Variety sheet
Gravensteiner
Origin
Chance seedling
Synonyms
Blumenkalvill, Diels Sommerkönig, Ernteapfel, Graasten, Grafenapfel, Haferapfel, Marbapfel, Pomme de Gravenstein, Sommer-Bummenkalvill, Sommerkalvill, Stoemling, Tom Harryman
Agronomic Profile
Flowering:
early, triploid
Vigour:
strong
Susceptibility:
medium Susceptibility to scab, medium Susceptibility to powdery mildew
Productivity:
Productivity medium, tends to biennial bearing, tends to preharvest fruit drop
Harvest time:
8-6 Week before Golden Delicious
Fruit
Size and shape:
large, flattened globular, rectangular
Ground and overcolour:
Ground colour green; Overcolour red, mottled; medium (50%)
Susceptibility to russeting:
low rustiness in the calyx/eye basin and/or in the stalk cavity(<5%)
Firmness of the pulp:
6,9-7,9 kg/cm ²at harvest
Tendency to browning of pulp:
strong oxidation
Sugar content:
10,6-11,2 °Brix at harvest
Acid content:
10,3-12,7 g/L MA at harvest
Total content of Polyphenols1:
in the peel: 271,5 ± 52,8 mg Catechin/ 100 g FW; in the pulp: 89,3 ± 9,2 mg Catechin/ 100 g FW
TAC1:
in the peel: 353,2 ± 61,5 mg Trolox/ 100 g FW; in the pulp: 128,2 ± 24,2 mg Trolox/ 100 g FW
Content of Anthocyanin2:
n. a.
Vitamin C1:
in the peel: 7,1 ± 1,4 mg/100 g FW; in the pulp: 2,3 ± 0,1 mg/100 g FW
Pectin1:
in the pulp: 1,0 ± 0,2 g/100g FW
Flavour:
gusto leggermente acido con aroma gradevole ed equilibrato
Storage:
in cool store up to 1 Month
Characteristics:
tendency to bitter pit
Juice production
Yield:
yield medium
Stability of the colour:
average oxidation after juice production
Sugar content:
10,3 °Brix
Acid content:
7,3 g/L MA
pH:
3,41
Total content of Polyphenols:
25,7 ± 0,9 mg Catechin/100 mL juice
TAC:
35,9 ± 1,0 mg Trolox/100 mL juice
Content of Anthocyanin2:
n. a.
Vitamin C:
1,82 ± 0,01 mg/L juice
Photogallery
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