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47. Volume 14- Number 2 - IP Australia

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later. The candidate variety is similar to ‘August Red’ (U.S.<br />

Plant Patent 6,363), the other pollen grandparent, by<br />

producing yellow flesh clingstone nectarines that are large<br />

and very firm in texture, but is easily distinguished<br />

therefrom by producing fruit that is sub-acidic in flavour<br />

instead of acidic, that is much sweeter, and that ripens about<br />

20 days earlier. Selection criteria: sub-acidic flavour and<br />

firmness. Propagation: by budding and grafting. After each<br />

propagation the variety has been true to type and stable.<br />

Breeder: Lowell G Bradford and Norman G Bradford, Le<br />

Grand, California, USA.<br />

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

been selected are ‘Red Glen’ (U.S. Plant Patent 7,193) and<br />

‘Summer Fire’ (U.S. Plant Patent 7,506) on the basis that<br />

the candidate has intermediate maturity between the<br />

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

varieties is the new variety is sub-acidic and the<br />

comparators are both acidic in flavour. The parents were<br />

excluded for reasons stated above.<br />

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

data gathered from U. S. Plant Patent 9,961. 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 1996 Granted ‘Fire Sweet’<br />

Chile 1998 Granted ‘Fire Sweet’<br />

South Africa 1998 Applied ‘Fire Sweet’<br />

First Sold in the USA in Dec 1996.<br />

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

‘August Pearl’ syn August Ice<br />

Application No: 2000/268 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 29) Tree: size large, vigour strong,<br />

growth habit upright and dense, very productive, thinning<br />

necessary, self-fertile, regular bearing. Trunk: size medium,<br />

texture medium to rough, bark colour greyish yellowish<br />

brown (9.5YR4.6/2.1); lenticels numerous, colour moderate<br />

orange yellow (8.7YR7.2/8.3), average size: 3.2-9.5mm.<br />

Branches: size medium, texture smooth on 1st year wood,<br />

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

topside greyish red (4.0R4.4/4.8) when exposed to sunlight,<br />

1st year wood underside moderate yellow green<br />

(4.8GY6.0/5.0), older wood moderate brown<br />

(5.6YR3.5/3.9); lenticels numerous, small, colour deep<br />

orange yellow (8.6YR6.0/12.1), average size 1.6mm. Leaf<br />

blade: size medium, average length <strong>14</strong>6.1mm, 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 />

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

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

pinnately net veined. Petiole: average length 12.7mm,<br />

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

(4.8GY6.0/5.0). Stipules: numerous, average length 9.5mm.<br />

Nectaries: 4-6 per leaf, alternately positioned on petiole and<br />

base of blade, size small, shape globose, colour moderate<br />

greenish yellow (9.5Y7.1/6.5). Flower bud: size medium,<br />

length 19.1mm 1 week before bloom, form free, surface<br />

pubescent. Flower: blooming period medium, colour pale<br />

purplish pink (3.7RP8.4/3.3). Fruit: size uniform, large,<br />

average diameter axially 66.7mm, average transversely in<br />

suture plane 66.7mm, shape globose, uniform, mostly<br />

symmetrical, inconspicuous suture line transforms into a<br />

sharp groove very close to the stem and a shallow groove<br />

toward the apex, having a slight depression beyond the pistil<br />

point. Stalk cavity: flaring, circular, suture showing on one<br />

side with stem marks typical, depth 15.9mm, breadth<br />

25.4mm, base rounded to truncate, apex rounded, pistil<br />

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

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

4.8mm. Skin: thickness medium, texture medium,<br />

adherence to flesh strong, tendency to crack none, colour<br />

dark red (4.0R2.8/6.8) over a moderate pink (2.8R7.2/5.3)<br />

background with a slight amount of light orange<br />

(4.8YR7.8/7.2) freckling toward the apex. Flesh: colour<br />

yellowish white (4.5Y9.2/1.2) with dark red (4.0R2.8/6.8)<br />

streaking extending about 9.5mm from the stone,<br />

amygdalin scarce, juice abundant, rich; texture extremely<br />

firm, crisp, fibres abundant, fine; ripens slightly earlier at<br />

apex and lips, flavour sub-acidic and sweet, averaging 18<br />

brix, aroma slight. Stone: type clingstone, form oval, base<br />

straight, apex acute, sides equal, surface horizontally<br />

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

ridges jagged toward the base, colour moderate yellowish<br />

brown (9.5YR4.4/3.9), tendency to split absent. Kernel:<br />

shape oval, taste sweet, viable, average width 12.7mm,<br />

average length 17.5mm, skin colour strong brown<br />

(8.8YR2.5/1.6) when dry, pellicle colour moderate<br />

yellowish brown (9.5YR4.4/3.9), amygdalin scant.<br />

Maturity: hard ripe 30 Jan, date of first picking 3 Feb, date<br />

of last picking 15 Feb on trial trees at Buchanan’s Nursery,<br />

Tenterfield, NSW. (Note: all colour designations are ISCC-<br />

NBS colour codes and Munsell renotations.)<br />

Origin and Breeding Controlled pollination: F1 between<br />

seed parent ‘Red Glen’ and pollen parent ‘August Snow’ in<br />

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

The seed parent ‘Red Glen’ (U.S. Plant Patent 7,193) is<br />

distinguished by its yellow flesh colour and acidic flavour.<br />

The pollen parent ‘August Snow’ (U.S. Plant Patent 8947)<br />

is distinguished by its freestone. Selection criteria: white<br />

flesh, sub-acidic flavour, firmness and size of fruits.<br />

Propagation: by budding and grafting. After each<br />

propagation the variety has been true to type and stable.<br />

Breeder: Lowell G Bradford and Norman G Bradford, Le<br />

Grand, California, USA.<br />

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

been selected are ‘Red Glen’ (U.S. Plant Patent 7,193) and<br />

‘August Red’ (U.S. Plant Patent 6,363) on the basis that the<br />

candidate has intermediate maturity between the<br />

comparators. ‘Red Glen’ is also the seed parent of the<br />

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

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

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

53<br />

DESCR<strong>IP</strong>TIONS

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