|Trade name:||Driscoll Ambrosia|
|Botanical Name:||Rubus idaeus|
A California Corporation
P.O. Box 50045, 345 Westridge Drive
United States of America
Miguel H. Ahumada, Ojai, United States of America
Peter Martini, Driscoll Strawberry Associates, Inc., Marina, United States of America
Richard E. Harrison, Aptos, United States of America
Brian K. Hamilton, Richmond, United States of America
|Agent in Canada:||
Expert Agriculture Team Ltd.
46420 Prairie Central Road
Chilliwack, British Columbia
|Grant of Rights Date:||2016-01-06|
|Grant of Rights Termination Date:||2036-01-06|
Varieties used for comparison: 'Maravilla' and 'Heritage'
Summary: The intensity of anthocyanin colouration on the current season's cane is weak to medium on 'DrisRaspOne' whereas it is strong on the reference varieties. The plants of 'DrisRaspOne' produce shorter previous season's canes than 'Maravilla' and shorter current season's canes than 'Heritage'. On the current season's cane, the density of spines on 'DrispRaspOne' is sparse to medium whereas it is very sparse on'Marvilla'. On the current season's cane, the spine of 'DrisRaspOne' is longer with a larger base than the spine of 'Maravilla' and shorter with a smaller base than the spine of 'Heritage'. In cross-section, the profile of the leaflet is concave for 'DrisRaspOne' whereas it is convex for the reference varieties. The terminal leaflet of 'DrisRaspOne' is shorter and broader than that of 'Heritage'. The fruiting lateral of 'DrisRaspOne' on the previous year's cane is shorter than that of both reference varieties. On the current season's cane, flowering begins very late for 'DrisRaspOne' whereas flowering begins late for 'Maravilla' and mid-season for 'Heritage'. On the current season's cane, fruit ripening begins late to very late for 'DrisRaspOne' whereas ripening begins mid to late season for 'Maravilla' and early to mid-season for 'Heritage'.
PLANT: upright growth habit, bears fruit on both previous season's cane in summer and on current season's cane in autumn
VERY YOUNG SHOOT DURING RAPID GROWTH: no anthocyanin colouration on middle third, weak intensity of anthocyanin colouration at apex
PREVIOUS SEASON'S CANE: vegetative bud burst occurs mid-season, flowering begins mid-season, fruit ripening begins mid to late season, fruiting period lasts medium length of time
CURRENT SEASON'S CANE: emerges mid-season, many to very many, medium to strong bloom, weak to medium intensity of anthocyanin colouration, short to medium internode length, short to medium length of vegetative bud, flowering begins very late in season, fruit ripening begins late to very late in season
SPINE ON CURRENT SEASON'S CANE: sparse to medium density, small base, short, purplish brown
LEAF ON CURRENT SEASON'S CANE: light to medium green on upper side, predominantly five leaflets
LEAFLET ON CURRENT SEASON'S CANE: concave in cross-section, medium rugosity, lateral leaflets not touching
FLOWER: medium size
FRUITING LATERAL: semi-erect attitude
PEDUNCLE: medium to strong intensity of anthocyanin colouration
PEDICEL: few to medium number of spines
FRUIT: short to medium length, narrow to medium width, very small length to width ratio, broad conical to medium conical shape in lateral view, single drupe is medium to large, medium red, weak to medium glossiness, soft to medium firmness, weak to medium adherence to plug
Origin & Breeding History: 'DrisRaspOne' arose from a controlled cross between 'T186.1' (female parent) and 'Maravilla' (male parent). Breeding was conducted in Santa Cruz, California in 2002. 'DrisRaspOne' was selected from the seedling population in September 2002. 'DrisRaspOne' was asexually propagated in Santa Cruz, California and underwent propagation and continued testing there. Selection criteria included yield, vigour, fruit size, taste, and colour.
Tests & Trials: The comparative trials for 'DrisRaspOne' were conducted in Chilliwack, British Columbia during the 2014 growing season. The plots were planted in the spring of 2013 in a randomized complete block design (RCBD). Each variety consisted of 3 replicates with 5 plants per replicate for a total of 15 plants of each variety. Plants were spaced approximately 61 centimetres apart within rows and 3 metres between rows.
Comparison tables for 'DrisRaspOne' with reference varieties 'Maravilla' and 'Heritage'
Length of previous season's cane (cm)
Length of current season's cane (cm)
Terminal leaflet length (cm)
Terminal leaflet width (cm)
Length of fruiting lateral from previous season's cane (cm)
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