World vine varieties
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Merbein Seedless

 CSIRO, Division of Horticulture, Merbein 3505
Young shoot : form of tip:opened
Young shoot : intensity of anthocyanin coloration of tip:absent or very weak
Young shoot : density of prostrate hairs of tip:medium
Shoot : attitude:semidrooping
Shoot : color of dorsal side of internodes:green with red stripes
Shoot : color of ventral side of internodes:green with red stripes
Shoot : color of dorsal side of nodes:red
Shoot : color of ventral side of nodes:red
Tendrils : distribution on the shoot:discontinuous (2 or less)
Tendrils : length:
Young leaf : color of the upper side:green
Young leaf : Density of prostrate hairs on main veins:none or very sparse
Mature leaf : size:large
Mature leaf : length:short
Mature leaf : shape of blade:circular
Mature leaf : number of lobes:five
Mature leaf : color of the upper side of blade:dark green
Mature leaf : undulation of blade between main and lateral veins:only near petiole
Mature leaf : profile:revolute
Mature leaf : shape of teeth:both sides rectilinear
Mature leaf : length of teeth:medium
Mature leaf : length of teeth compared with their width at the end of the base:medium
Mature leaf : general shape of petiole sinus:closed
Mature leaf : shape of base of petiole sinus:V-shaped
Mature leaf : shape of upper leaf sinuses:lobes slightly overlapping
Mature leaf : shape of base of upper leaf sinuses:V-shaped
Mature leaf : density of prostrate hairs between the veins (lower side):none or very sparse
Mature leaf : length of petiole:medium
Mature leaf : length of petiole compared to middle vein:longer
Woody shoot : cross section:circular
Woody shoot : surface:smooth
Woody shoot : main color:yellow
Inflorescence : sex of flower:hermaphrodite
Inflorescence : insertion of 1st inflorescence:3rd or 4th node
Inflorescence : number of inflorescences per shoot:1,1 to 2 inflorescences
Inflorescence : length of proximal inflorescence:medium
Bunch : number of bunches per shoot:1,1 to 2 bunches
Bunch : size:very large
Bunch : length:very long
Bunch : density:medium
Bunch : number of berries:very many
Bunch : length of peduncle:long
Bunch : lignification of peduncle:strong
Berry : Size:medium
Berry : length:short
Berry : uniformity of size:uniform
Berry : shape:short elliptic
Berry : cross section:circular
Berry : color of skin:green-yellow
Berry : uniformity of color of skin:uniform
Berry : bloom:weak
Berry : thickness of skin:thin
Berry : intensity of the color of flesh:not colored or very slightly colored
Berry : juiciness of flesh:juicy
Berry : must yield:high
Berry : firmness of flesh:firm
Berry : degree of firmness of flesh:medium
Berry : classification of flavor:neutral
Berry : length of pedicel:very short
Berry : separation from pedicel:
Berry : degree of separation from pedicel:easy
Berry : presence of seeds:none corinth type
Time of bud burst:late
Time of full bloom:medium
Begin of berry ripening (veraison):early
Physiological stage of full maturity of the berry:medium
Autumn coloring of leaves:yellow
Vigor of shoot growth:very strong
Growth of axillary shoots:strong
Length of internodes:medium
Diameter of internodes:medium
Resistance to iron chlorides (salt):very high
Resistance to Plasmopara vitícola:absent
Degree of resistance to Plasmopara (leaf):very little
Degree of resistance to Plasmopara (cluster):absent
Resistance to Powdery Mildew (Oidium):absent
Degree of resistance to Oidium (leaf):medium
Degree of resistance to Oidium (cluster):very little
Resistance to Botrytis:absent
Degree of resistance to Botrytis (leaf):little
Degree of resistance to Botrytis (cluster):very little
Tolerance to Phylloxera vitifolii:absent
Degree of tolerance to Phylloxera (root):very little
Percentage of berry set:very high
Weight of a single bunch:medium
Single berry weight:low
Bunch weight / ha:high
Sugar content of must:high
Total acid content of must:

Data from OIV
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Curso de viticultura