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Nectarine tree, `Burnectnineteen`
PP17140 Nectarine tree, `Burnectnineteen`
Patent Drawings:Drawing: PP17140-5    
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Inventor: Slaughter, et al.
Date Issued: October 10, 2006
Application: 11/014,031
Filed: December 16, 2004
Inventors: Slaughter; John K. (Fresno, CA)
Gerdts; Timothy J. (Kingsburg, CA)
Assignee: The Burchell Nursery, Inc. (Oakdale, CA)
Primary Examiner: Bell; Kent
Assistant Examiner: Haas; W. C
Attorney Or Agent: Wells St. John P.S.
U.S. Class: PLT/190
Field Of Search: PLT/190
International Class: A01H 5/00
U.S Patent Documents: PP5245
Foreign Patent Documents:
Other References:









Abstract: A new and distinct variety of nectarine tree Prunus nucipersica, and which is denominated varietally as `Burnectnineteen`, and which produces an attractively colored yellow-fleshed, clingstone nectarine which is mature for harvesting approximately May 12th to May 18 under ecological conditions prevailing in the San Joaquin Valley of central California.
Claim: Having thus described and illustrated our new variety nectarine tree, what we claim is new and desire to secure by Plant Letters Patent is:

1. A new distinct variety of nectarine treesubstantially as illustrated and described, and which is characterized principally as to novelty by producing an attractively colored yellow-fleshed, clingstone nectarine which is mature for harvesting approximately May 12 to May 18 under the ecologicalconditions prevailing in the San Joaquin Valley of central California.
Description: Botanical designation: Prunus persica.

Variety denomination: `Burnectnineteen`.

BACKGROUND OF THE NEW VARIETY

The present invention relates to a new, novel and distinct variety of nectarine tree, Prunus persica, which has been denominated varietally as `Burnectnineteen` hereinafter.

The present variety of nectarine tree resulted from an on-going program of fruit and nut tree breeding. The purpose of this program is to improve the commercial quality of deciduous fruit and nut varieties, and rootstocks, by creating andreleasing promising selections of prunus, malus and regia species. To this end we make both controlled and hybrid cross pollinations each year in order to produce seedling populations from which improved progenies are evaluated and selected.

The seedling `Burnectnineteen` was originated by us from a population of seedlings grown in our experimental orchards located near Fowler, Calif. The seedlings, grown on their own roots, were the result of a controlled cross of an unnamedyellow-fleshed clingstone peach tree (nonpatented), which as used as the pollen parent; and `Crimson Baby` (un-patented, USDA, Fresno), an early ripening, yellow-fleshed, nectarine tree, which was used as the seed parent. This cross was made in February1999. Thereafter seeds from this cross were planted in the autumn of 1999. One seedling, denoted as J1.016, which is the present variety, exhibited especially desirable characteristics and was marked for subsequent observation. After the 2001 fruitingseason, the new variety of nectarine tree was selected for advanced evaluation and repropagation.

ASEXUAL REPRODUCTION

Asexual reproduction of this new and distinct variety of nectarine tree was accomplished by budding the new nectarine tree to `Nemaguard` Rootstock (unpatented). This was performed by us in our experimental orchard located near Fowler, Calif. Subsequent evaluations have shown those asexual reproductions run true to the original tree. All characteristics of the original tree, and its fruit, were established and appear to be transmitted through succeeding asexual propagations.

SUMMARY OF THE VARIETY

`Burnectnineteen` is a new and distinct variety of nectarine tree, which is considered of large size, and which has vigorous growth. This new nectarine tree is also a regular and productive bearer of relatively large, firm, yellow fleshed,clingstone fruit which have good flavor and eating qualities. This new tree has a medium/low chilling requirement of approximately 450 hours, and further produces relatively uniformly sized fruit throughout the tree. In addition, the fruit also appearsto have good handling and shipping qualities. Still further, the `Burnectnineteen` nectarine tree bears fruit which are ripe for commercial harvesting and shipment on approximately May 12 to May 18 under the ecological conditions prevailing in the SanJoaquin Valley of central California. In relative comparison to the seed parent, `Crimson Baby`, the present nectarine tree bears fruit about 5 or more days earlier at the same geographical location. Further, the present new variety of nectarine treeexhibits a more brilliant skin finish then that of the seed parent. In relative comparison to other known varieties, the present variety of nectarine tree is most closely similar to the `May Glo` Nectarine (U.S. Plant Pat. No. 5,245), which, whengrown in its natural state, produces fruit with a relatively high percentage of split pits, whereas the present new variety produces fruit which has a significantly lower incidence of split pits.

BRIEF DESCRIPTION OF THE DRAWING

The accompanying drawing, is a color photograph of the new present variety. The photograph depicts two whole mature fruit, and one fruit dissected substantially in the equatorial plane, and which reveals the flesh and the stone characteristicsthereof. The external coloration of the fruit, as shown, is sufficiently matured for harvesting and shipment. Additionally, the photograph displays a sample vegetative shoot bearing typical leaves, and a typical stone, with the flesh removed. Thecolors in this photograph are as nearly true as is reasonably possible in a color representation of this type. Due to chemical development, processing and printing, the leaves and fruit depicted in these photographs may or may not be accurate whencompared to the actual specimen. For this reason, future color references should be made to the color plates (Royal Horticultural Society) and other more general color descriptions provided hereinafter.

DETAILED DESCRIPTION

Referring more specifically to the pomological details of this new and distinct variety of nectarine tree, the following has been observed during the fourth fruiting season under the ecological conditions prevailing at orchards which are locatednear the town of Fowler, county of Fresno, state of California. All major color code designations are by reference to The R.H.S. Colour Chart (Fourth Edition) and which is provided by The Royal Horticultural Society of Great Britain. Common colornames are also occasionally used. Tree: Size.--Generally. -- Considered medium-large as compared to other common commercial nectarine cultivars ripening in the early season of maturity. The tree of the present variety was pruned to a height ofapproximately 310.0 cm to about 330.0 cm at maturity. Vigor.--Considered moderately vigorous. The present nectarine tree variety grew from about 140.0 cm to about 145.0 cm in height during the first growing season. The new variety was pruned to aheight of approximately 125.0 cm during the first dormant season, and primary scaffolds were then selected for the desired tree structure. Productivity.--Productive. Fruit set varies from about 1.5 to several times more than the desired crop load. Fruit set is spaced by thinning to develop the remaining fruit into the desired market sized fruit. The number of the fruit set varies with the prevailing climatic conditions, and cultural practices employed during the bloom period, and is therefore notdistinctive of the present variety. Bearer.--Regular. Fruit set has been heavy during the years of observation and thinning was necessary during the past 4 years. Form.--Upright, and pruned to a vase shape. Density.--Considered medium dense. It hasbeen discovered that pruning the branches from the center of the tree to obtain a resulting vase shape allows for air movement and appropriate amounts of sunlight to enhance fruit color and renewal of fruiting wood throughout the tree. Hardiness.--Thepresent tree was grown and evaluated in USDA Hardiness Zone 9. Winter chilling requirements of the new tree are approximately 450 hours below 7.0 degrees C. The variety appears to be hardy under typical central San Joaquin Valley climatic conditions. Trunk: Diameter.--Approximately 14.1 cm in diameter when measured at a distance of approximately 15.24 cm above the soil level. The measurement was taken at the end of the fourth growing season. Bark texture.--Considered moderately rough, with numerousfolds of papery scarfskin being present. Lenticels.--Numerous flat, oval lenticels are present. The lenticels are relatively large, and range in size from approximately 6.0 to about 9.0 millimeters in width, and from 1.0 to about 2.0 millimeters inheight. Lenticel color.--Orange brown, (RHS Greyed-Orange Group 168 B). Bark coloration.--Variable, but it is generally medium grey-brown, (RHS Greyed-Red Group 178 A). Branches: Size.--Considered medium for the variety. Diameter.--Average ascompared to other nectarine varieties. The branches have a diameter of about 7.0 centimeters when measured during the third year after grafting. Surface texture.--Average, and appearing furrowed on wood which is several years old. Crotchangles.--Primary branches are considered variable; and are between about 46 to 50 degrees when measured from the horizontal axis. This particular characteristic is not considered distinctive of the variety, however. Current season shoots.--Surfacetexture -- Substantially glabrous. Internode length.--Approximately 2.2 to about 2.3 cm. Color of mature branches.--Medium brown, (RHS Greyed-Orange 177 D). Current seasons shoots.--Color. -- Light green, (RHS Green Group 137 D). The color of newshoot tips is a bright and shiny green (RHS Green Group 141D). Leaves: Size.--Considered medium to large for the species. Leaf measurements have been taken from vigorous, upright, current-season growth at approximately mid-shoot. Leaflength.--Approximately 145.0 to about 175.0 millimeters. Leaf width.--Approximately 39.0 to about 45.0 millimeters. Leaf base shape.--Slightly oblique relative to the leaf longitudinal axis. Leaf form.--Lancelolate. Leaf tip form.--Acuminate. Leafcolor.--Upper Leaf Surface -- Dark green, (approximately RHS Yellow-Green Group 147 A). Leaf texture.--Glabrous. Leaf color.--Lower Surface -- Medium green, (RHS Yellow-Green Group 147 B). Leaf venation.--Pinnately veined. Mid-vein.--Color. -- Lightyellow green, (RHS Yellow-Green Group 151 A). Leaf margins.--Slightly undulating. Form. -- Considered crenate. Uniformity. -- Considered generally uniform. Leaf petioles.--Size. -- Considered medium. Length. -- About 7.0 to about 10.0 mm. Diameter. -- About 1.5 to about 2.0 mm. Color. -- Pale green, (RHS Yellow-Green Group 144 A). Leaf glands.--Size. -- Considered medium small. Approximately 1.5 mm in length, and about 1.0 mm in height. Number. -- Generally one gland per marginside. Occasionally two glands per margin side. Type. -- Reniform. Color. -- Pale orange (RHS Orange-Red Group 30 D). Leaf stipules.--Size. -- Medium large for the variety. Number. -- Typically 2 per leaf bud and up to 6 per shoot tip. Form. --Lanceolate in form and having a serrated margin. Color. -- Green, (RHS Yellow-Green Group 143 C) when young, but graduating to a brown color, (RHS Greyed-Orange group 166 B) with advancing senescence. The stipules are considered to be early deciduous. Flowers: Flower buds.--Generally -- The floral buds, depending upon the stage of development, are approximately 8.0 millimeters wide; about 12.0 millimeters long; conic in form; and slightly appressed relative to the bearing shoot. Floral bud dimensionsare highly dependent upon the relative timing of the measurements. Flower buds.--Color -- This characteristic is dependent upon the proximity to bloom. The bud scales are typically considered to be a deep purple, (approximately RHS Greyed-Purple GroupN187 A). The buds are considered hardy under typical central San Joaquin Valley climatic conditions. Hardiness.--No winter injury has been noted during the last several years of evaluation in the central San Joaquin Valley. The current variety has notbeen intentionally subjected to drought or heat stress, and therefore this information is not available. Date of first bloom.--Feb. 23, 2004. Blooming time.--Considered early-mid season in relative comparison to other commercial nectarine cultivarsgrown in the central San Joaquin Valley. The date of full bloom was observed on Feb. 28, 2004. The date of bloom varies slightly with climatic conditions and cultural practices. Duration of bloom.--Approximately 9 days. This characteristic variesslightly with the prevailing climatic conditions. Flower type.--The variety is considered to have a showy type flower. Flower size.--Flower diameter at full bloom is approximately 43.0 to about 49.0 millimeters. Bloom quantity.--Considered abundant. Flower bud frequency.--Normally 2 or more flower buds appear per node. Petal size.--Generally -- Considered large for the species. Length. -- Approximately 20.0 to about 22.0 millimeters. Width. -- Approximately 21.0 to about 23.0 millimeters. Petal form.--Considered rounded. Petal count.--Nearly always 5. Petal texture.--Glabrous. Petal Color. -- Light pink, (RHS Red-Purple Group 62 C to a medium pink, (RHS Red-Purple Group 58 D). Fragrance.--Slight. Petal claw.--Form. -- The claw isconsidered generally rounded and has a medium size when compared to other varieties. Length. -- Approximately 9.0 to about 12.0 millimeters. Width. -- Approximately 8.0 to about 11.0 millimeters. Petal Margins. -- Generally considered reasonablyuniform and smooth and moderately undulate. Petal apex.--Generally -- The petal apices are generally entire at the tip. Flower pedicel.--Length. -- Considered medium-long, and having an average length of approximately 5.0 to about 7.0 millimeters. Diameter. -- Considered average, approximately 2.0 millimeters. Color. -- A medium brown, (RHS Greyed-Orange Group 166 B). Floral nectaries.--Color. -- A dull orange, (RHS Greyed-Orange Group 167 A). Calyx.--Surface Texture. -- Generally glabrous. Color. -- Purple, (approximately RHS Greyed-Purple Group 183 D). Sepals.--Surface Texture. -- The surface has a short, fine pubescent texture. Size. -- Average, and ovate in form. Color. -- A deep purple, (approximately RHS Greyed-Purple GroupN187 B). Anthers.--Generally. -- Average in length. Color. -- Red to reddish-orange dorsally, (approximately RHS Greyed-Red Group 179 A). Pollen Production. -- Pollen is abundant, and has a yellow color, (approximately RHS Yellow-Orange Group 17C). The present variety is considered self-fruitful and does not require a pollinator. Filaments.--Size. -- Length is variable, approximately 16.0 to about 19.0 millimeters long. Color. -- Light pink, (RHS Red-Purple Group 65 B). Pistil.--Number. -- Usually 1, rarely 2. Generally. -- Average in size. Length. -- Approximately 19.0 to about 21.0 millimeters including the ovary. Color. -- Pale green, (approximately RHS Yellow-Green Group 145 B). Surface Texture. -- The variety has a longglabrous pistil. Fruit: Maturity when described.--Firm ripe condition (shipping ripe). Date of first picking. -- May 12th, 2004. Date of last picking. -- May 20, 2004. The date of harvest varies slightly with the prevailing climatic conditions. Size. --Generally -- Considered large, and uniform. Average cheek diameter.--Approximately 69.0 to about 73.0 millimeters. Average axial diameter.--Approximately 68.0 to about 74.0 millimeters. Typical weight.--Approximately 257.0 grams. Thischaracteristic is highly dependent upon the prevailing cultural practices, and therefore is not particularly distinctive of the variety. Fruit form.--Generally -- Considered rounded. The fruit is generally uniform in symmetry. Fruitsuture.--Appearance -- Very shallow and smooth, and which further extends from the stem attachment and towards the base but appears absent throughout the suture plane. No apparent callousing or stitching exists along the suture line. Suture.--Color --This has a yellow background color, (approximately RHS Yellow-Orange Group 20 A). Ventral surface.--Form -- Slightly indented. Apex.--Rounded. Base.--Generally retuse. Stem cavity.--Slightly elongated in the suture plane. Average depth of the stemcavity is about 7.0 mm. Average width of the stem cavity is about 11.0 mm. Fruit skin.--Thickness. -- Considered medium in thickness, and tenacious to the flesh. Texture. -- Glabrous. Taste. -- Non-astringent. Tendency to crack. -- Noneobserved. Color.--Blush Color. -- This blush color is generally red (approximately RHS Red Group 53 A). The blush covers approximately 85-95% of the fruit skin surface. The percentage of the blush on the fruit skin surface can vary, and is generallydependent upon the prevailing conditions under which the fruit was grown. Ground Color. -- Yellow orange, (approximately RHS Yellow-Orange Group 20 A). Fruit stem.--Medium long, approximately 6.0 to about 9.0 millimeters. Diameter. -- Approximately2.0 millimeters. Color. -- Pale yellow-green, (approximately RHS Yellow-Green Group 144 B). Flesh.--Ripens. -- Evenly. Texture. -- Firm, juicy and dense. The flesh is considered firm-melting. Fibers. -- Few, small, and tender ones are typicallyfound. Aroma. -- Very slight. Eating Quality. -- Considered very good. Flavor. -- Considered sweet and mildly acidic. The flavor is considered both pleasant and balanced. Juice. -- Moderate. Brix. -- About 15.5 degrees. This characteristicvaries slightly with the number of fruit per tree; prevailing cultural practices; and the surrounding climatic conditions. Flesh Color. -- Pale yellow-orange, (approximately RHS Yellow Group 11 C). Stone: Type.--Clingstone. Size.--Considered mediumfor the variety. The stone size varies significantly depending upon the tree vigor, crop load and prevailing growing conditions. Length.--Average, about 26.0 to about 30.0 millimeters. Width.--Average, about 23.0 to about 26.0 millimeters. Diameter.--Average, about 14.0 to about 16.0 millimeters. Form.--Generally ovoid. Base.--The stone is usually ovoid basally. Apex.--Shape. -- The stone apex has a prominent tip. Stone surface.--Surface Texture -- The pit is irregularly furrowedtoward the ventral and dorsal sides. Pitting is generally more present and noted on the lateral sides. Ridges. -- The surface texture is generally characterized by more prominent ridges along the ventral edges and dorsal margins. Ventral Edge. --Width -- Considered medium, and having a dimension of approximately 3.0 to about 4.0 millimeters when measured at the mid-suture. Dorsal Edge. -- Shape. -- Oblique toward the stem end, and exhibiting significant reduction of margin toward the apex. Stone color.--The color of the dry stone is generally considered a reddish brown, (approximately Orange-White Group RHS 159 C). Tendency to split.--Splitting has rarely been noted. Kernel.--Size. -- The kernel is considered medium-large. Form. --Considered generally ovoid but is frequently under developed toward the basal margins. Pellicle. -- Pubescent. Color. -- (RHS Greyed-Orange Group 168 D).

Additionally, the kernel is generally considered to be immature when compared to the kernels of mid-late season varieties. Use.--The subject variety `Burnectnineteen` is considered to be a nectarine tree of the early season of maturity, andwhich produces fruit that are considered firm, attractively colored, and which are useful for both local and long distance shipping. Keeping quality.--Excellent. Fruit has stored well up to 25 days after harvest at 1.0 degree Celsius. Shippingquality.--Considered good. The fruit of the new nectarine variety showed minimal bruising of the flesh or skin damage after being subjected to normal harvesting and packing procedures. Resistance to insects and disease.--No particular susceptibilitieswere noted. The present variety has not been tested to expose or detect any susceptibilities or resistances to any known plant and/or fruit diseases.

Although the new variety of nectarine tree possesses the described characteristics when grown under the ecological conditions prevailing near Fowler, Calif., in the central part of the San Joaquin Valley of California, it should be understoodthat variations of the usual magnitude and characteristics incident to changes in growing conditions, fertilization, pruning, pest control and horticultural management are to be expected.

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