RutThu5
| Denomination: | 'RutThu5' |
|---|---|
| Trade name: | Tall Guy |
| Botanical Name: | Thuja occidentalis |
| Applicant/Holder: |
University of Georgia Research Foundation, Inc. Room 627 - Boyd Graduate Studies Research Center Athens, Georgia 30602-7411 United States of America |
| Breeder: |
John Ruter, University of Georgia Research Foundation, Inc., Athens, United States of America |
| Agent in Canada: |
BioFlora Inc. 38723 Fingal Line R.R. #1 St. Thomas, Ontario N5P 3S5 Canada Tel: 519-317-7511 |
| Application Date: | 2021-11-10 |
| Provisional Protection:: | 2021-11-10 |
| Application Number: | 21-10742 |
Variety Description
Variety used for comparison: 'Emerald'
Summary: The plants of 'RutThu5' have a conic shape whereas those of 'Emerald' have a broad conic to ovoid shape. The plants of 'RutThu5' are larger than those of 'Emerald'. The distance between the new growth on the leading shoot and the branchlets for 'RutThu5' is larger than that of 'Emerald'. The branch of 'RutThu5' is larger than that of 'Emerald'.
Description:
PLANT: conic shape, medium growth speed, medium density of foliage
BRANCH: erect attitude, medium degree of stiffness
BRANCHLETS OF FIRST ORDER: many, erect attitude of spray
LEAF IN SPRING: main colour is green to bronze green, no variegation
LEAF IN SUMMER: main colour is dark green (closest to RHS 137A), no variegation
LEAF IN WINTER: main colour is bronze green, no variegation
SCALE-SHAPED LEAF: narrow acute tip, prominent glands
Origin & Breeding History: 'RutThu5' originated from an open-pollinated cross that occurred in Tifton, Georgia,
USA in 2011. The cross was between the female parent variety 'Fastigiata' and an unnamed male parent. The
new variety was selected in 2011 based on plant growth habit, foliage colour and cold hardiness. Asexual reproduction of 'RutThu5' was first conducted in 2011 in Tifton, Georgia, USA.
Tests & Trials: The comparative trial for 'RutThu5' was conducted in an outdoor irrigated container trial during the
spring of 2023 in St. Thomas, Ontario. The trial included a total of 10 plants each of the candidate and reference variety. All
plants were transplanted into 11.4 litre pots in the summer of 2022. Observations and measurements were taken on August 24, 2023. Mean differences were significant at the 5% confidence probability level based on a paired Student's t-test. All colour determinations were made using the 2015 Royal Horticultural Society (RHS) Colour Chart.
Comparison tables for 'RutThu5' with reference variety 'Emerald'
Plant height (cm)
| 'RutThu5' | 'Emerald' | |
|---|---|---|
| mean | 57.0 | 38.4 |
| std. deviation | 2.69 | 8.12 |
Plant width (cm)
| 'RutThu5' | 'Emerald' | |
|---|---|---|
| mean | 34.5 | 28.6 |
| std. deviation | 4.07 | 3.61 |
Distance between new growth on leading shoot and branchlets (cm)
| 'RutThu5' | 'Emerald' | |
|---|---|---|
| mean | 4.9 | 1.3 |
| std. deviation | 0.71 | 0.26 |
Branch length (cm)
| 'RutThu5' | 'Emerald' | |
|---|---|---|
| mean | 31.4 | 16.9 |
| std. deviation | 4.59 | 1.97 |
Branch width (cm)
| 'RutThu5' | 'Emerald' | |
|---|---|---|
| mean | 16.4 | 12.7 |
| std. deviation | 3.32 | 2.17 |
Click on image for larger view
Cedar: 'RutThu5' (left) with reference variety 'Emerald' (right)
Click on image for larger view
Cedar: 'RutThu5' (left) with reference variety 'Emerald' (right)
Click on image for larger view
Cedar: 'RutThu5' (left) with reference variety 'Emerald' (right)
- Date modified: