KAS9

Apple

Variety Description

Varieties used for comparison: 'Novaspy' and 'Empire'

Summary: 'KAS9' has a longer leaf with a longer petiole than 'Novaspy' and 'Empire'. The fruit of 'KAS9' are larger and a darker red than 'Novaspy' and 'Empire'. 'KAS9' has a slight pink tinge to the flesh of the fruit while 'Novaspy' and 'Empire' do not. 'KAS9' harvest maturity is later than both reference varieties.

Description:

TREE: strong vigour, ramified, spreading habit, bearing on spurs and long shoots
ONE-YEAR OLD SHOOT: medium to thick, medium internode length, reddish brown colour, weak pubescence, few lenticels

LEAF: outward attitude in relation to shoot, large length/width ratio, medium green intensity, type 2 serrate margin on upper half, absent or very weak pubescence on lower side
PETIOLE: strong anthocyanin colouration at base

FLOWER: light pink bud in balloon stage, intermediate to overlapping arrangement of petals, stigma at the same level as anthers, medium beginning of flowering

FRUIT: large anthocyanin overcolour on young fruit, medium size, small height/diameter ratio, globose, moderate ribbing, absent or weak crowning at calyx end, very late harvest readiness, medium eating maturity, large sepal, medium sized eye, aperture of locules in transverse section are moderately opened
EYE BASIN: deep and wide
STALK: medium thickness, short
STALK CAVITY: medium depth and width
FRUIT SKIN: moderate glaucosity, absent or very weak greasiness, yellow ground colour, very large area of solid dark purple red flush with weakly defined narrow stripes of dark purple red over colour, medium area of russet around stalk attachment, absent or small area of russet on cheeks and around eye basin, many medium sized lenticels
FRUIT FLESH: firm, white with pinkish striping, weak browning one hour after being cut with a stainless steel knife, medium percentage of total sugars in fruit juice

DISEASE RESISTANCE: susceptible to Scab (Venturia inaequalis)

INSECT RESISTANCE: susceptible to Apple maggot (Rhagoletis pomonella), moderately susceptible to Codling moth (Laspeyresia pomonella)

Origin & Breeding History: 'KAS9', previously known as 'S23-06-52' originated from the cross between the selections 'NJ32' and 'NJ191456' made in 1963 at the Agriculture & Agri-Food Canada Kentville Research Station, Kentville, Nova Scotia. The resultant fruit were collected, their seeds dried and stored for approximately one month then placed in stratification media. Seedlings were kept and cared for in an extensive management approach. It was propagated on MM.106 rootstock and six trees were planted in a research trial in 1995 at the Kentville Research Station.

Tests & Trials: Tests and trials were conducted at the Atlantic Food & Horticulture Reseach Centre, Agriculture & Agri-Food Canada, Kentville, Nova Scotia during the summer/fall of 2008. There were 6 trees of each variety with spacing of 3.5 meters between trees within the row and 5 meters between the rows.

Comparison tables for 'KAS9' with reference varieties 'Novaspy' and 'Empire'

Leaf length (cm)

Petiole length (cm)

Fruit height (cm)

Fruit diameter (cm)

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Apple: 'KAS9' (left) with reference varieties 'Novaspy' (centre) and 'Empire' (right)

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Apple: 'KAS9' (left) with reference varieties 'Novaspy' (centre) and 'Empire' (right)

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Apple: 'KAS9' (centre) with reference varieties 'Empire' (left) and 'Novaspy' (right)