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Pixie Grape

Variety of grape

Pixie Grape

Variety of grape

''Pinot Meunier''

The Pixie Grape is a new type of Vitis vinifera cultivar. The Pixie is a natural dwarf grapevine that is derived from the periclinal L1/L2 chimera Pinot Meunier. These dwarf grapevines tend to have short internodes and prefer to grow flowers instead of tendrils. They grow from 1 foot to 2 feet in height and produce clusters with a size on average of 4 inches. It is simple to cultivate in greenhouses and grows year round. Its purpose was to create an easy tool with which to conduct grapevine research. The grape was developed by grape rootstock breeder Dr. Peter Cousins of the USDA and David Tricoli of the Plant Transformation Facility, University of California Davis.

Description

Flowering

The Pixie is a unique grape in that its size is the most important part of its genotype and phenotype. It usually only grows up to about 2 feet in height and does not usually span out in horizontal growth. Internodes on a Pixie are about 25% the length of the Pinot Meunier chimeras length. Flowering is constant on a vine that is still alive and it is not uncommon to view all types of flowering from buds all the way up to ripe fruit just on one vine. Pixies do not grow tendrils however, instead they grow Inflorescences(group or cluster of flowers).

Fruit

Propagation

The Propagation process started with the Pinot Meunier chimera. Unopened flower buds were taken and the anthers were isolated on a medium to create embryogenic callus cultures. Then they were grown into plants where they tissue cultured acclimated to soil and then moved to a greenhouse. Grown under all day artificial light. Once grown pollen was obtained where it was cultured on vines from the vineyard. Seeds were then treated with 1.5% hydrogen peroxide for 24 hrs, 1000 ppm GA3 for one day, after that was three months of moist stratification, then treated with 5000 ppm GA3 for one day before being placed in an incubator at 29.3 °C. These seeds were then treated normally grown and grew into mature plants.

Uses

References

  • Cousins, Peter (2005) NOTICE TO NURSERY OPERATORS AND GRAPE RESEARCHERS OF THE RELEASE OF PIXIE GRAPE
  • Cousins, Peter (2007)Pixie, a dwarf grapevine for teaching and research
  • Boss, P. K. and Thomas, M. R. 2002. Association of dwarfism and floral induction with a grape ‘green revolution’ mutation. Nature 416:847-850.
  • Ryder, E. J. 1985. Use of early flowering genes to reduce flowering time in backcrossing, with special application to lettuce breeding. J. Am. Soc. Hort. Sci. 110:570-573.
  • Skene, K. G. M. and Barlass, M. 1983. Studies on the fragmented shoot apex of grapevine. Journal of Experimental Botany 35(147):1271-1280.
Info: Wikipedia Source

This article was imported from Wikipedia and is available under the Creative Commons Attribution-ShareAlike 4.0 License. Content has been adapted to SurfDoc format. Original contributors can be found on the article history page.

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