Japanese Plum

Denomination: 'V82053'
Trade name: Vampire
Botanical Name: Prunus salicina
Applicant/Holder: University of Guelph
Catalyst Centre
50 Stone Rd E, Ichthyology Building #92
Guelph, Ontario
N1G 2W1
Breeder: Jayasankar Subramanian, University of Guelph - Vineland Campus, Vineland Station, Ontario
Application Date: 2006-05-05
Application Number: 06-5472
Grant of Rights Date: 2007-11-30
Certificate Number: 3089
Date rights revoked: 2013-04-22

Variety Description

Varieties used for comparison: 'Early Golden', 'Shiro', 'Redheart' and 'Ozark Premier'

Summary: The time of ripening of 'V82053' is later than that of 'Early Golden', 'Shiro' and 'Redheart'. The fruit size of 'V82053 is larger than that of 'Early Golden', 'Shiro' and 'Redheart'. The general shape of the fruit of 'V82053' is ovate, whereas it is rounded for 'Early Golden' and 'Shiro', and heart-shaped for 'Redheart'. The apex of the fruit of 'V82053' is flat, whereas it is depressed in 'Early Golden' and pointed in 'Shiro', 'Redheart' and 'Ozark Premier'. The ground colour of the fruit skin of 'V82053' is red, whereas it is deep yellow for 'Early Golden', yellow for 'Shiro' and red to purple for 'Redheart'. The colour of the fruit flesh of 'V82053' is deep red, whereas it is yellow in 'Early Golden', yellow-green in 'Shiro', red in 'Redheart' and light orange in 'Ozark Premier'.


TREE: intermediate vigour, absent or very low suckering tendency, short to medium in height, medium to broad, medium to dense head, spreading to drooping branches
ONE YEAR OLD SHOOT: semi-erect, thin to medium thick, reddish brown, moderate intensity of colour, absent to very weak pubescence, few lenticels, short spur, many to very many flowers
WOOD BUD: ovoid, pointed apex, markedly held out, medium-sized decurrent bud support
CURRENT SEASON SHOOT: absent to very weak pubescence, moderate anthocyanin colouration

LEAF BLADE: horizontal in attitude, elliptic, acute angle of the tip, acuminate tip, V-shaped base, pale green, weak to moderate glossiness on upper side, moderate pubescence on lower side, crenate margin with secondary serrations
PETIOLE: moderate pubescence, medium deep groove, two glands on leaf base

COROLLA: small to medium in diameter
PEDUNCLE: medium thick, absent to very weak pubescence
RECEPTACLE: medium deep, absent to very weak pubescence on the inner surface at the white bud and on the outer surface
SEPAL: adpressed to the petals, elliptic, absence of pubescence on inner surface and outer surface
PETAL: white on upper and lower side, very few or no flowers with double petals, free, circular, moderate waviness of margin, medium base angle, notched upper margin, no pubescence on inner, outer side and margin

OVARY: stigma above anthers, very few or no supplementary pistils, no pubescence, no pubescence on the style
ANTHERS: reddish-orange just before dehiscence, self incompatible pollen

FRUIT: late season, large to very large, ovate, maximum diameter towards middle, symmetric in front view, shallow to medium deep suture, suture deeper at base, medium skin bloom, flat apex, no pubescence on apex and on stalk, deep stalk cavity
SKIN: medium to thick, no reticulation, red ground colour, greenish dots,
FLESH: deep red, moderately firm, coarse to medium in texture, medium-dry to juicy, low to moderate acidity, moderate to high sugar content
STONE: adherent to flesh, small relative to fruit, ovate in lateral view, globular in ventral view, round-elliptical in basal view, symmetric in profile and in ventral view, maximum width towards middle, well developed outgrowing keel, granular lateral surfaces, no fusion of dorsal groove margins, entire dorsal groove, no fusion lateral groove margins, medium to sharp edges, broad ventral zone, narrow stalk-end, obtuse stalk-end, intermediate apex

DISEASE RESISTANCE: moderately susceptible to leaf spot or shot hole (Coccomyces spp.), moderately resistant to black knot (Dibotryon morbosum), moderately resistant to brown spot (Monilinia fructicola), resistant to brown rot (Sclerotinia spp.)

Origin & Breeding History: The variety 'V82053' was developed at the Horticultural Research Institute of Ontario, Vineland Station, the tree fruit research station from the University of Guelph. The new plum variety arose from a cross made in 1983 between varieties 'V59011' (offspring of an open pollination of 'Early Golden') and 'Ozark Premier'.

Tests & Trials: Tests and trials for 'V82053' were conducted at the Vineland Campus of the Department of Plant Agriculture of the University of Guelph, Vineland Station, Ontario. The trial included 4 trees of each variety. All colour measurements were made using the 1966 Royal Horticultural Society (RHS) Colour Chart.

Comparison tables for 'V82053' with reference varieties 'Early Golden', 'Shiro', 'Redheart' and 'Ozark Premier'

One year-old shoots: internode length (mm)

  'V82053' 'Early Golden' 'Shiro' 'Redheart' 'Ozark Premier'
mean 28.1 25.9 24.8 31.6 30.1
std deviation 2.04 3.79 2.26 4.57 22.07

Leaf blade length (mm)

  'V82053' 'Early Golden' 'Shiro' 'Redheart' 'Ozark Premier'
mean 103.6 109.2 88.7 111.3 97.8
std deviation 9.56 11.96 6.39 19.49 9.81

Leaf blade width (mm)

  'V82053' 'Early Golden' 'Shiro' 'Redheart' 'Ozark Premier'
mean 46.1 109.2 46.4 50.4 44.3
std deviation 3.37 4.82 4.45 8.57 5.18

Petiole length (mm)

  'V82053' 'Early Golden' 'Shiro' 'Redheart' 'Ozark Premier'
mean 13.3 14.6 13.6 15.7 14.7
std deviation 1.71 1.73 1.34 1.39 1.38

Peduncle length (mm)

  'V82053' 'Early Golden' 'Shiro' 'Redheart' 'Ozark Premier'
mean 15.5 14.6 13.5 15.5 11.7
std deviation 2.33 2.57 2.65 2.58 2.29

Petal length (mm)

  'V82053' 'Early Golden' 'Shiro' 'Redheart' 'Ozark Premier'
mean 8.1 7.5 9.9 11.6 9.9
std deviation 0.61 0.53 0.86 0.93 1.43

Petal width (mm)

  'V82053' 'Early Golden' 'Shiro' 'Redheart' 'Ozark Premier'
mean 4.8 5.7 8.6 5.8 11.7
std deviation 0.35 0.49 0.66 0.63 2.29

Colour of petals (RHS)

  'V82053' 'Early Golden' 'Shiro' 'Redheart' 'Ozark Premier'
upper side 155D 155D 155D 155C 158D
lower side 155B 155C 155D 155D 155D

Click on image for larger view
Japanese Plum: 'V82053' (left) with reference varieties 'Early Golden' (centre left), 'Shiro' (centre), 'Redheart' (centre right) and 'Ozark Premier' (right)

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