Crabapple tree named ‘JFS KW213MX’

Abstract

A variety of crabapple which combines a combination of a narrow, upright columnar growth habit, short internodes resulting in compact growth, attractive reddish purple flowers, glossy reddish purple foliage, persistent fruit, and a strong resistance to the diseases fireblight and apple scab.

Claims

1. A new and distinct variety of crabapple tree, as herein illustrated and described.

Description

BRIEF DESCRIPTION OF THE DRAWING

(1) The colors of an illustration of this type may vary with lighting 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.

(2) FIG. 1: Shows the original tree at 7 years old with summer foliage illustrating its narrow upright columnar shape

(3) FIG. 2: Shows the original tree in flower at 10 years of age.

(4) FIG. 3: Shows a close-up of the flowers on the original tree.

(5) FIG. 4: Shows a close up of a few flowers on a display board with a scale.

(6) FIG. 5: Shows the original tree at 8 years of age with fruit

(7) FIG. 6: Shows a close-up of the fruit on the original tree

(8) FIG. 7: Shows a close-up of fruit on a display board with a scale.

(9) FIG. 8: Shows a close-up of fruit halved on a display board with a scale.

(10) FIG. 9: Shows a dormant branch tip on a display board with a scale illustrating the short internode length.

(11) FIG. 10: Shows the original tree at 7 years of age without foliage during the winter illustrating its narrow upright columnar shape.

DETAILED BOTANICAL DESCRIPTION

(12) The following detailed description of the JFS KW213 variety is based on observations of the original tree growing in Boring, Oreg. and of two and three year old asexually reproduced progeny. The observed progeny were trees which were growing in Canby, Oreg. Color descriptions are made with reference to The Royal Horticultural Society (London) Colour Chart 1986, except where ordinary dictionary significance of color is indicated. Scientific name: Malus JFS KW213MX. Parentage: Seed parent.Open pollinated seedlings of Malus KW-78MX. Pollen parent.Unknown. Tree: Overall shape.Narrow, upright column. Height.Original tree at 10 years of age, about 4.5 meters high. Width.Original tree at 10 years of age 1.70 meters spread. Caliper (trunk diameter).Original tree at 10 years of age, about 109 mm at 100 mm height, 88 mm at 800 mm height. Trunk.Strong and straight under nursery growing conditions. Trunk bark texture.Smooth, some vertical fissures with age. Trunk bark color.Brown 200A to Brown 200C. Immature bark color.Red Purple 72A to Red Purple 73A. Mature bark color.Purple 79A to 79C. Lenticels.Elongated 0.75 mm0.25 mm disappearing by the 3.sup.rd year. Orange White 159C in color. Branch color.Purple 79A to Violet 83A. Branch lenticels.Similar to those on the trunk. Dormant buds.Elongated oval with acute tip, imbricate scales, 2 mm by 4 mm. Internodes.Average internode length is about 15-20 mm on a one-year old shoot. Hardiness.Has tolerated temperatures to 10 degrees F. in Boring Oreg. which is the lowest temperature experienced in this location. It is believed to have zone 4 cold hardiness similar to other plants of the same species. Disease resistance.Excellent resistance to fireblight (Erwinia amylovora), powdery mildew (Podosphaera leucotricha) & apple scab (Venturia inaequalis) on foliage and fruit. Leaves: Except as otherwise noted, observations are from twenty vigorous growth leaves. Arrangement.Alternate. Type.Simple, entire, occasionally with 1 to 2 small lobes. Texture.Smooth, slight undulation between the veins. Sheen.Glossy on upper leaf surface only. Length.Averaging 70 mm to 90 mm. Width.Averaging 40 mm to 50 mm. Petioles.20 mm-30 mm long, about 1 mm in diameter. Overall shape.Ovate with 1 or 2 occasional side lobes. Margin.Serrulate. Tip.Acute. Base.Broadly acute. Stipules.Two per leaf, 10 mm to 15 mm long by 2 mm to 4 mm wide. Summer leaf color.Upper leaf surface: Red Purple 59A to Purple 79B. Lower leaf surface: Greyed Purple 183B to Greyed Purple 185A. Vein: Red Purple 61A to Purple 79A. Fall leaf color.Beginning Orange Red 35A turning to Orange Red 32A. Fall color begins.November 1.sup.st (Boring, Oreg. 2017). Fall color peak.November 15.sup.th (Boring, Oreg. 2017). Fall color ends.November 30.sup.th (Boring, Oreg. 2017). Pubescence.None. Persistence.Tree is deciduous. Flowers: Overall.Number of flowers per cluster: 5 to 6; flowers are single. Shape.Symmetrical, rounded, 5 petals, cupped. Size.Approximately 30 mm to 34 mm in diameter. Unopened bud.Red Purple 60B to Red Purple 60C. Petals.Five petals per flower, 8 mm to 10 mm wide16 to 18 mm long. Red Purple 61B fading to Red Purple 62C. Shape oval to obovate, petal margins are touching. Sepals.Acute, length 2 mm6 mm at base. Red Purple 59B to 60A. Stamen.About fifteen to twenty stamens, 8 mm to 10 mm arranged concentrically around pistil. Red Purple 61A. Anthers.Greyed Orange 163A. 1 to 1.5 mm long by 0.5 mm to 0.25 mm in diameter. Pistil.Red Purple 61A compound, 3 to 5 branched, length 8 mm-10 mm. Ovary inferior, typically five carpels. Pollen.Yellow Orange 22B to 22C. Moderate amount of pollen. Pedicel.22 mm to 26 mm long by 0.5 mm to 0.6 mm in diameter. Red Purple 60D. Pubescence.Yes on the upper side of the sepal. Fragrance.Slightly sweet. Flowering date.In Boring, Oreg. 2017. First bloom April 16th, peak bloom April 22nd, last bloom May 7th. (Bloom was about 2 weeks later than average at this location in 2017 due to cold spring weather). Fruit: Observations are from a sampling of typical fruit. Cluster.3 to 6 fruits per cluster. Size.Typical fruit is 15 mm to 17 mm in diameter by 16 mm to 18 mm long. Shape.Round to slightly oval. Skin.Smooth. Lenticels.None observed. Calyx.Sometimes present at maturity. Color.Immature summer fruit is Yellow Green 143C ripening to Red 44A in October; then turns Red 46A to Red 45B when fully ripe in October. Seeds.Typically 3 per fruit, ovoid, about 4 mm long and about 3 mm wide with a smooth surface, Greyed Orange 166C to Greyed Orange 165B in color. Fruit production.Prolific. Fruit persistence.90% still persistent Nov. 15, 2017. Usage.Ornamental, non-edible.

COMPARISON TO THE SEED PARENT

(13) Compared to the seed parent tree KW-78MX, my new cultivar, JFS KW213MX, has larger flowers which are Purple Red 61B to Purple Red 62C compared to white. In addition, my new cultivar has foliage with an upper leaf surface color of Red Purple 59A to Purple 79B compared to the green upper surface leaf color of KW-78MX. JFS KW213MX has fruit which is 15-17 mm in diameter while KW-78MX has 20-25 mm diameter fruit. In addition, JFS KW213MX is highly resistant to apple scab disease whereas KW-78MX is only moderately resistant to this disease.

COMPARISON TO OTHER VARIETIES

(14) TABLE-US-00001 Malus JFS Malus Durleo Malus JFS KW213MX PP20167 W214MX Form Narrow upright Compact upright Narrow upright column oval. column Leaf 80 mm to 85 mm 60 mm to Length 90 mm 65 mm Leaf 40 mm to 43 mm 40 mm to Width 50 mm 45 mm Petiole 20 mm 27 mm 20-25 mm Spring Red Purple Green 143B Green 131A to Upper 59A to 131C Leaf Color Purple 79B Branch Purple 79A to Greyed Purple Greyed Green Color 79C 183B 197A to Greyed Green 197C Bark on Smooth with Bole like bumps Smooth, some trunk vertical fissures vertical fissures. Branch 40-50 degrees 60-70 degrees 40-50 degrees Angles on 2 YR trees Fruit Color Red 44A to Red Purple Red 45A to Red 46A 59A Red 34A Fruit Size 15 to 17 mm 10 mm 10 mm 13 to 14 mm long 16-18 mm 14-18 mm wide Fruit Shape Round to Round Round to slightly slightly oval flattened

COMPARISON OF AVERAGE INTERNODE LENGTH

(15) When compared to other commercial ornamental crab apple varieties JFS KW213MX has significantly shorter average internode lengths.

(16) TABLE-US-00002 Cultivar Average internode length Malus JFS KW213MX 15-20 mm Malus JFS-KW5 (PP14,375) 25-30 mm Malus Perfect Purple (unpatented) 25-30 mm Malus Spring Snow (unpatented) 30-35 mm Malus Prairiefire (unpatented) 30-35 mm Malus Profusion (unpatented) 25-30 mm