420 A Millardet et de Grasset

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'420 A Millardet et de Grasset'
Synonyms 420 A - for more see section Synonyms
'420 A Millardet et de Grasset'
use
origin France
Breeding year 1887
VIVC no. 7810
ancestry

Hybrid of
Vitis berlandieri PLANCHON × Vitis riparia MICHAUX

List of grape varieties

' 420 A Millardet et de Grasset' is a base for the biotechnological control of the roots of phylloxera for grape varieties susceptible to phylloxera. It belongs to the group of Vitis berlandieri × Vitis riparia hybrids and is very tolerant of lime, but the yield and quality of the noble variety are deteriorated.

ancestry

Cross of Vitis berlandieri PLANCHON × Vitis riparia MICHAUX by Pierre-Marie Alexis Millardet et Charles Grasset de, France 1887.

Ampelographic features

  • Shoot tip: closed to half-open, with whitish woolen hair, bordered by carmine red
  • Young leaves: slightly bronzed and very shiny
  • Full-grown leaves: upper side dark green, underside pale green, shiny, very thick, heart-shaped, three-lobed, slightly cupped; Stalk bay: lyra to open U-shaped
  • Shoots: dark green with typical reddish purple knots
  • Flower: male pseudo-hermaphrodite

  • Shoot tip

  • Young leaf

  • Adult leaf

  • Shoots

Properties - use

The growth is weak to medium strong, unfortunately the rooting capacity is low. It has an unfavorable effect on the yield and quality and the vines are prone to waterlogging in spring. It is very tolerant of lime.

Is suitable for loose, shallow or deep, rather dry, stony, hot limestone soils in precocious locations.

Synonyms

literature

  • Karl Bauer, Ferdinand Regner , Barbara Schildberger: Viticulture (= AV book. ). 9th, updated edition. Cadmos, Vienna 2013, ISBN 978-3-7040-2284-4 .
  • Joachim Schmid, Frank Manty, Bettina Lindner: Geisenheimer grape varieties and clones (= Geisenheimer reports. 67). Geisenheim Research Institute - Department of Vine Breeding and Refinement, Geisenheim 2009, ISBN 978-3-934742-56-7 .

Individual evidence

  1. ↑ Joachim Schmid, Frank Manty, Bettina Lindner: Geisenheimer grape varieties and clones (= Geisenheimer reports. 67). Geisenheim Research Institute - Department of vine breeding and refinement, Geisenheim 2009, ISBN 978-3-934742-56-7 , pp. 144-145.

Web links