CDC Envy
| Denomination: | 'CDC Envy' |
|---|---|
| Previously Proposed Denomination: | 'PT5003' |
| Botanical Name: | Triticum aestivum |
| Applicant/Holder: |
University of Saskatchewan Crop Development Centre 4D36 Agriculture Building, 51 Campus Drive Saskatoon, Saskatchewan S7N 5A8 Canada |
| Breeder: |
Pierre Hucl, University of Saskatchewan, Saskatoon, Saskatchewan |
| Application Date: | 2021-04-28 |
| Provisional Protection:: | 2021-04-28 |
| Application Number: | 21-10479 |
Variety Description
Varieties used for comparison: 'AAC Starbuck', 'CDC Bradwell' and 'CDC Go'
Summary: At booting, the flag leaf of 'CDC Envy' is shorter than that of 'CDC Bradwell' and it is narrower than those of 'AAC Starbuck' and 'CDC Bradwell'. At heading, the glaucosity on the spike of 'CDC Envy' is of a weak degree whereas the glaucosity is of a medium degree on that of 'CDC Bradwell' and of a strong degree on that of 'CDC Go'. The spike, excluding the awns, of 'CDC Envy' is longer than the spike of 'CDC Bradwell'. The plants of 'CDC Envy' mature earlier than the plants of 'CDC Bradwell'. At maturity, the hairiness of the convex surface of the apical rachis segment for 'CDC Envy' is dense whereas it is sparse for 'CDC Bradwell'.
Description:
PLANT: spring type, common wheat, erect growth habit at 5 to 9 tiller stage, medium to high frequency of plants with recurved flag leaves, heads emerge early, matures early season
SEEDLING (4-leaf stage): absent or very weak to weak intensity of anthocyanin colouration of coleoptile, glabrous sheath and blade of lower leaves
FLAG LEAF: absent or very weak to weak intensity of anthocyanin colouration of auricles, absent or very weak to weak glaucosity of sheath, glabrous blade and sheath
CULM: medium glaucosity, curved neck
STRAW (at maturity): thin pith in cross-section, no anthocyanin colouration
SPIKE: weak glaucosity at heading, tapering shape in profile, medium density, yellow at maturity, erect attitude, dense hairiness of convex surface of apical rachis segment
AWNS: present, shorter than spike, white at maturity
LOWER GLUME: medium length and width, glabrous, medium extent of internal hairs
LOWER GLUME SHOULDER: medium width, slightly sloping to straight shape
LOWER GLUME BEAK: long, slightly to moderately curved
LOWEST LEMMA: straight beak
KERNEL: hard red type, medium red, medium size, medium length and width, ovate shape, rounded cheek shape, medium length brush hairs, crease of medium width and depth
GERM: medium sized, round to broad elliptical shape
Origin & Breeding History: 'CDC Envy' (experimental designations PT5003 and W15423) originated from a controlled cross conducted in a greenhouse in Saskatoon, Saskatchewan in 2010 between BW781.86 and the F1 of a cross between W09130 and the BC1 of a backcross between 'CDC Go' (recurrent parent) and 'CDC Alsask'. The resulting F1 grown in a growth chamber was selected for the presence of Lr22a, a molecular marker for the adult plant leaf rust resistance gene. From 2011 to 2012, the F2 to F4 generations were bulked and advanced in Saskatoon or a contra nursery in New Zealand. In 2013 and 2014, the F5 and F6 generations, respectively, were grown as hill plots in Saskatoon and evaluated for disease reactions in a leaf and stem rust irrigated nursery. A bulked F6 hill was used as a seed source for replicated yield testing in 2015. Replicated yield testing occurred using the designation W15423 in 2016 and 2017. W15423 was then advanced and further evaluated as PT5003 in the Parkland Cooperative Test from 2018 to 2020. Breeder seed was established at the F12 generation in 2020.
Tests & Trials: The comparative trials for 'CDC Envy' were conducted at the University of Saskatchewan, Crop Science Field Facility during the 2021 and 2022 growing seasons. There were 4 replications per variety arranged in an RCB design. Plots consisted of 5 rows, each row 3.6 metres long with an inter-row spacing of 0.24 metres. Measured characteristics were based on 20 measurements per variety per year, except for kernel weight which was based on 4 measurements per variety per year. Mean differences were significant at the 5% probability level based on LSD values.
Comparison tables for 'CDC Envy' with reference varieties 'AAC Starbuck', 'CDC Bradwell' and 'CDC Go'
Flag leaf length (cm)
| 'CDC Envy' | 'AAC Starbuck' | 'CDC Bradwell' | 'CDC Go' | |
|---|---|---|---|---|
| mean 2021 (LSD=1.5) | 14.6 | 18.3 | 17.6 | 16.2 |
| std. deviation 2021 | 2.8 | 2.1 | 1.9 | 2.4 |
| mean 2022 (LSD=1.3) | 20.7 | 20.9 | 24.2 | 17.6 |
| std. deviation 2022 | 2.4 | 2.1 | 1.9 | 1.6 |
Flag leaf width (mm)
| 'CDC Envy' | 'AAC Starbuck' | 'CDC Bradwell' | 'CDC Go' | |
|---|---|---|---|---|
| mean 2021 (LSD=0.8) | 12.2 | 15.3 | 15.3 | 13.5 |
| std. deviation 2021 | 1.4 | 1.1 | 1.1 | 1.2 |
| mean 2022 (LSD=0.6) | 12.2 | 15.0 | 15.4 | 12.5 |
| std. deviation 2022 | 1.2 | 0.9 | 0.8 | 0.8 |
Days to maturity (number of days from planting to maturity)
| 'CDC Envy' | 'AAC Starbuck' | 'CDC Bradwell' | 'CDC Go' | |
|---|---|---|---|---|
| mean 2021 | 89.0 | 89.0 | 91.0 | 89.0 |
| mean 2022 | 93.8 | 98.3 | 98.3 | 94.5 |
Spike length (excluding awns) (cm)
| 'CDC Envy' | 'AAC Starbuck' | 'CDC Bradwell' | 'CDC Go' | |
|---|---|---|---|---|
| mean 2021 (LSD=0.4) | 8.5 | 8.7 | 8.0 | 8.5 |
| std. deviation 2021 | 0.4 | 0.6 | 0.6 | 0.7 |
| mean 2022 (LSD=0.2) | 8.1 | 8.2 | 7.8 | 7.9 |
| std. deviation 2022 | 0.3 | 0.4 | 0.4 | 0.4 |
Thousand kernel weight (grams per 1000 kernels) (g)
| 'CDC Envy' | 'AAC Starbuck' | 'CDC Bradwell' | 'CDC Go' | |
|---|---|---|---|---|
| mean 2021 (LSD=1.3) | 34.7 | 37.6 | 34.0 | 40.4 |
| std. deviation 2021 | 1.1 | 0.8 | 0.9 | 0.3 |
| mean 2022 (LSD=0.9) | 36.2 | 38.7 | 35.4 | 40.2 |
| std. deviation 2022 | 0.8 | 0.7 | 0.2 | 0.5 |
Click on image for larger view
Wheat: 'CDC Envy' (left) reference varieties 'CDC Bradwell' (centre left), 'AAC Starbuck' (centre right) and 'CDC Go' (right)
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