Plant Variety Journal - IP Australia

Details of Application
Application Number 2005/066
Variety Name ‘Merbein 6262’
Genus Species Vitis cinerea
Common Name Sweet Winter Grape
Synonym Nil
Accepted Date 19 Apr 2005
Applicant Commonwealth Scientific and Industrial Research
Organisation, Canberra, ACT
Agent N/A
Qualified Person Stephen Sykes
Details of Comparative Trial
Location Merbein, VIC.
Descriptor Grapevine (Vitis) TG/50/8.
Period 2005-2006.
Conditions Vines for comparative trial purposes were grown in pots
under shadehouse conditions. Ampelographic data were also
collected from vines growing under vineyard conditions.
Trial Design ‘Merbein 6262’ was compared with 14 other rootstock
varieties or selections, viz. ‘Borner’ (V. riparia x V. cinerea),
‘Freedom’ [a complex multi-species hybrid (V. labrusca, V.
riparia, V. vinifera) complex hybrid) x (V. rupestris x V.
candicans)], ‘41B’ (V. vinifera Cv. Chasselas x V.
berlandieri), ‘125AA Kober’ (V. berlandieri x V. riparia),
‘5C Teleki’ (V. berlandieri x V. riparia), ‘K48-38 Lider’ [V.
rupestris x V. candicans (aka Vitis champini) x V. vinifera Cv.
Sultanina], ‘K48-45 Lider’ [V. rupestris x V. candicans (aka
Vitis champini) x V. vinifera Cv. Sultanina], ‘K48-48 Lider’
[V. rupestris x V. candicans (aka Vitis champini) x V. vinifera
Cv. Sultanina], ‘Cosmos 10A’ (V. berlandieri x V. riparia),
‘Dogridge’ [V. rupestris x V. candicans (aka Vitis champini)],
CSIRO selections ‘Merbein 5489’ (V. berlandieri Ressequier
No. 1 x V. berlandieri 7651), ‘Merbein 5512’ (V. berlandieri
Ressequier No. 1 x V. berlandieri Mazade), ‘M61-19’ (V.
cinerea 55 x V. cinerea 194-1) and ‘M61-36’ (V. cinerea 55 x
V. cinerea 194-1). The trial included three other Vitis
rootstock varieties for which Part 1 PBR applications have
been submitted. As a result, the comparators for these other
varieties were also included and the data were analysed
together. Vines were propagated from dormant cuttings
collected during winter 2005. They were struck in a
sand/perlite mix in a cold mist house over bottom heat.
Rooted cuttings were potted into a standard potting mix and
transferred to a shadehouse in 12l pots. The vines were
allowed to grow as single shoots by removing lateral shoots
as they developed. When shoots had grown to a length
exceeding 1m, they were pruned to two buds and the
youngest bud was allowed to develop. The vines were again
allowed to grow as single shoots by removing lateral buds as
they developed. When shoots had reached a length exceeding
1.5m, they were again pruned and leaves at nodes 5-10
retained for measurements to be recorded. There were 14
comparator varieties with 15 vines per variety. The trial was
Page 478 of 550
Plant Varieties Journal Vol. 21 No.3