Market Class: Yellow Pea
Year Released to Seed Growers: 2018
Sub-licensed Outside of SK: SeCan
International Distribution Rights: No
Breeder: Dr. Tom Warkentin, Crop Development Centre, University of Saskatchewan, Saskatoon, SK
Plant Breeders Rights: PBR ’91
Description
CDC Lewochko is a high yielding mid-maturing yellow cotyledon, semi-leafless field pea variety that has very good seed characteristics. In 10 years of testing in the Co-op and Regional trials in Saskatchewan, CDC Lewochko yielded 104% of the check variety CDC Amarillo (Table 1). CDC Lewochko has the highest protein among the yellow pea varieties currently available (+0.9% vs. CDC Amarillo). CDC Lewochko has PBR’91 protection. CDC Lewochko ranks high for yield stability.
Statistical analysis of 8 years of long-term RVT data ranked CDC Lewochko 7th from the top for yield in the south and 6th in the north among 16 historical and new yellow pea varieties (Figure 1).
Strengths
- Good yield in both north and south geographies
- Rated high for yield stability
- Improved seed characteristic package – rated good for:
- Resistance to seed coat breakage
- Resistance to dimpling (better than CDC Amarillo)
- Shape (round)
- Greenness (less green coloration, better than CDC Inca or CDC Spectrum)
- Highest protein for yellow pea varieties currently available
- Medium-long vine length, taller than CDC Amarillo
- Good lodging resistance, similar to CDC Spectrum and CDC Amarillo, better than CDC Inca or CDC Meadow
- Powdery mildew resistance
Neutral
- Medium seed size (similar to CDC Amarillo)
- Medium maturity
- Fair resistance to Mycosphaerella blight and Fusarium root rot
Table 1: Agronomic performance of yellow pea varieties from Co-op and Regional Trials in Saskatchewan
| Variety | Year Registered | Years Tested | Yield (% Amarillo) | Relative Maturity | Lodging (1-9)2 | Vine Length (cm) | Resistance to: | Seed Weight (g/1000) | Protein % vs. CDC Amarillo | ||||||
| Area 1, 2 & South 31 | Area North 3 & 41 | Mycosphaerella Blight3 | Powdery Mildew | Fusarium Root Rot | Seed coat breakage | Seed coat dimpling4 | Greeness5 | ||||||||
| CDC Amarillo | 2012 | 14 | 100 | 100 | M | 3.5 | 85 | 4.5 | R | MR | F | F | G | 230 | 23 |
| AAC Aberdeen | 2019 | 5 | 108 | 107 | M | 3.5 | 85 | 4.5 | R | I | F | F | G | 250 | -1.1 |
| AAC Beyond | 2021 | 5 | 106 | 108 | E | 4.5 | 80 | 5 | R | MR | F | F | G | 220 | 0.3 |
| Boost | 2022 | 4 | 102 | 101 | M | 4.5 | 90 | 4.5 | R | MR | G | G | G | 230 | 1.2 |
| CDC Boundless | 2023 | 4 | 109 | 105 | M | 3 | 90 | 4.5 | R | MR | G | G | G | 230 | 0.8 |
| CDC Canary | 2017 | 10 | 99 | 100 | E | 3.5 | 85 | 4.5 | R | I | G | F | F | 230 | 0.1 |
| Caphorn | 2023 | 4 | 100 | 98 | M | 4 | 80 | 5 | R | MR | F | G | G | 260 | 1.7 |
| AAC Carver | 2014 | 7 | 102 | 100 | E | 4 | 85 | 5 | R | I | G | F | G | 240 | -1.3 |
| AAC Chrome | 2017 | 7 | 106 | 104 | M | 4.5 | 75 | 4.5 | R | I | G | G | G | 240 | -1 |
| CDC Citrine | 2022 | 6 | 108 | 110 | M | 4 | 85 | 4 | R | MR | G | G | G | 220 | 0.3 |
| CDC Engage | 2023 | 4 | 107 | 107 | M | 3.5 | 85 | 4.5 | R | I | G | G | G | 240 | 0.7 |
| CDC Hickie | 2021 | 7 | 107 | 106 | M | 3.5 | 85 | 4.5 | R | MR | G | G | G | 230 | 0.5 |
| CDC Inca | 2015 | 12 | 104 | 102 | M | 4 | 85 | 4.5 | R | I | G | G | F | 230 | -0.6 |
| AAC Julius | 2021 | 5 | 110 | 105 | E | 4 | 85 | 4.5 | R | MR | G | G | G | 210 | 0.4 |
| CDC Lewochko | 2018 | 10 | 104 | 104 | M | 3.5 | 90 | 4.5 | R | I | G | G | G | 230 | 0.9 |
| AAC McMurphy | 2023 | 3 | 102 | 101 | M | 3.5 | 85 | 4.5 | R | MR | F | F | G | 250 | 0.6 |
| CDC Meadow | 2006 | 12 | 93 | 90 | E | 4 | 85 | 5 | R | I | G | G | G | 220 | -0.5 |
| AAC Planet | 2022 | 3 | 107 | 102 | M | 3.5 | 90 | 4.5 | R | MR | G | G | G | 220 | 1.2 |
| AAC Profit | 2019 | 6 | 103 | 109 | M | 4.5 | 90 | 4.5 | R | I | F | G | G | 230 | 0.8 |
| CDC Spectrum | 2016 | 12 | 105 | 103 | M | 3.5 | 85 | 4.5 | R | I | G | G | F | 240 | 0.7 |
| CDC Tollefson | 2021 | 7 | 109 | 108 | M | 3 | 90 | 4 | R | MR | G | G | G | 240 | -0.3 |
| CDC 5791 | 2024 | 4 | 107 | 103 | M | 4 | 90 | 4.5 | R | MR | G | G | G | 250 | 0.6 |
| CDC 5845 | 2024 | 4 | 108 | 107 | M | 3.5 | 90 | 4 | R | MR | G | G | G | 240 | 0.6 |
Source: Varieties of Grain Crops (SaskSeed Guide)
1Area 1: Brown soil zone; Area 2: Dark brown; Area 3: Black; Area 4: Dark grey
2Lodging score: 1 = Upright; 9 = Completely lodged
3Mycosphaerella blight score: 1 = No disease, 9 = Completely blighted
4Seed coat dimpling: Very Good = 0-5%; Good = 6-20%; Fair = 21-50%
5Greenness: Good = 0-15%; Fair = 16-40%
Figure 1. Relative yield ranking of yellow pea varieties from 8 years of RVT data in SK in the south (left) and north (right).
