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Denomination: 'Pearl'
Botanical Name: Raphanus sativus
Applicant/Holder: Enza Zaden Beheer B.V.
Haling 1E
1602 DB Enkhuizen
Breeder: Andrea Schieder, Enza Zaden Beheer B.V., Enkhuizen, Netherlands
Agent in Canada: Smart & Biggar IP Agency Co.
P.O. Box 2999, Station D
55 Metcalfe Street, Suite 900
Ottawa, Ontario
K1P 5Y6
Tel: 613-232-2486 ex.1279
Application Date: 2011-06-23
Application Number: 12-7619
Grant of Rights Date: 2014-05-01
Certificate Number: 4758
Grant of Rights Termination Date: 2032-05-01

Variety Description

Varieties used for comparison: 'Celesta' and 'Whitella'

Summary: The leaf attitude of 'Pearl' is erect to semi-erect whereas it is semi-erect to horizontal in 'Celesta' and erect in 'Whitella'. 'Pearl' has few to a medium number of leaf lobes whereas both reference varieties have many. There is no anthocyanin colouration on the leaf petiole of 'Pearl' whereas it is medium on both reference varieties. The colour of the skin at the stem end of 'Pearl' is yellowish white to light green whereas it is dark pink red on 'Celesta' and pink on 'Whitella'. The non-thickened root of 'Pearl' is white whereas it is red on 'Celesta'.


LEAF: erect to semi-erect attitude
LEAF BLADE: rounded apex, light grey green, few to medium number of lobes, medium depth of incisions of margin
PETIOLE: absent or very weak anthocyanin colouration, medium width of attachment

RADISH: circular shape, rounded shoulder and apex, light green skin colour at stem end,
FLESH: main colour opaque white, moderate tendency to become pithy

Origin & Breeding History: 'Pearl' arose from the cross of the two parental lines, 'R19333' (female) by '2388' (male) conducted in 2002 at Enza Zaden GmbH & CoKG in Dannstadt-Schauerheim, Germany. In the resulting F1, the white tuber type was selected for further inbreeding. From 2002 to 2005, the best single plants were selfed. Two generations of negative mass selection were carried out in 2006 and 2007 to stabilize the open pollinated variety and to increase seed volume. In 2007, the line was uniform and stable enough to trial in different Enza breeding station locations.

Tests & Trials: Trials for 'Pearl' were conducted at Variety Rights Management, Oxford Station, Ontario during the 2012 and 2013 growing seasons. The trials consisted of 2 replications of each variety, with 11 rows per replicate, spaced approximately 0.10 metres between rows with a row length of 1.1 metres. Plants were thinned to a 5 cm spacing between plants in the row.

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Radish: 'Pearl'

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Radish: Reference variety, 'Celesta'

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Radish: Reference variety, 'Whitella'

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