DrisBlackEleven

Blackberry

Variety Description

Varieties used for comparison: 'DrisBlackNine' and 'DrisBlackTen'

Summary: The plants of 'DrisBlackEleven' have many new canes whereas the plants of both reference varieties have a medium number of new canes. 'DrisBlackEleven' has many branches on the dormant cane whereas 'DrisBlackTen' has a medium number of branches on the dormant cane. The anthocyanin colouration on the young shoot is of medium intensity for 'DrisBlackEleven' whereas it is absent or weak intensity on both reference varieties. The leaf type on 'DrisBlackEleven' is palmate whereas it is intermediate type on 'DrisBlackNine' and odd-pinnate type for 'DrisBlackTen'. The flower diameter on 'DrisBlackEleven' is larger than that for both reference varieties. The length to width ratio of the fruit of 'DrisBlackEleven is large whereas it is medium for both reference varieties.

Description:

PLANT: upright to semi-upright growth habit, many new canes, suckering from roots

YOUNG SHOOT (during rapid growth): medium intensity of anthocyanin colouration, medium intensity of green colour, medium number of glandular hairs
DORMANT CANE: strong intensity of anthocyanin colouration, many branches distributed over whole length, rounded to angular in cross-section
PREVIOUS YEAR'S CANE: begins flowering mid-season, begins fruit ripening early to mid-season
CURRENT YEAR'S CANE: begins flowering and fruit ripening mid-season
SPINES: medium number, large, outwards attitude of apex in relation to cane

PETIOLE: small stipules
LEAF: late leaf bud burst, predominantly five leaflets per leaf, palmate type, medium intensity of green on upper side, medium degree of glossiness on upper side
TERMINAL LEAFLET: lobing absent, u-shaped in cross-section, weak undulation of margin, weak blistering between veins, medium to deep bi-serrate incisions of margin

FLOWER: white, sparse glandular hairs on pedicel

FRUITING LATERAL: medium number of prickles
FRUIT: fruiting on current season cane, large length to width ratio, very many medium sized drupelets, long conical shape in longitudinal section, black

Origin & Breeding History: 'DrisBlackEleven' is the result of a cross between 'BD467.1' (female parent) and 'XX537.1' (male parent) conducted in April 2006 in Santa Cruz County, California, USA. 'DrisBlackEleven' was selected for its primocane flowering and flavour. 'DrisBlackEleven' was further propagated and underwent additional testing in Santa Cruz, California from 2012 to 2014.

Tests & Trials: The comparative trial for 'DrisBlackEleven' was conducted in Chilliwack, British Columbia during the 2018 growing season. The plots were arranged in a randomized complete block design. Each variety was planted in 3 replicates with 3 plants per replicate for a total of 9 plants of each variety. Plants were spaced approximately 1.07 metres apart. Measurements were taken from 9 plants or parts of 9 plants of each variety. Mean differences were significant at the 5% confidence probability level based on a paired Student's t-test.

Comparison table for 'DrisBlackEleven' with reference varieties 'DrisBlackNine' and 'DrisBlackTen'

Flower diameter (cm)

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Blackberry: 'DrisBlackEleven' (left) with reference varieties 'DrisBlackNine' (centre) and 'DrisBlackTen' (right)