Calypso
| Denomination: | 'Calypso' |
|---|---|
| Botanical Name: | Vaccinium corymbosum |
| Applicant/Holder: |
Board of Trustees of Michigan State University 450 Administration Building East Lansing, Michigan 48824 United States of America |
| Breeder: |
James F. Hancock, Scarborough, United States of America |
| Agent in Canada: |
BioFlora Inc. 38723 Fingal Line R.R. #1 St. Thomas, Ontario N5P 3S5 Canada Tel: 519-317-7511 |
| Application Date: | 2013-11-01 |
| Application Number: | 14-8466 |
| Grant of Rights Date: | 2020-07-10 |
| Certificate Number: | 6232 |
| Grant of Rights Termination Date: | 2040-07-10 |
Variety Description
Varieties used for comparison: 'Legacy' and 'Jersey'
Summary: The one-year-old shoot of 'Calypso' is reddish brown whereas the one-year-old shoot of 'Legacy' is greenish red and that of 'Jersey' is reddish yellow. The upper side of the leaf blade is dark green for 'Calypso' whereas it is medium green for 'Legacy' and light to medium green for 'Jersey'. 'Calypso' has an urceolate shaped corolla whereas 'Legacy' has a cylindrical shaped corolla. 'Calypso' has fruit with a shallow calyx basin whereas 'Jersey' has fruit with a deep calyx basin. The acidity of the fruit of 'Calypso' is low whereas it is high for 'Legacy' and of medium acidity for 'Jersey'.
Description:
PLANT: weak to medium vigour, semi-upright growth habit, fruits and flowers on one-year old shoots only, flowering begins mid-season, fruit ripening begins mid-season
ONE-YEAR-OLD SHOOT: reddish brown, short to medium internode length
LEAF: medium to large length to width ratio, ovate shape, dark green on upper side, entire margin
FLOWER BUD: medium to strong intensity of anthocyanin colouration, early bud burst
COROLLA: urceolate shape
COROLLA TUBE: medium sized with ridges, weak intensity of anthocyanin colouration
FRUIT: dense cluster, light to medium green unripe fruit, large, oblate in longitudinal section, straight semi-erect sepals, shallow calyx basin, medium to strong intensity of bloom, medium blue skin, medium firmness, medium degree of sweetness, low acidity
Origin & Breeding History: 'Calypso' resulted from a controlled cross between 'Draper' and 'Elliot' made in 2002 at the Southwest Michigan Research and Extension Center in Benton Harbor, Michigan. The resulting seed was planted in a greenhouse and 'Calypso' was selected in 2006 form 103 sibling plants. 'Calypso' was asexually propagated by softwood cuttings for further testing. Section criteria was for plant vigour, fruit size, fruit firmness and size of picking scar.
Tests & Trials: The comparative trial for 'Calypso' was conducted by Expert Agriculture Team Ltd., in Chilliwack, British Columbia during the 2017 and 2018 growing seasons. Each variety consisted of 3 replicates with 3 plants per replicate for a total of 9 plants of each variety. Plants were spaced approximately 76 cm apart within rows and 3 metres between rows. Measurements were taken from 9 plants, or 9 parts of plants, of each variety.
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Blueberry: 'Calypso' (left) with reference varieties 'Legacy' (centre) and 'Jersey' (right)
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Blueberry: 'Calypso' (left) with reference varieties 'Legacy' (centre) and 'Jersey' (right)
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Blueberry: 'Calypso' (left) with reference varieties 'Legacy' (centre) and 'Jersey' (right)
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