected in the field from the F₂ population of the cross at MRS in 1996. The F₃–F₄ generations were advanced in the greenhouse using single seed descent in the winter of 1996–1997. The F₅ was grown at Morden, MB, Canada, in the summer of 1997. One of the selected plants based on plant type, maturity, and resistance to powdery mildew from the F₅ population was advanced to the F₆ generation in a progeny row at Brawley, CA, during the winter of 1997–1998. This progeny row was bulk-harvested and named line 9561098. It was evaluated in a preliminary yield trial at Morden in the summer of 1998 at the generation of F₇. In 1999, line 9561098 was evaluated in replicated yield trials at the generation of F₈ at six locations in Canada with three locations in Manitoba (MRS, Morden Berdick, and Portage la Prairie), one location in Saskatchewan (Melfort), and two locations in Alberta (Lacombe and Edmonton). In 2000 (F₉), it was tested at five locations in Manitoba (MRS, Morden Berdick, Portage la Prairie, Thornhill, and Roblin), four locations in Saskatchewan (Indian Head, Melfort, Scott, and Swift Current), three locations in Alberta (Lacombe, Beaverlodge, and Grande Prairie), and one location in Quebec (St. Bruno). It was tested in the 2002–2003 Field Pea Cooperative Test-B as MP1814. The breeder seed of Canstar was formed from one bulk-harvested plot at the F₉ generation.

Canstar is adapted to all field pea-growing regions in western Canada. Compared with the check cultivars Carrera, Eclipse, and CDC Mozart over 18 site-years in the 2002–2003 Field Pea Cooperative Test-B, Canstar yielded 3695 kg ha^–1, being 15, 3, and 9% higher than Carrera, Eclipse, and CDC Mozart, respectively. Canstar matured at 96 d, identical to Carrera, 1 d earlier than CDC Mozart, and 2 d earlier than Eclipse. Plant height of Canstar was 66 cm, taller than Carrera, Eclipse, and CDC Mozart by 17, 5, and 10 cm, respectively. The preharvest lodging score over 18 site-years was 3.5 for Canstar, 4.9 for Carrera, 3.5 for Eclipse, and 4.8 for CDC Mozart based on a 1-to-9 scale (1 = upright, 9 = prostrate).

Canstar has white flowers, yellow cotyledons, an opaque seed coat color, and round seed shape. The 1000-seed weight was 227 g for Canstar compared with 242 g for Carrera, 238 g for Eclipse, and 204 g for CDC Mozart. Seed shape, scored on a 1-to-5 scale (1 = spherical, 2.5 = round and 5 = cubed), was 2.5, 2.6, 2.7, and 2.5 for Canstar, Carrera, Eclipse, and CDC Mozart, respectively. Crude protein content was 23% for Canstar compared with 24% for Carrera, Eclipse, and CDC Mozart.

In cooking quality test, the puree color was visually scored on a 1-to-5 scale (1 = very good and 5 = very poor). Canstar and the check cultivars had the same score of 3.0. Granulation of pulp (scored on a 1-to-5 scale, 1 = very good, 5 = very poor) was 2.9 for Canstar, 2.5 for Carrera, 3.3 for Eclipse, and 3.0 for CDC Mozart. Puree viscosity was measured by the distance (cm) that 50 mL of puree advanced down the sloped Cenco Consistometer in 10 s, where 1 indicated the highest viscosity (well-cooked) and 24 indicated the lowest viscosity (poorly cooked). Canstar had a viscosity score of 18 compared with 21 for Carrera, 22 Eclipse, and 21 for CDC Mozart.

Canstar is resistant to powdery mildew, as are Eclipse and CDC Mozart, while Carrera is susceptible to powdery mildew. Canstar is susceptible to Mycosphaerella blight, a disease caused by Mycosphaerella pinodes (Berk. & Blox.) Vestergr., with a disease severity score of 7.0 (based on a scale of 1–9, where 1 = no disease, 9 = whole plant was severely blighted), similar to the check cultivars Carrera (6.5), Eclipse (6.3), and CDC Mozart (6.7).

Breeder seed of Canstar is being maintained at AAFC Research Farm, Indian Head, SK, Canada S0G 2K0. Canstar has been released on an exclusive basis through a licensing arrangement to Canseed Canada Ltd. (P.O. Box 1155, Stettler, AB, Canada, T0C 2L0). Pedigreed seed of Canstar can be purchased from Canseed Ltd. Plant Breeder's Rights for Canstar have been applied for from the Canadian Food Inspection Agency (application no. 04–4208). Contact Agriculture and Agri-Food Canada (AAFC) Lacombe Research Centre (6000 C and E Trail, Lacombe, AB, Canada, T4L 1W1) for all seed requests. No seed will be distributed without written permission for 18 yr after publication in Crop Science without written permission from AAFC, after which time seed will also be available from the National Plant Germplasm System (NPGS).

ACKNOWLEDGMENTS

The authors greatly appreciate the financial support for the development of Canstar by the Manitoba Pulse Growers Association, Agri-Food Research Development Initiatives of the Manitoba government, SeCan Association, the Alberta Pulse Commission and the Matching Investment Initiative program of Agriculture and Agri-Food Canada.

NOTES

Contribution No. 1096. Registration by CSSA.

Received for publication May 3, 2006.

REFERENCES

• Andersen, L., T. Warkentin, O. Philipp, A. Xue, and A. Sloan. 2001. DS Stalwarth field pea. Can. J. Plant Sci. 81:281–282.

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