Halo Sky Blue
| Denomination: | 'Halo Sky Blue' |
|---|---|
| Botanical Name: | Viola ×wittrockiana |
| Applicant/Holder: |
Ball Horticultural Company 622 Town Road West Chicago, Illinois 60185 United States of America |
| Breeder: |
Troy Thorup, Ball Horticultural Company, Guadalupe, 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: | 2012-01-03 |
| Application Number: | 12-7467 |
| Grant of Rights Date: | 2014-06-12 |
| Certificate Number: | 4838 |
| Date rights surrendered: | 2019-06-12 |
Variety Description
Varieties used for comparison: 'Etain' and 'Halo Lilac'
Summary: The leaf blade of 'Halo Sky Blue' is longer than that of both reference varieties. The petiole of 'Halo Sky Blue' is longer than that of 'Halo Lilac'. The flower of 'Halo Sky Blue' is larger than that of both reference varieties. The upper, lateral and lower petals of 'Halo Sky Blue' are wider than those of 'Etain'. The upper side of the upper petal of 'Halo Sky Blue' is violet blue to light violet blue with light yellow brown at the base and a violet margin whereas the upper petal of 'Etain' is yellow green with a light violet blue margin, and for 'Halo Lilac', it is light violet blue with a blue violet margin and blue violet streaks. The upper side of the lower petal of 'Halo Sky Blue' is yellow green with yellow at the base, a violet blue to light violet blue margin and violet along the outer edge while the lower petal of 'Etain' is yellow with a light violet blue margin and blue violet along the outer edge, and for 'Halo Lilac', it is light yellow green with a blue violet margin. The lower and lateral petals of 'Halo Sky Blue' have striped markings while those of the reference varieties have none.
Description:
PLANT: upright growth habit
LEAF BLADE: elliptic and obovate, obtuse apex, attenuate to rounded base, crenate margin, medium green on upper side, absent or very sparse pubescence on upper side, medium glossiness of upper side
PEDUNCLE: absent or very sparse pubescence
SEPAL: linear, acuminate apex, medium green, absent or very sparse pubescence
UPPER PETAL: main colour of upper side is violet blue to light violet blue (RHS 93C-D), base is light yellow brown (RHS 158D), margin edge is violet (RHS N87B)
LATERAL PETAL: medium conspicuousness of striped markings
LOWER PETAL: main colour of upper side is yellow green (RHS 150D), base is yellow (RHS 9A-B), margin is violet blue to light violet blue (RHS 93C-D) with violet (RHS N87A) along outer edge, medium to strong conspicuousness of striped markings, yellow orange (closest to RHS 13A) spot
THROAT: white hairs present
SPUR: absent or very sparse pubescence, light blue-violet
Origin & Breeding History: 'Halo Sky Blue' originated from a cross-pollination conducted between the female parent, '20214-2', and the male parent, '20634-4', in April 2007 in Guadalupe, California, United States. Seeds were germinated and grown to maturity. In September 2007, one plant was selected for its flower size, its floriferousness and mounded-trailing growth habit. It has been further propagated through vegetative cuttings.
Tests & Trials: Trials for 'Halo Sky Blue' were conducted in a polyhouse during the spring of 2013 at BioFlora Inc. in St. Thomas, Ontario. The trial included a total of 20 plants each of the candidate and reference varieties. All plants were grown from rooted cuttings and transplanted into 11.5 cm pots on April 16, 2013. Observations and measurements were taken from 10 plants of each variety on May 21, 2013. All colour determinations were made using the 2007 Royal Horticultural Society (RHS) Colour Chart.
Comparison tables for 'Halo Sky Blue' with reference varieties 'Etain' and 'Halo Lilac'
Petiole length (cm)
| 'Halo Sky Blue' | 'Etain' | 'Halo Lilac' | |
|---|---|---|---|
| mean | 3.5 | 3.3 | 2.1 |
| std. deviation | 0.37 | 0.51 | 0.32 |
Leaf blade length (cm)
| 'Halo Sky Blue' | 'Etain' | 'Halo Lilac' | |
|---|---|---|---|
| mean | 5.2 | 3.5 | 4.4 |
| std. deviation | 0.27 | 0.16 | 0.34 |
Flower length (cm)
| 'Halo Sky Blue' | 'Etain' | 'Halo Lilac' | |
|---|---|---|---|
| mean | 5.3 | 4.2 | 4.6 |
| std. deviation | 0.18 | 0.13 | 0.18 |
Flower width (cm)
| 'Halo Sky Blue' | 'Etain' | 'Halo Lilac' | |
|---|---|---|---|
| mean | 5.1 | 4.0 | 4.1 |
| std. deviation | 0.22 | 0.31 | 0.27 |
Upper petal length (cm)
| 'Halo Sky Blue' | 'Etain' | 'Halo Lilac' | |
|---|---|---|---|
| mean | 2.9 | 2.4 | 2.4 |
| std. deviation | 0.16 | 0.09 | 0.15 |
Lateral petal width (cm)
| 'Halo Sky Blue' | 'Etain' | 'Halo Lilac' | |
|---|---|---|---|
| mean | 3.1 | 2.3 | 2.7 |
| std. deviation | 0.18 | 0.15 | 0.13 |
Lower petal width (cm)
| 'Halo Sky Blue' | 'Etain' | 'Halo Lilac' | |
|---|---|---|---|
| mean | 3.5 | 2.6 | 3.3 |
| std. deviation | 0.11 | 0.10 | 0.16 |
Colour of upper side of upper petal (RHS)
| 'Halo Sky Blue' | 'Etain' | 'Halo Lilac' | |
|---|---|---|---|
| main | 93C-D with 158D at base | 3D | 92C |
| secondary | N87B margin | 92B margin | 90B margin and streaks |
Colour of upper side of lower petal (RHS)
| 'Halo Sky Blue' | 'Etain' | 'Halo Lilac' | |
|---|---|---|---|
| main | 150D with 9A-B at base | 5B | lighter than 2D |
| secondary | 93C-D margin with N87A along outer edge | 92B margin with N88B along outer edge | N89D margin |
Click on image for larger view
Viola: 'Halo Sky Blue' (left) with reference varieties 'Etain' (centre) and 'Halo Lilac' (right)
Click on image for larger view
Viola: 'Halo Sky Blue' (left) with reference varieties 'Etain' (centre) and 'Halo Lilac' (right)
Click on image for larger view
Viola: 'Halo Sky Blue' (left) with reference varieties 'Etain' (centre) and 'Halo Lilac' (right)
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