USPP15650P3 - Prunus Tree Rootstock named ‘Piku 4’ - Google Patents

Prunus Tree Rootstock named ‘Piku 4’ Download PDF

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Publication number
USPP15650P3
USPP15650P3 US10/136,467 US13646702V USPP15650P3 US PP15650 P3 USPP15650 P3 US PP15650P3 US 13646702 V US13646702 V US 13646702V US PP15650 P3 USPP15650 P3 US PP15650P3
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Prior art keywords
prunus
piku
color
new
new variety
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US10/136,467
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US20030208808P1 (en
Inventor
Brigitte Wolfram
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Bundesanstalt fuer Zuchtungsforschung an Kulturpflanzen
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Bundesanstalt fuer Zuchtungsforschung an Kulturpflanzen
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    • A—HUMAN NECESSITIES
    • A01—AGRICULTURE; FORESTRY; ANIMAL HUSBANDRY; HUNTING; TRAPPING; FISHING
    • A01H—NEW PLANTS OR NON-TRANSGENIC PROCESSES FOR OBTAINING THEM; PLANT REPRODUCTION BY TISSUE CULTURE TECHNIQUES
    • A01H6/00—Angiosperms, i.e. flowering plants, characterised by their botanic taxonomy
    • A01H6/74—Rosaceae, e.g. strawberry, apple, almonds, pear, rose, blackberries or raspberries
    • A01H6/7427—Prunus, e.g. almonds
    • A—HUMAN NECESSITIES
    • A01—AGRICULTURE; FORESTRY; ANIMAL HUSBANDRY; HUNTING; TRAPPING; FISHING
    • A01H—NEW PLANTS OR NON-TRANSGENIC PROCESSES FOR OBTAINING THEM; PLANT REPRODUCTION BY TISSUE CULTURE TECHNIQUES
    • A01H5/00—Angiosperms, i.e. flowering plants, characterised by their plant parts; Angiosperms characterised otherwise than by their botanic taxonomy
    • A01H5/08—Fruits

Definitions

  • the present invention comprises a new and distinct cultivar of hybrid Prunus known by the varietal name ‘Piku 4’.
  • the new variety was discovered in 1976 in a selective breeding program designed to produce growth reducing rootstock for cherry trees in Dresden-Pillnitz, Germany as a cross between an unnamed, unpatented variety of Prunus cerasus (Schattenmorelle) (female parent) and an unnamed, unpatented variety of Prunus “Kursar” ( P. kurilensis ⁇ P. sargentii ) (male parent).
  • the new variety differs from its parents in its growth habit. The following characteristic distinguish the new variety from Prunus avium rootstock varieties:
  • the new variety was first asexually reproduced via green cuttings in 1980 in Dresden-Pillnitz, Germany and subsequent propagation therein has confirmed that the characteristics of the new variety are stable and are transmitted to subsequent generations.
  • FIG. 1 shows the tree of the new variety
  • FIG. 2 shows a branch with leaves
  • FIG. 3 shows a branch with flower buds
  • the following detailed description sets forth the characteristics of the new cultivar.
  • the data which defines these characteristics were collected by asexual reproductions via green cuttings carried out in Dresden-Pillnitz, Germany. The color designations were taken outdoors in Dresden-Pillnitz, Germany. Rootstocks were 6 to 7 years old when described. Color designations are noted with reference to standard P. avium rootstock.
  • the new variety prefers dry or sandy soil and is free of PNRV and PDV. As a rootstock, it can be reproduced via softwood cuttings or tissue culture.
  • the new variety anchors adequately with some root sprouts, sufficient compatibility with grafts and exhibits dwarf growth vigor.

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  • Life Sciences & Earth Sciences (AREA)
  • Health & Medical Sciences (AREA)
  • Physiology (AREA)
  • Botany (AREA)
  • Developmental Biology & Embryology (AREA)
  • Environmental Sciences (AREA)
  • Natural Medicines & Medicinal Plants (AREA)
  • Cultivation Of Plants (AREA)
  • Breeding Of Plants And Reproduction By Means Of Culturing (AREA)

Abstract

A new and distinct Prunus rootstock compatible with other Prunus varieties and producing trees with reduced growth, suitable to sandy soil with high productivity.

Description

Classification: Prunus L.
Varietal denomination: ‘Piku 4’.
BACKGROUND OF THE INVENTION
The present invention comprises a new and distinct cultivar of hybrid Prunus known by the varietal name ‘Piku 4’. The new variety was discovered in 1976 in a selective breeding program designed to produce growth reducing rootstock for cherry trees in Dresden-Pillnitz, Germany as a cross between an unnamed, unpatented variety of Prunus cerasus (Schattenmorelle) (female parent) and an unnamed, unpatented variety of Prunus “Kursar” (P. kurilensis×P. sargentii) (male parent). The new variety differs from its parents in its growth habit. The following characteristic distinguish the new variety from Prunus avium rootstock varieties:
    • 1. Three-way hybrid.
    • 2. Reduces growth in grafted varieties by 30-40%.
    • 3. Suitable for sandy soil.
    • 4. Precocious crop.
    • 5. Glossiness of upper leaf surface.
    • 6. Growth habit.
The new variety was first asexually reproduced via green cuttings in 1980 in Dresden-Pillnitz, Germany and subsequent propagation therein has confirmed that the characteristics of the new variety are stable and are transmitted to subsequent generations.
DESCRIPTION OF THE DRAWING
The accompanying photographic drawings illustrate the new variety, with the color being as nearly true as is possible with color illustrations of this type.
FIG. 1 shows the tree of the new variety;
FIG. 2 shows a branch with leaves; and
FIG. 3 shows a branch with flower buds;
 DESCRIPTION OF THE PLANT
The following detailed description sets forth the characteristics of the new cultivar. The data which defines these characteristics were collected by asexual reproductions via green cuttings carried out in Dresden-Pillnitz, Germany. The color designations were taken outdoors in Dresden-Pillnitz, Germany. Rootstocks were 6 to 7 years old when described. Color designations are noted with reference to standard P. avium rootstock. The new variety prefers dry or sandy soil and is free of PNRV and PDV. As a rootstock, it can be reproduced via softwood cuttings or tissue culture. The new variety anchors adequately with some root sprouts, sufficient compatibility with grafts and exhibits dwarf growth vigor.
TREE
  • Size: Small-medium; having an average height of 1.90 m and an average width of 2.00 m.
  • Form: Bushy, drooping.
  • Trunk:
      • Surface texture.—Smooth.
      • Bark color.—Dark.
      • Diameter.—5.0 cm, measured at a height of 40 cm.
  • Branches:
      • Surface texture.—Smooth.
      • Bark color.—200A.
      • New growth color.—Light red.
      • Mature growth color.—Brown.
      • Average crotch angle.—60-80°.
      • Internode length.—Medium.
      • Lenticels.—Diameter: 0.05-0.15 cm. Color: 161A. Amount per shoot: >100.
      • Bud.—Medium, round.
  • Leaves:
      • Length.—10.4 cm.
      • Width.—5.0 cm.
      • Surface texture.—Upper side glossy.
      • Form.—Elongated, elliptical.
      • Color.—Upper Surface: 146A. Lower Surface: 146B.
  • Petioles:
      • Length.—1.7 cm.
      • Thickness.—0.15 cm.
  • Leaf glands:
      • Quantity.—1-4.
      • Position.—Under leaf end.
      • Size.—0.20 cm.
      • Color.—Green-red.
  • Stipules:
      • Length.—1.0-1.2 cm.
  • Flowers:
      • Diameter.—2.50 cm.
      • Color.—Upper Surface: N155A. Lower Surface: N155A.
      • Number.—Many.
      • Petals.—Length: Approximately 1.2 cm. Width: Approximately 0.8 cm. Quantity per flower: 5.
      • Sexual characteristics.—Triploid, crop is rare.
      • Stamen number.—>10.
      • Pistil number.—1.
FRUIT
  • Maturity date/location: Mid-season in Dresden, Pillnitz.
  • Weight: 2 grams.
  • Axial diameter: 1-2 cm.
  • Fruit stone:
      • Length.—Approximately 0.6 cm.
      • Diameter.—Approximately 0.5 cm.
  • Skin: 187A.
  • Flesh color: 187A.
GENERAL
  • Weather hardiness: Sufficient tolerance to winter frost.
  • Disease resistance: Tolerance to Cytospora.

Claims (1)

1. A new and distinct variety of Prunus rootstock named ‘Piku 4’ substantially as shown and described.
US10/136,467 2002-05-01 2002-05-01 Prunus Tree Rootstock named ‘Piku 4’ Expired - Lifetime USPP15650P3 (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
US10/136,467 USPP15650P3 (en) 2002-05-01 2002-05-01 Prunus Tree Rootstock named ‘Piku 4’

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
US10/136,467 USPP15650P3 (en) 2002-05-01 2002-05-01 Prunus Tree Rootstock named ‘Piku 4’

Publications (2)

Publication Number Publication Date
US20030208808P1 US20030208808P1 (en) 2003-11-06
USPP15650P3 true USPP15650P3 (en) 2005-03-15

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Family Applications (1)

Application Number Title Priority Date Filing Date
US10/136,467 Expired - Lifetime USPP15650P3 (en) 2002-05-01 2002-05-01 Prunus Tree Rootstock named ‘Piku 4’

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Also Published As

Publication number Publication date
US20030208808P1 (en) 2003-11-06

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