V32
| Denomination: | 'V32' |
|---|---|
| Botanical Name: | Thuja occidentalis |
| Applicant/Holder: |
Brodeur, Alain 1469, Rg 6 Ste-Cécile-de-Milton, Quebec J0E 2C0 Canada |
| Breeder: |
Alain Brodeur, Ste-Cécile-de-Milton, Quebec |
| Agent in Canada: |
IQDHO 3230 rue sicotte E-307 Sainte-Hyacinthe, Quebec J2S 2M2 Canada Tel: 450-778-6514 |
| Application Date: | 2023-03-23 |
| Provisional Protection:: | 2023-03-23 |
| Application Number: | 23-11249 |
Variety Description
Varieties used for comparison: 'Nigra', 'A112' and 'V38'
Summary: During active growth, 'V32' has an ovoid plant habit while 'V38' has a broad columnar plant habit. The plant growth rate for 'V32' is slower than that of 'Nigra' and 'V38'. The branches of 'V32' have a semi-erect attitude while those of 'A112' have an erect attitude. The branch of 'V32' has fewer branchlets of the first order than those of the reference varieties. The branchlet of the first order of 'V32' is a twisted type while that of 'Nigra' is a flat type. The branchlets of the penultimate and last order of 'V32' are larger than those of 'Nigra' and 'V38'. In the summer of the current year, the leaf on the branchlets of the penultimate and last order of 'V32' are light green while those of the reference varieties are dark green. In the winter of the current year, the leaf on the branchlets of the penultimate and last order of 'V32' are dark green to brown green while those of 'V38' are green brown. In winter, apical variegation is present on the branchlets of the penultimate and last order for 'V32' while it is absent on those of 'Nigra' and 'V38'. The leaf of 'V32' has a medium number of prominent glands while that of 'A112' has many prominent glands. The leaf of 'V32' is thicker than the leaf of 'Nigra' and thinner than that of 'A112'. The leaf of 'V32' has a weak to medium degree of glossiness while that of 'A112' has a medium to strong degree of glossiness. In late summer, cones are absent on the branch of 'V32' while they are present on the branch of 'Nigra'.
Description:
PLANT: ovoid habit during active growth, medium growth rate, medium density of branching, semi-erect branch attitude, branches of medium to strong rigidity
BRANCH: few branchlets of first order, medium distance between new branchlets on leading shoot, cones absent in late summer
BRANCHLET OF FIRST ORDER: twisted type, semi-erect planar spray arrangement
BRANCHLET OF PENULTIMATE AND LAST ORDER: long, medium width, no variegation in spring or summer, green brown (RHS 152A) apical variegation present in winter
LEAF: only scale-shaped type, short to medium length, medium width, curved along longitudinal axis, acute tip, medium number of prominent glands, medium thickness, weak to medium glossiness
LEAF ON BRANCHLET OF PENULTIMATE AND LAST ORDER: dark green (RHS 144A) in spring, light green (RHS 144B) in summer, dark green to brown green (RHS 144A to 146B) in winter
Origin & Breeding History: The variety 'V32' originated as a natural plant mutation of the variety 'Nigra' discovered in the summer of 2006 in Sainte-Cécile-de-Milton, Québec, Canada. The new variety was selected based on general plant structure, foliage density as well as cone and flower bud production. Asexual reproduction was first conducted in Sainte-Cécile-de-Milton, Québec by stem cuttings in 2007.
Tests & Trials: The comparative trial for 'V32' was conducted in an outdoor field production trial in 2023 in Sainte-Cécile-de-Milton, Québec. The trial included a total of 8 plants of each of the candidate and reference varieties. The plants were situated in rows spaced approximately 90 cm apart with 1 metre spacing between rows. All colour determinations were made using the 2007 Royal Horticultural Society (RHS) Colour Chart. Measured characteristics were based on a minimum of 8 measurements per variety per year. Mean differences were significant at the 5% probability level based on a paired Student`s t-test.
Comparison tables for 'V32' with reference varieties 'Nigra', 'A112' and 'V38'
Plant growth from April 21 to September 26, 2023 (cm)
| 'V32' | 'Nigra' | 'A112' | 'V38' | |
|---|---|---|---|---|
| mean | 47.1 | 55.3 | 46.6 | 53.9 |
| std. deviation | 5.27 | 8.68 | 12.15 | 6.25 |
Number of branchlets of first order per branch (count)
| 'V32' | 'Nigra' | 'A112' | 'V38' | |
|---|---|---|---|---|
| mean | 11.8 | 14.0 | 12.9 | 15.5 |
| std. deviation | 1.19 | 0.50 | 0.69 | 1.75 |
Length of branchlets of penultimate and last order (cm)
| 'V32' | 'Nigra' | 'A112' | 'V38' | |
|---|---|---|---|---|
| mean | 8.3 | 7.6 | 8.2 | 6.9 |
| std. deviation | 0.67 | 0.68 | 0.58 | 0.79 |
Width of branchlets of penultimate and last order (cm)
| 'V32' | 'Nigra' | 'A112' | 'V38' | |
|---|---|---|---|---|
| mean | 36.1 | 28.7 | 37.5 | 29.5 |
| std. deviation | 4.63 | 3.84 | 4.25 | 4.44 |
Main colour of current year leaf on branchlets of penultimate and last order (RHS)
| 'V32' | 'Nigra' | 'A112' | 'V38' | |
|---|---|---|---|---|
| summer | 144B | 143B | 144A | 143B |
| winter | 144A to 146B | 146B | 146B | 152A |
Leaf thickness (mm)
| 'V32' | 'Nigra' | 'A112' | 'V38' | |
|---|---|---|---|---|
| mean | 0.8 | 0.6 | 1.0 | 0.8 |
| std. deviation | 0.09 | 0.10 | 0.07 | 0.09 |
Number of cones per branch (count)
| 'V32' | 'Nigra' | 'A112' | 'V38' | |
|---|---|---|---|---|
| mean | 0.0 | 6.6 | 0.1 | 0.1 |
| std. deviation | 0.0 | 6.49 | 0.45 | 0.45 |
Click on image for larger view
Cedar: 'V32' (right) with reference varieties 'Nigra' (left), 'A112' (centre left) and 'V38' (centre right)
Click on image for larger view
Cedar: 'V32' (centre right) with reference varieties 'Nigra' (left), 'A112' (centre left) and 'V38' (right)
Click on image for larger view
Cedar: 'V32' (centre right) with reference varieties 'Nigra' (centre left), 'A112' (left) and 'V38' (right)
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