USPP3057P - guengerich - Google Patents

Description

Aug. 10, 1971 H. w. GUENGERICH Plant Pat. 3,057

APPLE TREE File'd Aug. 15, 1969 United States Patent 01 Ffice Plant Pat. 3,057 Patented Aug. 10, 1971 Int. Cl. A0111 /03 US. Cl. Plt.34 1 Claim The present invention relates to a new and distinct variety of apple tree which was discovered by me in a test orchard owned by my assignee and located near Louisiana, in Pike County, Mo., said new variety having originated as an open-pollinated seeedling of the variety of apple tree known as Clark Dwarf (unpatented).

My new discovery was the result of a research program conducted by my assignee under my direction, and which had for its primary objective the development of a new and improved variety of apple tree which would be useful as dwarfing interstock for producing dwarf apple trees having improved characteristics as compared with those produced by an unnamed and unpatented dwarfing interstock known as EM VIII which heretofore has been widely used by my assignee, but is susceptible to stem pitting virus. This objective was fully achieved, as evidenced by the fact that although, as a tree, if resembles EM VIII in size, vigor and form, and produces dwarf trees similar to those produced by EM VIII when used as dwarfing interstock, the new variety is more tolerant to stem-pitting virus than the variety EM VIII. In addition, dwarf trees produced by the use of my new variety as a dwarfing interstock, are only about half the size of standard trees grown to maturity on the usual seedling rootstock, but are caused to bear at an early age and heavily. All of these attributes are commercially valuable.

As exual reproduction of my new variety of layering, as performed by me in Pike County, Mo., shows that the foregoing characteristics and distinctions come true and are established and transmitted through succeeding propagations.

The accompanying drawing shows a typical bare tree of my new variety, as well as typical specimens of its foliage and fruit, with one of the fruit specimens being shown in longitudinal cross-section, and all as depicted in color as nearly true as it is reasonably possible to make the same in a color illustration of this character.

The following is a detailed description of my new variety, with color terminology in accordance with Ridgways Color Standards and Nomenclature, hereinafter abbreviated as R, and Horticultural Colour Guide, hereinafter abbreviated as HCG, except where general color terms of ordinary dictionary significance are obvious:

Location Where grown and observed: Pike County, Mo.

Dates of first and last pic-kings: About August 1 and August 15, respectively.

Tree: Small; medium vigorous; spreading; low; open; vaseformed; slow growing; hardy; very productive; regular bearer.

Trunk.-Stocky; shaggy.

Branches.Mediurn slender. Color (shoots)-Diamine Brown, Plate XIII (Color No. 3', toner m (R).

Lenticles.Numerous; medium small.

Leaves.-Medium large; wide; medium length; ovate; abruptly pointed; thick, smooth. LengthFrom 3 inches to 3 /2 inches. Width-From 2 inches to 2%; inches. Color-Spinach Green, Plate 0960', page .187, volume II, (HCG). Margin-Coarsely serrate. PetioleMedium length (from inch to A; inch); medium thickness. Flowers: Medium early; medium large.

Dates of first and full bl00m.--About April 19 and April 27, respectively. C0l0r.-White, with pink tinge near margins of some petals. Fruit:

M;t)urity when described-Hard ripe (about August Size.Variable. Axial diameterabout 2% inches. Transverse diameterFrom about 2% inches to 2% inches.

Form.Globose-oblate; ribbed.

Cavity.Unsymmetrical; apex acute; furrowed; lipped toward apex. Depth-Shallow (from about A inch to A; inch). Breadth-About inch. MarkingsNone.

Basin.Unsymmetrical; flaring; .furrowed; glabrous. DepthFrom about inch to inch. Breadth about A inch. Markings--None.

Srem.C1ubbed; stout; short. Length From about inch to inch. Breadth-About /8 inch. MarkingsNone.

Calyx.-Closed; segments persistent; broadly lanceolate; about inch long; approximate at base; reflexed from base at apex; converged from base toward center; pubescent on both inner and outer surfaces.

Skin.--Thick; tough; smooth; glossy; waxed. Dots- Obscure; many; small; depressed; circular. Color- White. Distribution-over entire surface. Ground color-Sap Green, Plate 62/2, page 62, volume I (HCG). Color markingsblushed. Color-Carmine, Plate 21/1, page 21, volume I (HCG). Bloom-Wanting. Scarfskin--Wanting. General color effectBright Red, with yellowish-green ground color.

F lesh.Rather dry. Color-White, with greenish tint. Texture-Firm; tough; fine; crisp. Flavor-Austere. AromaWanting. Quality-Inferior.

C0re.--Distant. Bundle area-Medium large; cordate; symmetrical. Halves of core-Equal. Bundles-Conspicuous; in one whorl. ColorGreen. Core linesClasping. Cross-section-Indistinct. Carpellary areaIndistinct; large. Calyx tube- Glabrous toward base; apex cone-shaped. Entire depth A inch.

Styles.Present; united toward base; pubescent throughout.

Stamens.-ln one basal whorl.

Seed cells.--AXile; closed. Cell wallsDistant; thin, tough. LengthAbout inch. Breadth--About /8 inch. Longitudinal section-Broadly oval; obtuse at apex. SurfaceEntire; smooth. Cross section-Broad.

Seeds:

Average number.-5 or 6 perfect and 3 imperfect;

2 per cell.

Length.About 7 inch.

Breadth.About inch.

Color.--Argus Brown, Color No. 13, tone m R).

Use: Fruit worthless, but woody stems useful as good dwarfing interstock.

Disease resistance: Bood tolerance to stem-pitting virus, as determined by comparison with other varieties grown under comparable conditions in Pike County, Mo.

I claim:

1. A new and distinct variety of apple tree, substantially as herein shown and described, characterized particularly as to novelty by its general resemblance in size, vigor and form to the unnamed and unpatented variety 4 identified as EM VIII formerly used extensively as dwarfing interstock, but having a greater tolerance to stem-pitting virue than EM VIII, said new variety also having superior utility as dwarfing interstock to produce dwarf apple trees about half the size of standard trees grown on seedling rootstock, but which bear earlier and heavily.

No references cited.

10 ROBERT E. BAGWILL, Primary Examiner

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