DrisRaspFifteen

Raspberry

Variety Description

Varieties used for comparison: 'DrisRaspSix' (Alicia) and Maravilla

Summary: The plants of 'DrisRaspFifteen' have a semi upright growth habit whereas both reference varieties have an upright growth habit. 'DrisRaspFifteen' has a medium number of current season's canes whereas both reference varieties have many current season's canes. When fully grown, the current season's cane on 'DrisRaspFifteen' has a very strong bloom whereas 'DrisRaspSix' has a weak to medium degree of bloom and 'Maravilla' has an absent or very weak bloom. The dormant cane on 'DrisRaspFifteen' is shorter than the dormant cane of both reference varieties. The current season cane on 'DrisRaspFifteen' is shorter than the current season's cane of both reference varieties. In autumn, fruit ripening on the current season's cane of 'DrisRaspFifteen' begins mid to late season whereas for 'DrisRaspSix' it begins very late.

Description:

PLANT: semi upright growth habit, medium number of current season's canes, bears fruit on previous season's cane in summer and on current season's cane in autumn, mid to late season vegetative bud burst

VERY YOUNG SHOOT: weak intensity of anthocyanin colouration of apex during rapid growth, mid to late season emergence
CURRENT SEASON`S CANE: very strong bloom, absent or very weak intensity of anthocyanin colouration, medium internode length, short to medium length vegetative bud, spines present
DORMANT CANE: brownish grey
SPINES ON CURRENT SEASON'S CANE: sparse density, very small to small base, medium length, purplish brown
FRUITING LATERAL ON PREVIOUS SEASON'S CANE: semi erect

PEDICEL: absent or very few spines
LEAF: light to medium green colour on upper side, predominantly five leaflets, medium degree of rugosity, relative position of lateral leaflets is free and touching
LEAFLET: convex in cross-section

FLOWERING: begins mid to late season on previous year's and current year's canes
PEDUNCLE: no anthocyanin colouration
FLOWER: medium sized

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

Origin & Breeding History: 'DrisRaspFifteen' originated from a controlled cross between proprietary parent 'RD335.8' and proprietary parent 'Z367.1' conducted at Santa Cruz County, California, USA in April 2011. The new variety 'DrisRaspFifteen' was selected in February 2013 in Ventura County, California based on primocane and floricane yield, fruit size, fruit flavor and shelf life. Asexual reproduction by root cuttings was initiated in Santa Cruz County, California USA in May 2013.

Tests & Trials: The comparative trial for 'DrisRaspFifteen' was conducted in Chilliwack, British Columbia during the 2023 growing season. Plants were transplanted in April 2021 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. A total of 10 measurements were taken from each variety. Mean differences were significant at the 5% confidence probability level based on a paired Student`s t-test.

Comparison tables for 'DrisRaspFifteen' with reference varieties 'DrisRaspSix' and Maravilla

Dormant cane length (cm)

Current season's cane length (cm)

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Raspberry: 'DrisRaspFifteen' (centre) with reference varieties 'DrisRaspSix' (left) and 'Maravilla' (right)

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Raspberry: 'DrisRaspFifteen' (centre) with reference varieties 'DrisRaspSix' (left) and 'Maravilla' (right)