Denomination: 'DrisBlueTen'
Trade name: Sweet Jane
Botanical Name: Vaccinium corymbosum
Applicant/Holder: Driscoll's, Inc.
A California Corporation
P.O. Box 50045, 345 Westridge Drive
Watsonville, California
United States of America
Breeder: Brian K. Caster, Driscoll's, Inc., Watsonville, United States of America
Arlen Draper, Drapen, Arlen, Payson, United States of America
Jennifer K. Izzo, Driscoll's, Inc, Watsonville, United States of America
Agent in Canada: Expert Agriculture Team Ltd.
46420 Prairie Central Road
Chilliwack, British Columbia
V2P 6H3
Tel: 604-795-2537
Application Date: 2014-06-20
Application Number: 14-8377
Grant of Rights Date: 2017-05-02
Certificate Number: 5473
Grant of Rights Termination Date: 2037-05-02

Variety Description

Varieties used for comparison: 'Bluecrop' and 'Elliott'

Summary: The plants of 'DrisBlueTen' are medium to strong in vigour with a semi-upright growth habit whereas the plants of 'Bluecrop' are weak to medium in vigour with an upright growth habit. The leaf of 'DrisBlueTen' is larger than the leaf of 'Bluecrop'. The inflorescence of 'DrisBlueTen' is longer than the inflorescence of both reference varieties. 'DrisBlueTen' has fruit that is large whereas 'Bluecrop' has fruit that is medium in size. The attitude of the sepals are semi-erect for 'DrisBlueTen' whereas the sepals on both reference varieties is erect. The fruit of 'DrisBlueTen' is very firm with medium sweetness and acidity whereas the fruit of 'Elliott' is firm with very low sweetness and high to very high acidity. Fruit ripening on one-year-old shoots begins early to mid-season for 'DrisBlueTen' whereas it begins late season for 'Elliott'.


PLANT: medium to strong vigour, semi-upright growth habit, flowers and fruits on one-year-old shoots only, flowering begins mid to late season, fruit ripening begins early to mid-season
ONE-YEAR-OLD SHOOT: green, medium to long internode length

LEAF: medium length to width ratio, elliptic shape, dark green on upper side, entire margin

COROLLA: urceolate shape
CORROLA TUBE: medium to large with ridges, absent or very weak intensity of anthocyanin colouration

FRUIT: sparse to medium density fruit cluster, medium intensity of green on unripe fruit, large, oblate shape in longitudinal section, sepals incurving with semi-erect attitude, shallow calyx basin, medium bloom intensity, dark blue skin, very firm, medium sweetness and acidity

Origin & Breeding History: 'DrisBlueTen' arose from a cross between proprietary varieties 'Nui' (female parent) and 'MS122' (male parent) made in 2002 in Santa Cruz County, California. From the resulting progeny, 'DrisBlueTen' was selected in 2003 for its early harvest season, strong vigour, and large firm fruit.

Tests & Trials: The comparative trial for 'DrisBlueTen' was conducted by Expert Agriculture Team Ltd., in Chilliwack, British Columbia during the 2015 growing season. The plots were planted in the spring of 2014 in a randomized complete block design. Each variety consisted of 3 replicates with 3 plants per replicate for a total of 9 plants of each variety. Plants were spaced approximately 60 centimetres apart within rows and 3 metres between rows. Measurements were taken from 9 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 tables for 'DrisBlueTen' with reference varieties 'Bluecrop' and 'Elliott'

Leaf length (cm)

  'DrisBlueTen' 'Bluecrop' 'Elliott'
mean 5.65 4.95 6.53
std. deviation 0.687 0.481 0.719

Leaf width (cm)

  'DrisBlueTen' 'Bluecrop' 'Elliott'
mean 3.43 2.53 3.44
std. deviation 0.519 0.264 0.455

Inflorescence length (cm)

  'DrisBlueTen' 'Bluecrop' 'Elliott'
mean 2.30 1.65 1.81
std. deviation 0.256 0.257 0.120

Click on image for larger view
Blueberry: 'DrisBlueTen' (left) with reference varieties 'Bluecrop' (centre) and 'Elliott' (right)

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