CGN Germplasm Search
Malus domestica (Gerrit Roelof; Gerrie Roelof; Gert Roelof; Jan Willem)
Identifiers
Accession number:
GEN009
Accession name:
Gerrit Roelof; Gerrie Roelof; Gert Roelof; Jan Willem
Crop (and subcrop type):
apple (Sweet apple)
Population type:
Land variety
SMTA status
SMTA needed:
Yes
Classification
Genus:
Malus
Species:
domestica
Sub-taxon:
Origin information
Collecting number:
Country of origin:
Netherlands
Collection site:
Gelderland, Betuwe
Latitude / Longitude:
52,2 / 5,4, uncertainty 181007 meter
Altitude (m):
Collecting date:
Donor institute:
Fruitteelt Praktijk Onderzoek, Randwijk, Netherlands
Donor number:
Other numbers:
Origin address:
Origin type:
Other information
DOI:
10.18730/108VA
https://doi.org/10.18730/108VA
Pedigree:
most close relatives are French Cider cultivars
Additional passport information:
Local variety
Botanic name given by institute:
Gerrie Roelof, mentioned in newspaper in 1940
Observations
Tree characteristics
stem diameter
40 -45
tree growth speed
moderate
branche angle
>90
new shoot growth
15 - 20
new shoot regrowth
moderate
extreme
buds/spurs density
moderate
extreme
general tree architecture
acceptable
excellent
Fruit characteristics
fruit size
85 - 95
fruit shape
globose
fruit firmness
very hard
fruit base color
green-yellow
fruit over color
red
fruit over color perc.
<50
skin thickness
medium
ripeness
premature
Taste characteristics
sugar content
<13
acid/sugar ratio
slightly sour
taste
poor
Agronomical characteristics
fruit drop perc.
60 - 70
fruit yield
<5
Diseases
apple powdery mildew
susceptible
probably resistant
apple scab
susceptible
probably resistant
apple canker
susceptible
possibly resistant
Pictures
The following pictures are available for this accession.
46 fruit3(Randwijk 2012).JPG
46 fruits.jpg
46 Overview Randwijk 2022.jpg
46 architecture(Randwijk 2012).JPG
46 fruit(Randwijk 2012).JPG
46 fruit1(Randwijk 2012).JPG
46 fruit2(Randwijk 2012).JPG
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