DrisRaspTwentyThree

Raspberry

Note: The applicant has requested an exemption from compulsory licensing to allow time to multiply and distribute propagating material of the variety. If the exemption is granted, it may be allowed for two years from the date rights are granted for the variety.

Variety Description

Varieties used for comparison: 'Meeker' and 'Tulameen'

Summary: The plants of ‘DrisRaspTwentyThree' only bear fruit on the previous year's cane in summer whereas the plants of both reference varieties only bear fruit on the current year's cane in autumn. On the current season's cane, the intensity of anthocyanin colouration is medium for ‘DrisRaspTwentyThree' whereas it is weak for ‘Tulameen' and absent or very weak to weak for ‘Meeker'. On the current season's cane, the length of the internode is short to medium for ‘DrisRaspTwentyThree' whereas it is long for ‘Tulameen' and medium to long for ‘Meeker'. The adherence of the plug to the fruit for ‘DrisRaspTwentyThree' is medium whereas it is weak for ‘Tulameen'.

Description:

PLANT: semi-upright growth habit, few to medium number of current season's canes, bears fruit on previous season's cane in summer, early vegetative bud burst

VERY YOUNG SHOOT: weak intensity of anthocyanin colouration of apex during rapid growth

CURRENT SEASON`S CANE: medium intensity of anthocyanin colouration, short to medium internode, medium length of vegetative bud, no spines

DORMANT CANE: brown
FRUITING LATERAL ON PREVIOUS SEASON'S CANE: erect

LEAF: medium green upper side, predominantly five leaflets, medium to strong rugosity, relative position of lateral leaflets is free
LEAFLET: convex in cross-section

FLOWERING: begins mid to late season on previous season's cane
PEDICEL: absent or very few spines
PEDUNCLE: weak intensity of anthocyanin colouration
FLOWER: medium sized

FRUIT RIPENING: begins mid to late season on previous season's cane
FRUIT: medium length and width, small to medium length to width ratio, medium conical shape in lateral view, medium red , medium glossiness, medium firmness, medium adherence to plug
DRUPE: medium sized
FRUITING PERIOD: medium length on previous season's cane

Origin & Breeding History: ‘DrisRaspTwentyThree' originated from a controlled cross conducted between the proprietary line ‘W678.2' (female parent) and ‘Meeker' (male parent) in Santa Cruz County, California, USA in April 2007. A single seedling of ‘DrisRaspTwentyThree' was selected in July 2010 based on machine harvestability, yield, flavour, and fruit integrity during individual quick freeze processing. ‘DrisRaspTwentyThree' was further propagated by root cuttings from 2010 to 2020 in Whatcom County, Washington, USA.

Tests & Trials: The comparative trial for ‘DrisRaspTwentyThree' was conducted in Chilliwack, British Columbia during the 2024 growing season. Plants were transplanted in April 2022 into raised beds, covered with plastic mulch and irrigated with drip lines. The plots were arranged in a RCB design with four replicates. Each replicate consisted of 3 plants for a total of 12 plants of each variety. Plants were spaced approximately 90 centimetres apart within rows and 3 metres between rows. Observations and measurements were taken from 10 plants of each variety in, 2024.

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Raspberry: 'DrisRaspTwentyThree' (centre) with reference varieties 'Tulameen' (left) and 'Meeker' (right)

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Raspberry: 'DrisRaspTwentyThree' (centre) with reference varieties 'Tulameen' (left) and 'Meeker' (right)