DrisBlueTwentyEight
| Denomination: | 'DrisBlueTwentyEight' |
|---|---|
| Trade name: | Roberto |
| Botanical Name: | Vaccinium corymbosum |
| Applicant/Holder: |
Driscoll's, Inc. 345 Westridge Drive Watsonville, California 95076 United States of America |
| Breeder: |
Bruce D. Mowrey, Driscoll's, Inc., Watsonville, United States of America Jennifer K. Izzo, Driscoll's, Inc, Watsonville, United States of America James Olmstead, Driscoll's, Inc., Watsonville, United States of America Jaime Patzer, Driscoll's, Inc., Watsonville, United States of America Christian Christensen, Driscoll's, Inc., Watsonville, United States of America Stephanie Fong, Driscoll's, Inc., 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: | 2022-10-06 |
| Provisional Protection:: | 2023-05-01 |
| Application Number: | 23-11297 |
Variety Description
Varieties used for comparison: 'DrisBlueTwentyFour' (Delilah) and 'DrisBlueEighteen' (Cassidy)
Summary: The plants of 'DrisBlueTwentyEight' have strong to very strong vigour while those of both reference varieties have medium vigour. The upper half of the one-year-old shoot of 'DrisBlueTwentyEight' has medium to long internodes while that of 'DrisBlueTwentyFour' has short to medium length internodes. The leaf of 'DrisBlueTwentyEight' is ovate to elliptic shaped whereas the leaf of 'DrisBlueEighteen' is lanceolate shaped. The anthocyanin colouration of the flower bud of 'DrisBlueTwentyEight' is of very strong intensity while it is of medium intensity for that of both reference varieties. The corolla shape of the flower of 'DrisBlueTwentyEight' is ovoid while it is globose for that of 'DrisBlueTwentyFour' and ellipsoid for that of 'DrisBlueEighteen'. The receptacle of the flower of 'DrisBlueTwentyEight' is blue whereas it is green for the reference varieties. Without the bloom, the unripe fruit of 'DrisBlueTwentyEight' is light green while it is medium to dark green for 'DrisBlueEighteen'. In longitudinal section, the fruit shape of 'DrisBlueTwentyEight' is oblate while it is circular for both reference varieties. The attitude of the sepals of 'DrisBlueTwentyEight' is incurved while that of the reference varieties is straight. The calyx basin of the fruit of 'DrisBlueTwentyEight' is smaller in diameter than that of 'DrisBlueEighteen'.
Description:
PLANT: strong to very strong vigour, semi-upright to upright growth habit, fruiting on one-year-old shoots only, first vegetative bud burst begins early season
ONE-YEAR-OLD SHOOT: green, medium to long internode length on upper half
LEAF: medium length to width ratio, ovate to elliptic shape, light green colour on upper side, absent to weak glaucosity on upper side, entire margin
FLOWERING: begins mid to late season on one-year-old shoots
RECEPTACLE: blue
FLOWER BUD: very strong intensity of anthocyanin colouration
COROLLA: ovoid shape
COROLLA TUBE: medium to large, white, absent or very weak intensity of anthocyanin colouration on outer side, absent or weak conspicuousness of ridges
INFRUCTESCENCE: sparse
UNRIPE FRUIT: light green colour (with bloom), fruit ripening begins mid-season on one-year-old shoots
FRUIT: large, oblate in longitudinal section, medium depth calyx basin, firm, high sweetness, low to medium acidity
FRUIT SKIN: medium bloom intensity, dark blue skin (after removal of bloom)
SEPALS: incurved
Origin & Breeding History: 'DrisBlueTwentyEight' originated from a cross conducted between the female parent variety 'DrisBlueTwentyFour' and the proprietary male parent variety '52E 3' in February 2011 in Santa Cruz County, California, USA. 'DrisBlueTwentyEight' was selected from the resulting progeny in September 2013 based on fruit size, sweetness, flavour and intensity of bloom. Subsequent asexual propagation by softwood cuttings and tissue culture took place in Santa Cruz County, California, USA in September 2013. Further testing in Linn County, Oregon was conducted from 2019 to 2021.
Tests & Trials: The comparative trial for 'DrisBlueTwentyEight' was conducted by Expert Agriculture Team Ltd., in Chilliwack, British Columbia, Canada during the 2024 growing season. The plants were in rows, which were covered with black mulch and plastic, and irrigated with single strand trickle irrigation. The plots were arranged in an RBC design with 4 replicates. Each replicate consisted of 3 plants for a total of 12 plants per variety. Plants were spaced approximately 90 centimetres apart within rows with 3 metres between rows. Measurements were taken from 10 plants, or parts of plants, of each variety. Mean differences were significant at the 5% confidence probability level based on a paired Student's t-test.
Comparison table for 'DrisBlueTwentyEight' with reference varieties 'DrisBlueTwentyFour' and 'DrisBlueEighteen'
Calyx basin diameter of fruit (cm)
| 'DrisBlueTwentyEight' | 'DrisBlueTwentyFour' | 'DrisBlueEighteen' | |
|---|---|---|---|
| mean | 0.66 | 0.64 | 0.82 |
| std. deviation | 0.07 | 0.07 | 0.15 |
Click on image for larger view
Blueberry: 'DrisBlueTwentyEight' (centre) with reference varieties 'DrisBlueTwentyFour' (left) and 'DrisBlueEighteen' (right)
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Blueberry: 'DrisBlueTwentyEight' (centre) with reference varieties 'DrisBlueTwentyFour' (left) and 'DrisBlueEighteen' (right)
Click on image for larger view
Blueberry: 'DrisBlueTwentyEight' (centre) with reference varieties 'DrisBlueTwentyFour' (left) and 'DrisBlueEighteen' (right)
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