Plant Variety Journal - IP Australia

Details of Application
Application Number 2008/133
Variety Name ‘JMBICOLOUR’
Genus Species Solanum tuberosum
Common Name Potato
Synonym Nil
Accepted Date 20 Jun 2008
Applicant Irish Potato Breeders, Co. Dublin, Ireland
Agent Mitolo Group, Virginia, SA
Qualified Person John Fennell
Details of Comparative Trial
Location Waikerie SA.
Descriptor Potato (Solanum tuberosum) TG/23/6.
Period Apr to Aug 2008.
Conditions Plantlets ex-quarantine raised from tissue cultures and planted into
potting mix in 200mm diameter plastic pots on 1 Apr 2008. Pots
placed on benches in a screened polythene clad greenhouse. None
of the varieties in trial produced flowers due to daylength
conditions.
Trial Design Randomised complete block design. Three replicates of 40 plants
per variety.
Measurements Observations and measurements taken on 28 May 2008.
Measurements taken of plant height, length of longest leaf,
terminal leaflet length and width. Flower characteristics were
compared using published UPOV information. Tuber
characteristics were recorded in Aug 2008.
RHS Chart - edition Nil
Origin and Breeding
Controlled pollination: Flower of maternal parent ‘Cara’ emasculated and pollinated by
pollen transferred from male parent DHS 70 727 4. Berries harvested and seed extracted.
Seeds grown under protected conditions and one minituber harvested from each plant (=
genotype). Minitubers planted in a field trial representing several thousands of unique
genotypes. Tubers harvested from selected genotypes (by eye selection for tuber size,
shape, maturity time and disease freedom. Tubers planted of selected genotypes for more
intensive selection. Replicated and multi-site evaluation and selection trials conducted in
the United Kingdom in subsequent years culminating in the selection of breeding line BO1
for commercial release as ‘JMBicolour’ in 2005. Breeder: John Mara, Malahide, Country
Dublin, Ireland.
Choice of Comparators Characteristics used for grouping varieties to identify the most similar
Variety of Common Knowledge
Organ/Plant Part Context State of Expression in Group of
Varieties
Lightsprout proportion of blue in anthocyanin
colouration of base
absent or low
Flower corolla proportion of blue in anthocyanin absent or low
colouration on inner side
Tuber skin colour red parti-coloured
Tuber colour of flesh white
Tuber shape short oval
Page 381 of 550
Plant Varieties Journal Vol. 21 No.3