Yodurango

Chrysanthemum

Variety Description

Variety used for comparison: 'Amber Pomona'

Summary: 'Yodurango' has a converging to overlapping lateral leaf lobe sinus while 'Amber Pomona' has a diverging to parallel lateral lobe sinus. The ray floret of 'Yodurango' is strongly convex in cross section at the widest point while the ray floret of 'Amber Pomona' is flat. The longitudinal axis of the ray floret is weakly twisted for 'Yodurango' while it is straight for 'Amber Pomona'. The inner side of the ray floret is a slightly darker orange brown colour for 'Yodurango' than for 'Amber Pomona'.

Description:

PLANT: disbud flowering type, pot plant, 8 week response group, semi upright bushy growth habit, green stem

LEAF: terminal lobe long in length relative to leaf length, lowest lateral lobe sinus medium in depth with converging to overlapping margins, base truncate, upper side dark green

FLOWER HEAD: double, dense ray florets
RAY FLORETS: ligulate with an incurved secondary type, absent to very short corolla tube, horizontal attitude at basal part, strongly convex in cross section at widest point, weakly twisted along longitudinal axis, emarginate and dentate tip, inner side orange brown (RHS N172A), light yellow brown (RHS 163B) secondary colour distributed throughout in diffuse stripes, yellow tertiary colour at tip and base, outer side light yellow (RHS 10C) with streaks of orange pink (RHS 179D).

Origin & Breeding History: 'Yodurango' originated from a controlled cross between the female parent 'YB-A4033' and the male parent, 'YB-A4512'. The cross was made by the breeder, Mrs. Wendy Bergman, in March 2003 in Salinas, California, USA. A single seedling from the resultant progeny was selected in February 2004, in Fort Myers, Florida. 'Yodurango' was selected based on its uniform compact growth habit, outstanding plant strength, desirable inflorescence form, floret colour, fast response time, suitability for production and excellent post-production longevity. Asexual reproduction of the variety by vegetative tip cuttings was first conducted in Fort Myers, Florida, USA in May 2004.

Tests & Trials: Trials for 'Yodurango' were conducted in Leamington, Ontario, in the fall of 2009. Flowering trials were performed under greenhouse conditions similar to those used in commercial chrysanthemum production. Forty unrooted cuttings of both the candidate and reference variety were directly stuck into 15 cm pots, with 4 cuttings per pot, 10 pots per variety, planted on August 24, 2009. Plants were spaced 30 cm apart and pinched once prior to short day treatment. All plants had the center bud removed. Observations and measurements were taken from 10 plants of each variety on November 6, 2009. All colour determinations were made using the 2007 Royal Horticultural Society (RHS) Colour Chart.

Comparison table for 'Yodurango' with reference variety 'Amber Pomona'

Colour of ray floret (RHS)

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Chrysanthemum: 'Yodurango' (left) with reference variety 'Amber Pomona' (right)

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Chrysanthemum: 'Yodurango' (left) with reference variety 'Amber Pomona' (right)