Yogreen Valley

Chrysanthemum

Variety Description

Variety used for comparison: 'Yobrunswick' (Brunswick)

Summary: The plants of 'Yogreen Valley' are shorter and narrower than the plants of 'Yobrunswick'. The flower head of 'Yogreen Valley' is smaller in diameter than the flower head of 'Yobrunswick'. There are four to five rows of ray florets for 'Yogreen Valley' while there are one to two rows for 'Yobrunswick'. The ray florets of 'Yogreen Valley' are quilled while the ray florets of 'Yobrunswick' are mostly spatulate. The ray floret of 'Yogreen Valley' is shorter than the ray floret of 'Yobrunswick'. The inner and outer side of the ray floret is yellow green for 'Yogreen Valley' while it is white for 'Yobrunswick'.

Description:

PLANT: bushy type, upright to semi-upright growth habit, green stem

PETIOLE: moderately upwards to horizontal attitude, short length relative to leaf length
LEAF: terminal lobe medium in length relative to leaf length, lowest lateral sinus medium in depth with diverging margins, base acute to obtuse, upper side medium green with absent or weak glossiness, medium number of deep margin indentations

FLOWER: medium to many flower heads per plant, outer side of bud yellow green (RHS 150B), semi-double daisy head type
RAY FLORETS: four to five rows, predominantly quilled type, moderately ascending attitude of basal part, very long corolla tube, flattened to triangular profile of tube, weak incurving of longitudinal axis at distal quarter, tip emarginate, dentate and mamillate
RAY FLORET: inner side yellow green (RHS 150D), outer side yellow green (RHS 154D)
DISC: small diameter relative to head diameter, slightly domed in cross section, green to yellowish before anther dehiscence with no dark spot at centre, yellow orange at anther dehiscence.

Origin & Breeding History: The variety 'Yogreen Valley' originated from a controlled pollination conducted in January 2004 in Fareham, Hampshire, United Kingdom. The female parent was a proprietary seedling designated P888G 3 and the male parent was a proprietary seedling designated P806G 1. The new variety was selected in September 2004 in Fareham, United Kingdom. The selection criteria included flower colour, flowering response time, flower form, foliage size and production characteristics. Asexual reproduction by vegetative cuttings was first conducted in Fareham, United Kingdom in December 2004.

Tests & Trials: Trials for 'Yogreen Valley' were conducted in a greenhouse trial during the Fall of 2011 in Niagara-on-the-Lake, Ontario. On August 8, 2011, fifty unrooted cuttings were directly stuck into 15 cm pots, with 5 cuttings per pot. The trial included a total of 10 pots of each variety spaced 30 cm apart. Plants were pinched once prior to short day treatment. Observations and measurements were taken from 10 plants of each variety on November 8, 2011. All colour determinations were made using the 2007 Royal Horticultural Society (RHS) Colour Chart.

Comparison tables for 'Yogreen Valley' with reference variety 'Yobrunswick'

Plant height (cm)

Plant width (cm)

Flower head diameter (cm)

Ray floret length (cm)

Colour of ray floret (RHS)

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Chrysanthemum: 'Yogreen Valley' (left) with reference variety 'Yobrunswick' (right)

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Chrysanthemum: 'Yogreen Valley' (left) with reference variety 'Yobrunswick' (right)