Sweet Caroline Red
| Denomination: | 'Sweet Caroline Red' |
|---|---|
| Botanical Name: | Ipomoea batatas |
| Applicant/Holder: |
North Carolina State University Office of Technology Transfer 1021 Main Campus Drive Raleigh, North Carolina 27606 United States of America |
| Breeder: |
Kultaran Chohan, North Carolina State University, Raleigh, 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: | 2004-07-08 |
| Application Number: | 04-4296 |
| Grant of Rights Date: | 2007-10-12 |
| Certificate Number: | 2976 |
| Date rights surrendered: | 2019-10-12 |
Variety Description
Variety used for comparison: 'Blackie'
Summary: The colour of the upper side of the leaves for 'Sweet Caroline Red' is dark purple red to dark brown while it is dark brown to black for 'Blackie'.
Description:
'Sweet Caroline Red' is an annual, ornamental sweet potato variety which is propagated vegetatively. The plants have a mounding / spreading growth habit and have medium density branching. The stems are purple, medium in thickness and smooth. They have very strong anthocyanin colouration, absent to very weak glaucosity and absent to very weak pubescence.
The leaves of 'Sweet Caroline Red' are simple type and arranged alternately along the stem. The leaves are palmately lobed with an acute shaped apex and reniform shaped base. The margin of the leaf blade is entire. The leaf blade is dark purple red to dark brown on the upper side and dark brown on the lower side. There is no variegation. Pubescence of the upper and lower sides of the leaf blade is absent to very sparse. The upper side of the leaf blade has absent to very weak glaucosity and the petioles have very strong anthocyanin colouration.
Origin & Breeding History: 'Sweet Caroline Red' originated from a conventional cross conducted during the winter of 2001-2002 at the Horticultural Greenhouses of North Carolina State University in Raleigh, North Carolina, U.S.A. The female parent 'Sweet Caroline Bronze' resulted from a cross between 'Sulfur' and ('Sulfur' x 'Blackie') and the male parent designated 'NC138-1ORN' resulted from a cross between 'Sulfur' x 'Blackie'. The seeds were planted in the spring of 2002 and 'Sweet Caroline Red' was selected in June of 2002.
Tests & Trials: The test and trial for 'Sweet Caroline Red' was conducted in a polyhouse during the summer of 2005 at Variety Rights Management in Oxford Station, Ontario. The trial included 15 plants of each variety. The plants were grown from rooted cuttings planted in 10 cm square pots spaced 30 cm apart. All colour characteristics were determined using the 2001 Royal Horticultural Society (RHS) colour chart and measured characteristics were based on ten plant measurements.
Comparison tables for 'Sweet Caroline Red' with reference variety 'Blackie'
Plant width (cm)
| 'Sweet Caroline Red' | 'Blackie' | |
|---|---|---|
| mean | 69.7 | 75.5 |
| std. deviation | 5.76 | 4.33 |
Colour of leaf blade (RHS)
| 'Sweet Caroline Red' | 'Blackie' | |
|---|---|---|
| upper side | 187B/N186C | N187A/200A |
| lower side | N186C | N186C |
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