Bidori

Bidens

Variety Description

Varieties used for comparison: 'Peters Goldteppich' (Peter's Gold Carpet) and 'Bidtis 1' (Radiant Yellow)

Summary: 'Bidori' differs from the reference varieties mainly in plant and leaf width, stem colour and anthocyanin, leaf blade pubescence and ray floret arrangement. The plants of 'Bidori' are narrower than those of 'Peters Goldteppich'. 'Bidori' has a light green stem while it is light green and purple brown for 'Peters Goldteppich' and purple brown for 'Bidtis 1'. The anthocyanin colouration of the stem is weaker for 'Bidori' than for the reference varieties. The pubescence of the leaf blade on the upper side is weaker for 'Bidori' than for the reference varieties. The pubescence of the leaf blade on the lower side is absent or very weak for 'Bidori' while it is sparse for 'Peters Goldteppich' and strong for 'Bidtis 1' in the veins only. The ray floret arrangement is touching to overlapping for 'Bidori' while it is open for 'Peters Goldteppich' and open to touching for 'Bidtis 1'. 'Bidori' has an average number of 7 ray florets while 'Peters Goldteppich' has an average of 6 ray florets and 'Bidtis 1' has 5-6 ray florets.

Description:

PLANT: annual, semi-upright to spreading growth habit, dense branching

STEM: light green, weak anthocyanin colouration, very weak glaucosity, dense pubescence, medium thickness, edged-striate surface

LEAF: opposite arrangement along stem, bipinnately compound, five to seven leaflets
LEAF BLADE: ovate, acute and cuspidate apex, attenuate base, pinnatisect margin, absent or very sparse pubescence on upper and lower side, medium green on upper side, light to medium green on lower side, no variegation
PETIOLE: present

FLOWERING: almost continuous for a long time
PEDUNCLE: no anthocyanin colouration, medium pubescence
BRACT: dark green, linear in shape, acute apex, weak recurvature of tip, entire margin, absent or very sparse pubescence on upper and lower side
INFLORESCENCE: head type
FLOWER: positioned both in terminal and axillary locations on the flowering stem, erect attitude
RAY FLORET: arrangement within the flower is touching to overlapping, many in number (seven to eight range), elliptic, emarginate-dentate apex, very weak recurvature of tip, entire margin, absent or very weak undulation of margin, absent or very sparse pubescence on upper and lower sides, more intense yellow on upper side, yellow on lower side
FLORET DISC: present

Origin & Breeding History: The Bidens variety 'Bidori' was developed by the breeder D. van Kleinwee, an employee of Syngenta Seeds B.V. in Enkhuizen, The Netherlands. 'Bidori' originated from a controlled cross made in 2001 in Enkhuizen, between the female parent identified as B593-1 and the male parent identified as A320. 'Bidori' was selected from the resultant progeny as a single plant in April 2002 based on criteria for growth habit, branching characteristics, flower colour and size, and continuous flowering. Asexual reproduction by cuttings was first conducted in April 2002 in Enkhuizen, The Netherlands.

Tests & Trials: PBR trials were conducted in a polyhouse during the spring of 2007 in St. Thomas, Ontario. Trials included 15 plants of the candidate and reference variety. Rooted cuttings were transplanted into 15 cm pots on May 10, 2007. Observations and measurements were taken from 10 plants of each variety on August 16-21, 2007. All colour measurements were made using the 2001 Royal Horticultural Society (RHS) Colour Chart.

Comparison tables for 'Bidori' with reference varieties 'Peters Goldteppich' and 'Bidtis 1'

Plant width (cm)

Leaf blade width (cm)

Number of ray florets per flower

Click on image for larger view

Bidens: 'Bidori' (left) with reference varieties 'Peters Goldteppich' (centre) and 'Bidtis-1' (right)