AAC Chrome
| Denomination: | 'AAC Chrome' |
|---|---|
| Previously Proposed Denomination: | 'AAC Bing' |
| Botanical Name: | Pisum sativum |
| Applicant/Holder: |
Agriculture & Agri-Food Canada, Lacombe Lacombe Research Station 6000 C and E trail Lacombe, Alberta T4L 1W1 Canada |
| Breeder: |
Deng-jin Bing, Agriculture & Agri-Food Canada, Lacombe, Alberta |
| Agent in Canada: |
Agriculture & Agri-Food Canada Office of Intellectual Property and Commercialization c/o Shannon Whyte 107 Science Place Saskatoon, Saskatchewan S7N 0X2 Canada Tel: (204) 999-9887 |
| Application Date: | 2017-03-03 |
| Provisional Protection:: | 2017-03-03 |
| Application Number: | 17-9113 |
| Grant of Rights Date: | 2018-08-16 |
| Certificate Number: | 5793 |
| Grant of Rights Termination Date: | 2038-08-16 |
Variety Description
Varieties used for comparison: 'AAC Lacombe' and 'Polstead'
Summary: The fully mature plants of 'AAC Chrome' have many nodes per stem while the plants of 'AAC Lacombe' have very many nodes per stem. The stipule is longer for 'AAC Chrome' than for 'AAC Lacombe' while it is shorter and narrower than the stipule of 'Polstead'. The stem of 'AAC Chrome' is shorter than that of 'AAC Lacombe' while it is longer than that of 'Polstead'. The 100 seed weight is less for 'AAC Chrome' than for 'Polstead'.
Description:
PLANT: field type, no anthocyanin colouration, green
STEM: no anthocyanin colouration of axil, no fasciation, many nodes up to and including first fertile node
LEAFLETS: absent
STIPULE: very sparse to sparse density of flecking
TIME OF FLOWERING: mid to late season
FLOWER: maximum of two per node
STANDARD: white, level to moderately arched base
POD: entire parchment, blunt distal part, absent or very weak curvature, green
IMMATURE SEED: medium green
SEED: simple starch grains, wrinkling of cotyledons absent, yellow cotyledons, matures mid to late season
HILUM: same colour as testa
Origin & Breeding History: 'AAC Chrome' (experimental designation 'P0520-116') originated from the cross 'Polstead' / 'CDC715S-4' conducted in 2004 at the Lacombe Research and Development Centre, Agriculture and Agri-Food Canada, Lacombe, Alberta. The breeding method involved pedigree selection in combination with single seed descent. 'AAC Chrome' was derived from a single F10 line and selected in 2011 for its yield, seed size, resistance to lodging and disease resistance. It was further evaluated in the 2014-2015 Western Canada Field Pea Cooperative Registration Trials.
Tests & Trials: The comparative tests and trials for 'AAC Chrome' were conducted at the Lacombe Research and Development Centre, Agriculture and Agri-Food Canada, Lacombe Alberta, during the 2016 and 2017 growing seasons. The trials were established using a complete randomized block design consisting of 4 replications per variety. Each replicate consisted of 4 rows spaced 25 cm apart, with a row length of 5.0 metres and a planting density of 85 seeds per square metre. The measured characteristics were based on 20 measurements per variety per year and there were 8 measurements used for 100 seed weight. The mean differences were significant at the 5% confidence probability level based on a paired Student's t-test.
Comparison tables for 'AAC Chrome' with reference varieties 'AAC Lacombe' and 'Polstead'
Stipule length (mm)
| 'AAC Chrome' | 'AAC Lacombe' | 'Polstead' | |
|---|---|---|---|
| 2016 mean | 75.00 | 68.80 | 82.80 |
| 2016 std. deviation | 5.50 | 6.10 | 7.50 |
| 2017 mean | 71.80 | 62.10 | 80.10 |
| 2017 std. deviation | 10.00 | 9.500 | 10.30 |
Stipule width (mm)
| 'AAC Chrome' | 'AAC Lacombe' | 'Polstead' | |
|---|---|---|---|
| 2016 mean | 33.70 | 34.20 | 38.80 |
| 2016 std. deviation | 3.90 | 4.00 | 3.70 |
| 2017 mean | 30.90 | 31.20 | 38.20 |
| 2017 std. deviation | 5.60 | 6.50 | 6.80 |
Stem length (mm)
| 'AAC Chrome' | 'AAC Lacombe' | 'Polstead' | |
|---|---|---|---|
| 2016 mean | 94.40 | 107.60 | 76.40 |
| 2016 std. deviation | 9.70 | 6.80 | 5.90 |
| 2017 mean | 96.90 | 106.80 | 74.60 |
| 2017 std. deviation | 5.90 | 8.90 | 7.50 |
Number of nodes per stem (count)
| 'AAC Chrome' | 'AAC Lacombe' | 'Polstead' | |
|---|---|---|---|
| 2016 mean | 16.80 | 21.10 | 15.00 |
| 2016 std. deviation | 1.20 | 1.40 | 0.90 |
| 2017 mean | 13.60 | 19.10 | 13.10 |
| 2017 std. deviation | 1.40 | 1.60 | 1.40 |
Seed weight (grams per 100 seeds)
| 'AAC Chrome' | 'AAC Lacombe' | 'Polstead' | |
|---|---|---|---|
| 2016 mean | 238.80 | 246.80 | 247.00 |
| 2016 std. deviation | 2.50 | 17.50 | 2.71 |
| 2017 mean | 248.30 | 263.50 | 263.00 |
| 2017 std. deviation | 6.90 | 6.03 | 7.07 |
Click on image for larger view
Pea: 'AAC Chrome' (left) with reference varieties 'AAC Lacombe' (centre) and 'Polstead' (right)
Click on image for larger view
Pea: 'AAC Chrome' (left) with reference varieties 'AAC Lacombe' (centre) and 'Polstead' (right)
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