Tor Bule

Torenia

Variety Description

Variety used for comparison: 'Sunrenirabu' (Summer Wave Large Blue)

Summary: 'Tor Bule' has longer stem internodes than 'Sunrenirabu'. 'Tor Bule' has a longer leaf blade length and longer calyx length than 'Sunrenirabu'. 'Tor Bule' has weaker anthocyanin colouration in the calyx than 'Sunrenirabu'. The upper corolla lobe of 'Tor Bule' is dark violet with light violet blue secondary colour on the inner side while the upper corolla lobe of 'Sunrenirabu' is violet blue with no secondary colour. The lower corolla lobe of 'Tor Bule' is a darker blue violet than the lower corolla lobe of 'Sunrenirabu'. The outer side of the corolla tube is violet blue for 'Tor Bule' while it is blue violet for 'Sunrenirabu'.

Description:

PLANT: semi-erect growth habit
STEM: absent to sparse pubescence, medium to dark green, medium anthocyanin colouration

LEAF BLADE: ovate, narrow acute apex, truncate base, dentate margin, medium to deep margin incisions, medium green on upper side with no anthocyanin colouration, sparse pubescence on upper side

FLOWER: trumpet shaped
CALYX: weak to medium anthocyanin colouration, medium sized wings with no undulation of margin
COROLLA: medium undulation of margin
UPPER COROLLA LOBE: inner side dark violet (RHS 83A) when newly opened, dark violet (RHS 83A-B) with violet blue (RHS 91A) along margin edge when fully opened, light violet blue (RHS 92B-C) secondary colour at transition to corolla tube
LATERAL COROLLA LOBES: inner side blue violet (RHS N88A) blended with blue violet (more purple than N89A-B) when fully opened, violet blue (RHS 91A) at margin edge
LOWER COROLLA LOBE: inner side blue violet (RHS N88A - N89A) with violet blue (RHS 91A) along margin edge and violet blue (RHS 92B-C) secondary colour at transition to corolla tube, medium sized yellow stripe present
COROLLA TUBE: inner side violet blue (RHS 92B-C) with strongly conspicuous veins, outer side violet blue (RHS 92A)

Origin & Breeding History: 'Tor Bule' originated from a hybrid cross conducted in July 2004 in Andijk, The Netherlands. The female parent was a proprietary seedling with blue flowers and the male parent was a proprietary seedling with blue and white flowers. The resultant seed was sown in a greenhouse in December 2004. In March 2005, a single plant was selected from the progeny based on flower colour and plant habit.

Tests & Trials: Trials for 'Tor Bule' were conducted in a poly-house during the spring of 2009 at BioFlora Inc. in St. Thomas, Ontario. The trial included a total of fifteen plants per variety. All plants were grown from rooted cuttings and transplanted into 11 cm pots on May 7, 2009. Observations and measurements were taken from ten plants or parts of plants on June 9, 2009. All colour determinations were made using the 2001 Royal Horticultural Society (RHS) Colour Chart.

Comparison tables for 'Tor Bule' with reference variety 'Sunrenirabu'

Internode length (cm)

Leaf blade length (mm)

Calyx length (cm)

Colour of inner side of corolla (RHS)

Colour of corolla tube (RHS)

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Torenia: 'Tor Bule' (left) with reference variety 'Sunrenirabu' (right)

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Torenia: 'Tor Bule' (left) with reference variety 'Sunrenirabu' (right)

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Torenia: 'Tor Bule' (left) with reference variety 'Sunrenirabu' (right)