DrisStrawSixty

Strawberry

Note: The applicant has requested an exemption from compulsory licensing to allow time to multiply and distribute propagating material of the variety. If the exemption is granted, it may be allowed for two years from the date rights are granted for the variety.

Variety Description

Varieties used for comparison: 'DrisStrawTwentyOne' (Amado) and 'DrisStrawThirtyOne' (Passillo)

Summary: The plants of 'DrisStrawSixty' begin flowering very late in the season and begin fruit ripening late in the season whereas the plants of the reference varieties begin flowering and fruit ripening mid-season. The plants of 'DrisStrawSixty' have absent or very few stolons whereas the plants of 'DrisStrawThirtyOne' have few stolons. The stolon of 'DrisStrawSixty' has an absent or very weak to weak intensity of anthocyanin colouration whereas the stolon of 'DrisStrawThirtyOne' has a weak to medium intensity of anthocyanin colouration. The base of the terminal leaflet for 'DrisStrawSixty' is obtuse in shape whereas those of the reference varieties are acute. The petiole of 'DrisStrawSixty' is short whereas the petiole of 'DrisStrawTwentyOne' is short to medium in length and that of 'DrisStrawThirtyOne' is long. The fruit of 'DrisStrawSixty' has strong glossiness whereas the fruit of 'DrisStrawTwentyOne' has a medium degree of glossiness and that of 'DrisStrawThirtyOne' has weak glossiness.

Description:

PLANT: day neutral bearing type, semi-upright growth habit, sparse to medium dense foliage, medium amount of vigour
STOLON: absent or very few, absent or very weak to weak intensity of anthocyanin colouration, absent or sparse density of pubescence

PETIOLE: short, slightly outwards attitude of hairs
STIPULE: absent or very weak intensity of anthocyanin colouration
LEAF: small to medium size, medium green upper side, medium amount of blistering and glossiness on upper side, no variegation
TERMINAL LEAFLET: length equal to width, obtuse base, serrate to crenate margin, concave in cross-section

FLOWERING: begins very late
INFLORESCENCE: positioned above foliage, medium to many flowers
PEDICEL: slightly outwards attitude of hairs
FLOWER: calyx same size as corolla, overlapping petal arrangement, stamen present
PETAL: length equal to width, white inner side

CALYX: attachment level with fruit, diameter much larger than fruit, outwards attitude of sepals, weak to medium adherence to fruit
FRUIT: begins ripening late, length equal to width, medium size, conical shape, none or very slight difference in shape between terminal fruit and other fruit, medium to firm, absent or small cavity
FRUIT SURFACE: orange red, slightly uneven to strongly uneven colour distribution, strong glossiness, even or slightly uneven, absent or very narrow to narrow band without achenes, achenes positioned above surface
FRUIT FLESH: light pink, light red core

Origin & Breeding History: DrisStrawSixty' originated from a cross conducted in July 2009 in Ventura County, California, USA. The cross was made between the female parent 'DrisStrawSeventeen' and the proprietary male parent variety '540Q 54'. A single plant was selected for asexual propagation by tissue culture and vegetative cuttings in March 2010 in Shasta County, California, USA based on yield, eating quality, plant size, and bearing habit.

Tests & Trials: Trials for 'DrisStrawSixty' were conducted in Chilliwack, British Columbia during the 2021 growing season. The plots were transplanted in April 2020 into plastic mulch with drip irrigation. The plots were arranged in a RCB design. Each variety consisted of 3 replicates per variety with 10 plants per replicate for a total of 30 plants of each variety. Plants were spaced approximately 20 centimetres apart within the row and spaced approximately 3 metres apart between rows. Measured characteristics were based on 10 measurements.

Click on image for larger view

Strawberry: 'DrisStrawSixty' (centre) with reference varieties 'DrisStrawTwentyOne' (left) and 'DrisStrawThirtyOne' (right)

Click on image for larger view

Strawberry: 'DrisStrawSixty' (centre) with reference varieties 'DrisStrawTwentyOne' (right) and 'DrisStrawThirtyOne' (left)