R10-45

Apple

Variety Description

Variety used for comparison: 'Cripps Pink' (Pink Lady)

Summary: The one-year-old shoot of 'R10-45' is medium to thick with few lenticels whereas that of ‘Cripps Pink' is of thin to medium thickness with a medium number of lenticels. The leaf blade of ‘R10-45' is narrower than that of ‘Cripps Pink'. At the balloon stage, the flower of 'R10-45' is predominantly purple while that of ‘Cripps Pink' is predominantly dark pink. The fruit stalk of 'R10-45' is thick and shorter than that of ‘Cripps Pink', which is of thin to medium thickness. The fruit shape of 'R10-45' is globose to conic while that of ‘Cripps Pink' is cylindrical to globose. The sepal of the fruit of 'R10-45' is of medium to long whereas that of ‘Cripps Pink' is very long. The fruit skin of 'R10-45' has narrow stripes and medium to large lenticels while that of ‘Cripps Pink' has no stripes and small to medium sized lenticels. The eye basin of the fruit of 'R10-45' is narrow whereas that of ‘Cripps Pink' is of medium width. The time of harvest and eating maturity for 'R10-45' is late whereas it is very late for ‘Cripps Pink'.

Description:

TREE: medium vigour, ramified type, spreading growth habit, fruit bearing on spurs and long shoots, begins flowering early, late fruit harvest and eating maturity
ONE-YEAR-OLD SHOOT: medium to thick, medium to dark brown on side facing sun, absent or very sparse to sparse pubescence on distal half, few lenticels

PETIOLE: ranging between small and large but predominantly medium to large extent of anthocyanin colouration from base
LEAF BLADE: upwards attitude in relation to shoot, large to very large length to width ratio, medium to dark intensity of green on upper side, bicrenate incisions of margin on distal half, absent or sparse density of pubescence on lower side

FLOWER: predominantly purple at balloon stage, intermediate arrangement of petals, stigmas positioned above anthers
YOUNG FRUIT: medium extent of anthocyanin over colour
FRUIT: medium to large, small height to diameter ratio, globose to conic shape, absent or weak to moderate degree of ribbing, absent or weak crowning at calyx end, medium to long sepal
FRUIT SKIN: strong bloom, absent or weak degree of greasiness, yellow to yellow green ground colour, large to very large relative area of over colour, light to medium pink red to medium to dark red over colour with a flushed, striped and mottled pattern, narrow stripes, medium sized area of russet around stalk attachment, absent or small area of russet on cheeks, absent or small area of russet around eye basin, many medium to large lenticels
FRUIT STALK: thick
FRUIT STALK CAVITY: medium to deep, narrow to medium width
FRUIT EYE: medium sized
FRUIT EYE BASIN: medium to deep, narrow
FRUIT FLESH: medium to firm, yellowish coloured, moderately open aperture of locules in transverse section

Origin & Breeding History: ‘R10-45' originated from a traditional cross between ‘Honeycrisp' and ‘Cripps Pink' conducted in Ephrata, Washington, USA in 2002. Resulting seedlings were grafted onto M9 rootstocks, which were planted in 2006 in Ephrata, Washington. The first fruit was observed in October 2007 with ‘R10-45' selected in late 2007 based on fruit texture, flavour and juiciness in Ephrata, Washington, USA. Subsequent propagations were made in 2008 on both M9 and EMLA 26 rootstocks and planted in 2009.

Tests & Trials: The comparative trial for ‘R10-45' was conducted from 2024 to 2025 at Summerland Research and Development Centre in Summerland, British Columbia. The trial consisted of 5 trees of each variety planted in 2018 on M9.Nic29 rootstock. Trees were planted approximately 0.6 metres apart within a row and the rows were 3 metres apart. Observations and measurements were taken on 5 trees, or 10 parts of trees, for all varieties. Mean differences were significant at the 5% confidence probability level based on a paired Student's t-test.

Comparison tables for 'R10-45' with reference variety 'Cripps Pink'

Leaf blade width (cm)

Fruit stalk length (cm)

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Apple: 'R10-45' (right) with reference variety 'Cripps Pink' (left)

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Apple: 'R10-45' (left) with reference variety 'Cripps Pink' (right)