DrisBlackTwentyThree
| Denomination: | 'DrisBlackTwentyThree' |
|---|---|
| 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, Suite 4000 Montreal, Quebec H3B 4M4 Canada Tel: 514 397-5138 |
| Application Date: | 2020-01-08 |
| Provisional Protection:: | 2020-10-19 |
| Application Number: | 20-10364 |
| Grant of Rights Date: | 2022-08-09 |
| Certificate Number: | 6623 |
| Exemption from compulsory licensing: | Yes |
| Expiry date for exemption from compulsory licensing: | 2024-08-09 |
| Grant of Rights Termination Date: | 2042-08-09 |
Variety Description
Varieties used for comparison: 'DrisBlackSix' (Victoria) and 'Carmel'
Summary: The dormant cane of 'DrisBlackTwentyThree' is angular in cross-section with no spines while the dormant cane of 'Carmel' is rounded with very few small spines. The leaf of 'DrisBlackTwentyThree' has bi-serrate incisions of margin while the leaf of 'DrisBlackSix' has serrate incisions of margin. The flower of 'DrisBlackTwentyThree' is white while that of 'DrisBlackSix' is pinkish. The fruit of 'DrisBlackTwentyThree' is smaller than the fruit of 'Carmel' and narrower than the fruit of 'DrisBlackSix'. The time of flowering on the previous year`s canes begins late in the season for 'DrisBlackTwentyThree' while it begins mid-season for 'DrisBlackSix'.
Description:
PLANT: upright to semi-upright growth habit, many new canes, suckering from roots, leaf bud burst occurs early to mid-season, begins flowering and fruit ripening on previous years cane late in the season
YOUNG SHOOT (during rapid growth): medium to strong intensity of anthocyanin colouration, medium green, absent or few glandular hairs
DORMANT CANE: medium to strong intensity of anthocyanin colouration, many branches distributed over whole length, angular in cross-section, no spines
CURRENT YEAR'S CANE: no fruiting
PETIOLE: very small to small stipules
LEAF: predominantly three and five leaflets, odd-pinnate type, medium green on upper side, weak glossiness on upper side
TERMINAL LEAFLET: lobing absent, u-shaped in cross-section, absent or very weak undulation of margin, strong to very strong blistering between veins
LEAFLET: bi-serrate incisions of margin of medium depth
FLOWER: white, absent or very sparse glandular hairs on pedicel
FRUITING LATERAL: absent or very few prickles
FRUIT: small to medium length to width ratio, medium to many small to medium sized drupelets, oblong in longitudinal section, black
Origin & Breeding History: 'DrisBlackTwentyThree' originated from a cross between the proprietary line,'BN864.2', as the female parent, and 'DrisBlackEighteen, as the male parent, conducted in April 2010 in Santa Cruz County, California, USA. 'DrisBlackTwentyThree' was selected in 2012 on the basis of lack of spines, fruit size, fruit firmness and flavour. 'DrisBlackTwentyThree' was further propagated by root cuttings and underwent additional testing in Santa Cruz County, California, from 2014 to 2019.
Tests & Trials: The comparative trial for 'DrisBlackTwentyThree' 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. Measurements were taken from 10 plants or parts of 10 plants of each variety. Mean differences were significant at the 5% confidence probability level based on a paired Student's t-test.
Comparison tables for 'DrisBlackTwentyThree' with reference varieties 'DrisBlackSix' and 'Carmel'
Fruit length (cm)
| 'DrisBlackTwentyThree' | 'DrisBlackSix' | 'Carmel' | |
|---|---|---|---|
| mean | 2.69 | 2.75 | 3.29 |
| std. deviation | 0.14 | 0.30 | 0.28 |
Fruit width (cm)
| 'DrisBlackTwentyThree' | 'DrisBlackSix' | 'Carmel' | |
|---|---|---|---|
| mean | 2.08 | 2.34 | 2.42 |
| std. deviation | 0.12 | 0.13 | 0.19 |
Click on image for larger view
Blackberry: 'DrisBlackTwentyThree' (left) with reference varieties 'DrisBlackSix' (centre) and 'Carmel' (right)
Click on image for larger view
Blackberry: 'DrisBlackTwentyThree' (left) with reference varieties 'DrisBlackSix' (centre) and 'Carmel' (right)
Click on image for larger view
Blackberry: 'DrisBlackTwentyThree' (left) with reference varieties 'DrisBlackSix' (centre) and 'Carmel' (right)
- Date modified: