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47. Volume 14- Number 2 - IP Australia

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PLANT VARIETIES JOURNAL 2001 VOL <strong>14</strong> NO. 2<br />

excluded because it is a freestone nectarine where as the<br />

candidate is clingstone.<br />

Comparative Trial The description is based on overseas<br />

data gathered from U.S. Plant Patent 10,926. The<br />

characteristics were verified under <strong>Australia</strong>n conditions.<br />

The trial trees are planted at Buchanan’s Nursery<br />

Tenterfield, NSW. They have been observed for the past two<br />

years. From all of the observations the variety is performing<br />

the same in <strong>Australia</strong> as it does in the USA. It has proven to<br />

be distinct, uniform and stable through several propagation<br />

cycles.<br />

Prior Applications and Sales<br />

Country Year Current Status Name Applied<br />

USA 1997 Granted ‘August Pearl’<br />

First Sold in the USA in Dec 1997.<br />

Description: Peter Buchanan, Buchanan’s Nursery, Tenterfield, NSW.<br />

‘Kay Pearl’ syn Kay Ice<br />

Application No: 2000/271 Accepted: 6 Nov 2000.<br />

Applicant: Lowell G Bradford & Norman G Bradford,<br />

Le Grand, California, USA.<br />

Agent: Buchanan’s Nursery, “Monkstadt”, via Tenterfield,<br />

NSW.<br />

Characteristics (Figure 30) Tree: size large, vigour strong,<br />

growth habit spreading and dense, very productive, regular<br />

bearing. Trunk: size medium, texture medium to rough,<br />

bark colour greyish brown (5.5YR3.5/1.8); lenticels<br />

numerous, colour: strong brown (4.6YR3.5/7.6) average<br />

size 3.2-9.5mm. Branches: size medium, texture smooth on<br />

1st year wood, increasing roughness with age, colour of 1st<br />

year wood topside: dark red (4.0R2.8/6.8) when exposed to<br />

sunlight, 1st year wood underside brilliant yellow green<br />

(4.9GY8.2/9.1), older wood moderate yellowish brown<br />

(9.5YR4.4/3.9); lenticels numerous, small, colour light<br />

orange yellow (9.4YR8.3/6.8), average size 1.6mm. Leaf<br />

Blade: size medium, average length 139.7mm, average<br />

width 38.1mm, shape elliptical, apex acuminate, base acute,<br />

surface smooth, colour of dorsal surface moderate olive<br />

green (5.7GY3.6/4.8), ventral surface moderate yellow<br />

green (4.8GY6.0/5.0), margin finely serrated, venation<br />

pinnately net veined. Petiole: average length 9.5mm,<br />

average thickness 1.6mm, colour: moderate yellow green<br />

(4.8GY6.0/5.0). Stipules: numerous, 2-6 per growing tip,<br />

average length 9.5mm. Nectaries: numbers 2-4 per leaf,<br />

position slightly alternately positioned on petiole and base<br />

of blade, size medium, shape globose, colour light yellow<br />

green (5.0GY8.4/5.6). Flower bud: size medium, length<br />

medium, form free, surface pubescent. Flowers: blooming<br />

period early, size large, colour pale pink (2.0R8.7/2.1).<br />

Fruit: size uniform, large average diameter axially 66.7mm,<br />

average transversely in suture plane 69.9mm, shape<br />

globose, uniform, mostly symmetrical with a few<br />

unsymmetrical, inconspicuous suture line extending from<br />

the base to slightly beyond the apex, having a slight<br />

depression beyond the pistil point. Stalk cavity: flaring,<br />

circular, suture showing on one side, depth 9.5mm, breadth<br />

19.1mm, base rounded and slightly truncate, apex rounded,<br />

pistil point negligible in length, depressed within the suture.<br />

Stalk: medium, average length 9.5mm, average width<br />

4.8mm, skin thickness medium, texture smooth, adherence<br />

to flesh strong, tendency to crack absent, colour very dark<br />

54<br />

red (4.2RL.2/4.8) with strong orange yellow<br />

(9.1YR7.1/11.6) freckling toward the apex, with vivid<br />

purplish green (7.3G8.8/1.9) stem markings typical on<br />

some fruit. Flesh: colour greenish white (10.0G9.2/0.8)<br />

from skin to stone, with no bleeding and very slight<br />

moderate red (3.8r4.4/9.1) streaking next to the stone,<br />

surface of pit cavity covered with moderate red (3.8r4.4/9.1)<br />

fibres, amygdalin wanting, juice moderate, rich texture,<br />

extremely firm and crisp, fibres abundant, fine, ripens<br />

evenly, slightly earlier at apex and lips, flavour mild subacidic<br />

and sweet, with 16 to18 brix, aroma moderate. Stone:<br />

type freestone, shape oval, base somewhat oblique, apex<br />

acute, sides equal, surface horizontally furrowed toward the<br />

apex and some pitting toward the base, ridges jagged toward<br />

the base, colour light brown (5.4YR5.4/4.8) through the<br />

wall when first removed and cracked, tendency to split<br />

absent. Kernel: shape oval, taste bitter, viable, average<br />

width 12.7mm, average length 17.5mm, skin colour pale<br />

yellow (4.7y9.0/3.8) when first removed, pellicle colour<br />

moderate yellowish brown (9.5yr4.4/3.9), amygdalin<br />

abundant. Maturity: hard ripe 20 Dec, date of first picking<br />

22 Dec, date of last picking 1 Jan on trial trees at<br />

Buchanan’s Nursery, Tenterfield, NSW. (Note: all colour<br />

designations are ISCC-NBS colour codes and Munsell<br />

renotations.)<br />

Origin and Breeding Controlled pollination: F 1 between<br />

seed parent ‘Spring Bright’ and an unnamed pollen parent<br />

in a planned breeding program in Le Grand, California,<br />

USA. The candidate variety is similar to its seed parent,<br />

‘Spring Bright’ (U.S. Plant Pat. No. 7,507) by producing<br />

very firm, full red nectarines, but is very distinguished<br />

therefrom by producing fruit that is white flesh instead of<br />

yellow flesh, that is freestone instead of clingstone, and that<br />

is sub-acidic in flavour instead of acidic. Selection criteria:<br />

firmness, sub-acidic, white flesh. Propagation: by budding<br />

and grafting. After each propagation the variety has been<br />

true to type and stable. Breeder: Lowell G Bradford and<br />

Norman G Bradford, Le Grand, California, USA.<br />

Choice of Comparators The two comparators that have<br />

been selected are ‘Spring Bright’ (U.S. Plant Patent 7,507)<br />

and ‘Ruby Diamond’ (U.S. Plant Patent 7,918) on the basis<br />

that the candidate has intermediate maturity between the<br />

comparators. However, the major difference between the<br />

varieties is the new variety is white fleshed and the<br />

comparators are both yellow fleshed. The seed parent was<br />

excluded because it is a clingstone nectarine.<br />

Comparative Trial The description is based on overseas<br />

data gathered from U.S. Plant Patent 10,871. The<br />

characteristics were verified under <strong>Australia</strong>n conditions.<br />

The trial trees are planted at Buchanan’s Nursery<br />

Tenterfield, NSW. They have been observed for the past two<br />

years. From all of the observations the variety is performing<br />

the same in <strong>Australia</strong> as it does in the USA. It has proven to<br />

be distinct, uniform and stable through several propagation<br />

cycles.<br />

Prior Applications and Sales<br />

Country Year Current Status Name Applied<br />

USA 1997 Granted ‘Kay Pearl’<br />

Chile 1999 Granted ‘Kay Pearl’<br />

First Sold in the USA in Dec 1997.<br />

Description: Peter Buchanan, Buchanan’s Nursery, Tenterfield, NSW.

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