Apricot tree named 'NJA151'

Abstract

A new and distinct apricot variety of Prunus persica named ‘NJA151’ is provided. This variety is distinguished from other apricot varieties by its unique combination of showy flowers, fruit that ripen in early season, attractive fruit with a dark orange ground color, freestone fruit with a moderately juicy, fine, melting texture and moderately acidic flavor, and good production of fruit.

Description

CROSS REFERENCE TO RELATED APLICATIONS

NONE

STATEMENT REGARDING FEDERALLY SPONSORED RESEARCH OR DEVELOPMENT

NONE

LATIN NAME OF GENUS AND SPECIES OF THE PLANT CLAIMED

Prunus armeniaca L.

BACKGROUND OF THE INVENTION

The present invention relates to a new and distinct variety of apricot tree named ‘NJA151’. Our new tree resulted from crossing ‘Harcot’ as the seed parent with ‘NJA32’ apricot tree, as the pollen parent. The new variety differs from seed parent ‘Harcot’ (unpatented) in that the new variety produces fruit with a dark orange ground color in late June, while the seed parent produces fruit with orange ground color in early July. The new variety differs from pollen parent ‘NJA32’ (unpatented in U.S.) in that the new variety is more productive, while the pollen parent has cropped inconsistently. The resulting tree was selected when growing in a cultivated area as the 107^st tree in the 21^th row of Block J at the Rutgers Fruit Research and Extension Center in Cream Ridge, N.J.

BRIEF SUMMARY OF THE INVENTION

The ‘NJA151’ variety is distinguished from other apricot varieties due to the following unique combination of characteristics:

• • Attractive round fruit that are only slightly compressed.
  • Fruit with an attractive dark orange ground color.
  • Good production of fruit that ripen in early-season.
  • Fruit have above average eating quality with an average of 17% soluble solids.

The variety was asexually reproduced at the Rutgers Fruit Research and Extension Center in Cream Ridge, N.J. Asexual reproduction of this new variety by budding onto ‘Lovell’ peach rootstock (unpatented) shows that the foregoing characteristics are ‘so reproduced.

The following detailed description concerns the original tree, ‘NJA151’. The original tree and asexual progeny have been observed growing in a cultivated area at the Rutgers Fruit Research and Extension Center in Cream Ridge, N.J. Certain characteristics of this variety, such as growth and color, may change with changing environmental conditions (such as, light, temperature, moisture, nutrient availability) or other factors. Color descriptions and other terminology are used in accordance with their ordinary dictionary descriptions, unless the context clearly indicates otherwise. Color designations are made with reference to The Royal Horticultural Society (R.H.S.) Colour Chart.

BRIEF DESCRIPTION OF THE DRAWINGS

This new variety is illustrated by the accompanying photographic drawings, depicting the apricot tree by the best possible color representation using color photography. The colors of and illustration of this type may vary with lighting and other conditions under which conditions and, therefore, color characteristics of this new variety should be determined with reference to the observations described herein, rather than from these illustrations alone.

FIG. 1 is a color photograph taken on Oct. 14, 2011 of a characteristic twig of ‘NJA151’ in late summer bearing typical leaves of the mature and immature foliage.

FIG. 2 is a color photograph taken on Jun. 19, 2012 of characteristic mature fruit, stones and fresh kernels of ‘NJA151’. Whole fruit are presented in four positions and transverse and longitudinal sections to illustrate the orange flesh color and pericarp that does not adhere to the stone.

FIG. 3 is a color photograph of a tree of ‘NJA151’ in early fall that illustrates the spreading to slightly upright growth habit of a tree at Rutgers Fruit Research and Extension Center in Cream Ridge, N.J. on Oct. 14, 2011.

FIG. 4 is a color photograph taken on Dec. 22, 2011 of immature bark of ‘NJA151’ that illustrates color and the low density of elliptical greyed-white lenticels on the immature bark.

FIG. 5 is a color photograph taken on Dec. 22, 2011 of mature bark of ‘NJA151’ that illustrates the moderately rough texture of the mature bark.

FIG. 6 is a color photograph taken on Mar. 20, 2012 of a characteristic twig of ‘NJA151’ that illustrates the typical flower buds and showy flowers of ‘NJA151’.

DETAILED BOTANICAL DESCRIPTION

The following detailed description of the ‘NJA151’ variety is based on observations of a budded tree. The observed tree was five years of age and growing on ‘Lovell’ peach rootstock in Research Block C at the Rutgers Fruit Research and Extension Center in Cream Ridge, N.J.

• Scientific name: Prunus persica L.
• Parentage:

Seed parent:   Harcot.
Pollen parent: NJA32.

• Tree:

Vigor:                Vigorous.
Plant hardiness zone: Growth of plants has only been observed in zone
                      6b.
Dormant flower bud    At least to −20° C.
cold tolerance:
Overall shape:        Spreading to slightly upright.
Height:               Above average as compared to other apricot
                      cultivars. For example, measurement of a typical
                      tree at five years after planting shows an average
                      height of 4 meters when grown in Cream Ridge,
                      New Jersey.
Width:                Average as compared to other apricot cultivars.
                      For example, measurement of a typical tree at five
                      years after planting shows an average width of 4
                      meters when grown in Cream Ridge, New Jersey.
Caliper:              Five year old tree is 39 cm in circumference
                      measured at 15 cm from the ground.

• Trunk and branches:

Trunk bark texture: Moderately rough.
Trunk bark color:   Greyed-green (between RHS 197a and RHS 197b).
Primary branches:   Branches that are approximately 15 cm in
                    circumference are greyed-orange (between RHS
                    176b and RHS 177a) in color.
Lenticels:          Low density, approximately 0.85 per square cm;
                    elliptical shape; typical examples of which measured
                    3.6 mm in length and 1.9 mm in width; orange-white
                    (between RHS 159a and RHS 159b) in color, with a
                    greyed-white border (RHS 156b).
Branch pubescence:  None.
New growth bark:    Greyed-orange (RHS 176a) in sun to greyed-orange
                    (between RHS 165a and RHS 166a) in shade.
Internodes:         Length averaging 16.5 mm on a one-year shoot.

• Leaves:

Texture:            Glabrous.
Sheen:              Mature leaves semi-glossy with a flat finish on the
                    underside.
Length:             About 101 mm to 164 mm, averaging about 131 mm
                    including the petiole.
Width:              About 67 mm to 78 mm, averaging about 73 mm.
Petiole:            About 44 mm in length and about 2.0 mm in
                    diameter.
Margin:             Serrate.
Margin undulation:  Nearly none.
Form:               Ovate.
Apex:               Acuminate and curved downward.
Base:               Broadly obtuse to truncate.
Venation:           Pinnate.
Glands:
Number:             About 1 to 4, averaging about 2.5.
Position:           Located on the petiole.
Size:               Length averaging 0.8 mm and width averaging 0.8
                    mm.
Form:               Globose.
Stipules:           None observed on mature leaves.
Leaf Color:
Upper leaf surface: Yellow-green (between RHS 146b and RHS 146c).
Lower leaf surface: Yellow-green (between RHS 147b and RHS 147c).
Vein:               Greyed-yellow (RHS 160c).
Petiole:            Greyed-purple (RHS 185a).
Pubescence:         None.

• Flowers:

Size:             Large size, typical flower measuring between 24.9
                  mm to 32.2 mm, averaging about 28.1 mm across.
Color:
Dormant bud:      Brown (RHS 200a).
Pink stage bud:   Red-purple (between RHS 62b and RHS 62c).
Open flower:      Young open flowers red (between RHS 56c and RHS
                  56d) becoming white (RHS 155d) prior to petal fall.
Petals:           Typically five petals per flower; cupped and round in
                  shape; averaging about 13.6 mm long and 14.0 mm
                  wide. Young petals red (RHS 56d) with red (RHS 56c)
                  margins becoming white (RHS 155d) prior to petal fall.
Petal apex:       Rounded.
Petal base:       Acute.
Stamens:
Number:           Variable, 26 to 33, averaging about 29.
Length:           Variable, between 8.8 mm to 12.5 mm, averaging
                  11.0 mm.
Filament color:   White (RHS 155c).
Anther color:     Yellow-green (RHS 153d).
Pistil:
Number:           One.
Size:             Length between 14.0 and 17.6 mm, averaging about
                  15.8 mm.
Pistil color:     Yellow-green (RHS 145c).
Ovary:            Ellipsoid in shape and covered with moderate
                  pubescence.
Sepals:
Number:           Five.
Pubescence:       None.
Color:            Greyed-purple (RHS 183d).
Shape:            Triangular, with a rounded apex.
Size:             Length averaging 5.3 mm, width averaging 4.4 mm.
Nectar cup color: Greyed-orange (RHS 167a).
Pollen:           Abundant; yellow-orange (RHS 20a) in color.
Fragrance:        Slight.
Bloom season:     Onset of bloom in 2011 on April 6; full bloom on
                  April 8.

• Fruit:

Size:                 Medium, averaging about 4.5 cm long, 4.4 cm wide
                      parallel to the suture and 3.9 cm wide perpendicular
                      to the suture.
Typical weight:       40 g.
Form:
Longitudinal section: Round, slightly oblong.
Traverse section:     Generally elliptical, some fruit may be slightly ovate.
Suture:               Shallow but distinct, extending from the base to apex.
Base:                 Flat.
Apex:                 Generally flat.
Stem:                 Average length of 7.0 mm and an average diameter
                      of 3.2 mm.
Skin:
Thickness:            Average.
Surface:              Regular with short pubescence.
Tenacity:             Average.
Astringency:          None.
Tendency to crack:    Low.
Color:                Freckled red (RHS 46a) with a red (between RHS
                      45a and RHS 44b) blush over an orange (RHS 25b)
                      ground color.
Fruit Properties:
Flesh color:          Orange (between RHS 25a and RHS 25b).
Flesh adhesion:       Freestone.
Juice:                Moderate.
Texture:              Fine, melting.
Fibers:               Not noticeable.
Ripens:               Between June 20 and July 2 at Cream Ridge,
                      New Jersey.
Flavor:               Above average, fully flavored and aromatic
                      when soft ripe.
Soluble solids:       16%.
Aroma:                Moderate.
Eating quality:       Very good.
Keeping quality:      Average.
Shipping quality:     Average.
Usage:                Desert.
Market:               Fresh market.
Productivity:         Very good. Trees have produced a crop in five
                      out of five years and a full crop in three out of five
                      years at Cream Ridge, New Jersey.

• Stone:

Type:                 Freestone.
Form:                 Nearly round, but slightly elliptic.
Base angle:           Medium.
Apex angle:           Medium.
Surface:              No prominent markings.
Ridge:                High flanked by shallow lines, extending from the
                      base to the apex.
External color:       Greyed-orange (between RHS 165b and RHS
                      165c).
Internal color when   Greyed-orange (165c).
cracked:
Cavity surface color: Greyed-orange (between RHS 165c and RHS
                      165d).
Average stone dry     1.4 g.
weight:
Average stone wall    Varies between 1.5 and 4.0 mm.
thickness:
Size:                 Averages about 22.46 mm long, 18.5 mm wide
                      parallel to the dorsal ridge, and 11.2 mm wide
                      perpendicular to the dorsal ridge.
Tendency to split:    Low.
Kernel:
Form:                 Ovate.
Skin color:           Greyed-orange (RHS 165c).
Vein color:           Greyed-orange (RHS 165b).
Viability:            Yes.
Dry weight            0.3 g
Size:                 Averages about 14.3 mm long, 9.7 mm wide,
                      and 4.1 mm in breadth.

• Plant/fruit disease and pest resistance/susceptibility: No atypical resistances/susceptibilities have been noted under normal cultural practices.

Claims

1. A new and distinct variety of apricot tree, substantially as herein shown and described.