KAR27

Apple

Variety Description

Varieties used for comparison: 'Novamac' and 'Liberty'

Summary: There are absent or very few lenticels on the one year old shoot of 'KAR27' whereas there are few on 'Novamac' and many on 'Liberty'. The length/width ratio of 'KAR27' is large whereas it is medium for both reference varieties. 'KAR27' has a smaller flower diameter than that of both reference varieties. The stigma is positioned below the anthers in 'KAR27' and are level with the anthers in both reference varieties. The fruit height of 'KAR27' is shorter than that of both reference varieties. The fruit of 'KAR27' are obloid in shape whereas it is conic in both reference varieties. The relative area of over colour of skin of 'KAR27' is very large whereas it is medium sized on both reference varieties. The eye basin of 'KAR27' is shallow whereas it is medium depth in 'Novamac' and deep in 'Liberty'.

Description:

TREE: medium vigour, ramified, spreading growth habit, bearing on spurs and long shoots
ONE-YEAR OLD SHOOT: medium thickness, short internodes, dark brown on sunny side, medium density of pubescence on distal half of shoot, absent or very few lenticels

LEAF: upwards attitude in relation to shoot, large length/width ratio, medium green, serrate type 1 margin on upper half, absent or very weak pubescence on lower side
PETIOLE: medium extent of anthocyanin colouration at base

FLOWER: predominantly light pink at balloon stage, overlapping arrangement of petals, stigma positioned below anthers, begins flowering mid-season

YOUNG FRUIT: very large extent of anthocyanin overcolour
FRUIT: small, small height/diameter ratio, obloid shape, absent or weak ribbing, absent or weak crowning at calyx end, small eye, short sepals, mid-season harvest and eating maturity
FRUIT SKIN: strong glaucosity, absent or weak greasiness, yellow ground colour, medium-sized area of russet around stalk attachment, absent or small area of russet on cheeks and around eye basin, medium number of small lenticels
OVERCOLOUR: relatively very large, dark purple red, pattern solid flush with weakly defined narrow stripes
STALK: long and thick
STALK CAVITY: shallow and medium width
EYE BASIN: shallow and medium width
FRUIT FLESH: medium firmness, cream, moderately open aperture of locules in transverse section

FRUIT QUALITY: absent or very weak browning of the flesh one hour after being cut, medium percentage of malic acid and total sugars in the juice

DISEASE REACTION: resistant to apple scab (Venturia inaequalis)

Origin & Breeding History: 'KAR27' arose from the cross 'C13-05-01' as the female parent with 'S34-01-19' as the male parent which was conducted in 1978 at the Agriculture & Agri-Food Research Station in Kentville, Nova Scotia. Seedlings of the initial cross were grafted on the semi-dwarf rootstock MM.106 and were planted out in a replicated trial in 1978. The selection criteria included freedom from apple scab and other diseases, fruit colour and flavour.

Tests & Trials: Tests and trials were conducted in 2008 and 2009 at the Agriculture & Agri-Food Horticulture Research Center in Kentville, Nova Scotia. The original planting consisted of 7 trees of 'KAR27', 12 trees of 'Novaspy' and 9 trees of 'Liberty'. The trial was planted in 1998 in a RCB design, with trees spaced 3.5 meters apart within the row and rows spaced 5.0 meters apart.

Comparison tables for 'KAR27' with reference varieties 'Novamac' and 'Liberty'

Leaf length (cm)

Petiole length (mm)

Flower diameter (when petals pressed in hoirzontal position( (cm)

Fruit height (cm)

Click on image for larger view

Apple: 'KAR27' (left) with reference varieties 'Novamac' (centre) and 'Liberty' (right)