31817
| Denomination: | '31817' |
|---|---|
| Synonym: | GI31817 |
| Trade name: | GI 31817 |
| Botanical Name: | Prunus |
| Applicant/Holder: |
Consortium Deutscher Baumschulen GmbH Hauptstr. 21 D-25474 Ellerbek Germany |
| Breeder: |
Sabine Franken-Bembenek, Giessen, Germany |
| Agent in Canada: |
BioFlora Inc. 38723 Fingal Line R.R. #1 St. Thomas, Ontario N5P 3S5 Canada Tel: 519-317-7511 |
| Application Date: | 2019-12-16 |
| Provisional Protection:: | 2019-12-16 |
| Application Number: | 19-10059 |
| Grant of Rights Date: | 2023-03-29 |
| Certificate Number: | 6801 |
| Grant of Rights Termination Date: | 2048-03-29 |
Variety Description
Variety used for comparison: 14813 (GI 14813)
Summary: The one year old shoot of '31817' is thin to medium in thickness whereas it is thick for '14813'. The upper side of the petiole of '31817' has medium to strong pubescence whereas '14813' has very weak to weak pubescence. The leaf blade of '31817' is light green with serrate incisions of the margin whereas the blade of '14813' is dark green with crenate and serrate incisions of the margin. The nectaries of '31817' are yellow while those of '14813' are green.
Description:
PLANT: upright growth habit, strong vigour, strong branching
ONE-YEAR-OLD SHOOT: medium to long internode length, medium to many lenticels, thin to medium thickness, pubescence present on middle third, medium to strong intensity of anthocyanin colouration of apex, medium to strong branching at end of summer
ONE-YEAR-OLD SHOOT (VEGETATIVE BUD): slightly held out in relation to shoot, medium sized, acute shaped apex, small to medium sized vegetative bud support, medium to strong intensity of anthocyanin colouration of young leaf (during rapid growth)
LEAF: medium to large blade length to petiole length ratio, medium to long stipules
PETIOLE: medium length, medium to strong pubescence of upper side, deep groove
LEAF BLADE: long, medium to broad, light green upper side, weak to medium glossiness upper side, medium length to width ratio, elliptic shape, obtuse shaped base, long tip, right angled apex (excluding tip), strong to very strong pubescence of lower side at apex, deep serrate shaped incisions of the margin
LEAF NECTARIES: predominantly two present, predominantly on base of leaf blade, yellow, round
Flowers: present
Origin & Breeding History: '31817' originated from a cross between an unknown female parent variety of Prunus canescens and an unknown male parent variety of Prunus avium. The cross was made in Giessen, Germany in 1970. The new variety was evaluated as a rootstock by grafting with different varieties and planted in multiple orchard locations. '31817' was selected in 1985 in Ahrensburg, Germany based on plant growth, fruit production in poor soils, ploidy, growth habit when un-grafted, and disease resistance.
Tests & Trials: The detailed description of '31817' is based on the UPOV report of Technical Examination, application number PRU 57, purchased from the Bundessortenamt, Hannover, Germany. The trial was conducted by the Bundessortenamt in Wurzen, Germany in 2014 and 2015.
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Cherry: '31817'
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Cherry: '31817'
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