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DrisBlackTwentyFour

Blackberry

Denomination: 'DrisBlackTwentyFour'
Trade name: Valeria
Botanical Name: Rubus
Applicant/Holder: Driscoll's, Inc.
345 Westridge Drive
Watsonville, California
95076
United States of America
Breeder: Gavin R. Sills, Driscoll's, Inc., Watsonville, United States of America
Mark F. Crusha, Driscoll's, Inc., Watsonville, United States of America
Yunwen Wang, Watsonville, United States of America
John Fangary, Watsonville, United States of America
Agent in Canada: Lavery, De Billy, S.E.N.C.R.L. - LLP
1, Place Ville Marie, Bureau 4000
Montreal, Quebec
H3B 4M4
Canada
Tel: 514 397-5138
Application Date: 2020-01-08
Provisional Protection:: 2020-10-19
Application Number: 20-10363
Grant of Rights Date: 2022-08-09
Certificate Number: 6624
Exemption from compulsory licensing: Yes
Expiry date for exemption from compulsory licensing: 2024-08-09
Grant of Rights Termination Date: 2042-08-09

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: 'DrisBlackThirteen' (Elvira) and 'DrisBlackTwelve' (Chance)

Summary: The dormant cane of 'DrisBlackTwentyFour' has an absent or very weak to weak intensity of anthocyanin colouration while that of 'DrisBlackThirteen' has a medium intensity of anthocyanin colouration. The dormant cane of 'DrisBlackTwentyFour' has a medium number of large spines while those of the reference varieties have no spines. The leaf of 'DrisBlackTwentyFour' has predominantly five leaflets while those of the reference varieties have predominantly three leaflets. The leaf of 'DrisBlackTwentyFour' is odd-pinnate type while that of 'DrisBlackTwelve' is palmate type. The flower of 'DrisBlackTwentyFour' is white while the flower of 'DrisBlackThirteen' is pinkish. The fruit of 'DrisBlackTwentyFour' has a small length to width ratio while the length to width ratio is large for the fruit of the reference varieties. The time of flowering on the previous year`s canes begins very early for 'DrisBlackTwentyFour' while it begins late in the season for 'DrisBlackTwelve'. The time of fruit ripening on the previous year`s canes begins early in the season for 'DrisBlackTwentyFour' while it begins late in the season for 'DrisBlackTwelve'.

Description:

PLANT: upright growth habit, many new canes, suckering from roots, leaf bud burst occurs early in season, begins flowering on previous year`s cane very early in the season and on current year`s cane early in the season, begins fruit ripening on previous and current year`s cane early in the season

YOUNG SHOOT (during rapid growth): medium intensity of anthocyanin colouration, dark green, many glandular hairs
DORMANT CANE: absent or very weak to weak intensity of anthocyanin colouration, many branches distributed over whole length, angular in cross-section, medium number of large spines with outwards attitude
CURRENT YEAR'S CANE: fruiting present

PETIOLE: small stipules
LEAF: predominantly five leaflets, odd-pinnate type, medium to dark green on upper side, weak glossiness on upper side
TERMINAL LEAFLET: lobing absent, u-shaped in cross-section, weak undulation of margin, strong to very strong blistering between veins
LEAFLET: serrate incisions of margin of medium depth

FLOWER: white, very dense glandular hairs on pedicel

FRUITING LATERAL: few prickles
FRUIT: small length to width ratio, few to a medium number of medium to large drupelets, circular and oblong in longitudinal section, black

Origin & Breeding History: 'DrisBlackTwentyFour' originated from a cross, between the proprietary line designated, 'BQ948.1', as the female parent, and 'DrisBlackThirteen', as the male parent, conducted in April 2011 in Santa Cruz County, California, USA. 'DrisBlackTwentyFour' was selected in 2013 on the basis of plant health, plant vigor, fruit size, fruit firmness and flavour. 'DrisBlackTwentyFour' was further propagated by root cuttings and underwent additional testing in Santa Cruz County, California from 2015 to 2019.

Tests & Trials: The comparative trial for 'DrisBlackTwentyFour' was conducted in Chilliwack, British Columbia during the 2021 growing season with dormant cane traits being assessed late in the fall of 2020. There were four replicates per variety, arranged in a randomized complete block design. Each replicate consisted of 3 plants in a 2.7 metre row for a total of 12 plants per variety. Plants were spaced approximately 0.91 metres apart within the row with 3 metre inter-row spacing. Observations were taken from 10 plants or parts of 10 plants of each variety.

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DrisBlackTwentyFour
Blackberry: 'DrisBlackTwentyFour' (left) with reference varieties 'DrisBlackThirteen' (centre) and 'DrisBlackTwelve' (right)

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DrisBlackTwentyFour
Blackberry: 'DrisBlackTwentyFour' (left) with reference varieties 'DrisBlackThirteen' (centre) and 'DrisBlackTwelve' (right)

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DrisBlackTwentyFour
Blackberry: 'DrisBlackTwentyFour' (left) with reference varieties 'DrisBlackThirteen' (centre) and 'DrisBlackTwelve' (right)

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