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NCORNSP-029SCBC

Sweet Potato

Denomination: 'NCORNSP-029SCBC'
Trade name: Sweet Caroline Upside Black Coffee
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: G. Craig Yencho, North Carolina State University, Raleigh, United States of America
Kenneth Pecota, North Carolina State University, Raleigh, United States of America
Christopher Heim, Morrisville, 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: 2023-03-27
Provisional Protection:: 2023-03-27
Application Number: 23-11256

Variety Description

Varieties used for comparison: 'Balsotowac' (Solar Tower Black) and 'NCORNSP-030ILPL' (Sweet Caroline Illusion Penny Lace)

Summary: The plants of 'NCORNSP-029SCBC' are shorter than those of 'Balsotowac' and taller than those of 'NCORNSP-030ILPL'. The tip of the stem of 'NCORNSP-029SCBC' has absent or sparse pubescence whereas that of 'NCORNSP-030ILPL' has dense pubescence. The leaf blade of 'NCORNSP-029SCBC' is wider than that of 'Balsotowac' and narrower than that of 'NCORNSP-030ILPL'. The leaf blade margin of 'NCORNSP-029SCBC' is lobed whereas that of 'Balsotowac' is entire.

Description:

PLANT: upright and climbing growth habit, many branches

STEM: purple, medium thickness, medium diameter of internode, strong intensity of anthocyanin colouration at internode, medium intensity of anthocyanin colouration at tip, strong intensity of anthocyanin colouration of node, absent or sparse pubescence on tip

LEAF BLADE (YOUNG): upper side medium green (closest to RHS 144A)
LEAF BLADE: very deeply lobed margin
LEAF BLADE (UPPER SIDE): black (closest to RHS N187A), strong intensity of anthocyanin colouration, very large extent of very strong intensity of anthocyanin colouration along abaxial veins
LEAF BLADE (LOWER SIDE): black (closest to RHS N187A)
PETIOLE: strong intensity of anthocyanin colouration

Origin & Breeding History: 'NCORNSP-029SCBC' originated from a conventional cross between the two proprietary breeding lines 'NC29ORN' as the female parent and 'NC6879-008ORN' as the male parent. The cross was conducted at North Carolina State University, Horticultural Field Laboratory Greenhouses, in Raleigh, North Carolina, USA between October 2016 and April 2017. The new variety 'NCORNSP-029SCBC' was selected from the progeny on September 25, 2018, at the Horticultural Crops Research Station in Clinton, North Carolina, USA based on growth habit, plant vigour, branching characteristics, overall plant architecture, leaf colour and leaf shape.

Tests & Trials: The comparative trial for 'NCORNSP-029SCBC' was conducted in a polyhouse during the spring of 2023 at Bioflora Inc. in St. Thomas, Ontario. The trial included a total of 15 plants each of the candidate and reference varieties. All plants were grown from rooted cuttings transplanted into 15 cm pots on April 17, 2023. Observations and measurements were taken from 10 plants, or 10 parts of plants, of each variety on June 6, 2023. The mean differences were significant at the 5% probability level based on a paired Student's t-test. All colour determinations were made using the 2015 Royal Horticultural Society (RHS) Colour Chart.


Comparison tables for 'NCORNSP-029SCBC' with reference varieties 'Balsotowac' and 'NCORNSP-030ILPL'

Plant height (cm)

  'NCORNSP-029SCBC' 'Balsotowac' 'NCORNSP-030ILPL'
mean 20.1 45.4 14.5
std. deviation 4.23 7.10 0.70

Leaf blade width (cm)

  'NCORNSP-029SCBC' 'Balsotowac' 'NCORNSP-030ILPL'
mean 6.6 5.5 9.8
std. deviation 1.10 0.47 0.91

Click on image for larger view
NCORNSP-029SCBC
Sweet Potato: 'NCORNSP-029SCBC' (left) with reference varieties 'Balsotowac' (center) and 'NCORNSP-030ILPL' (right)

Click on image for larger view
NCORNSP-029SCBC
Sweet Potato: 'NCORNSP-029SCBC' (left) with reference varieties 'Balsotowac' (center) and 'NCORNSP-030ILPL' (right)

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