Opal® is the brand name for a cultivar of apple also known as 'UEB32642', produced by crossing 'Golden Delicious' with 'Topaz'. Developed by the Institute of Experimental Botany in Prague and FruitSelect in 1999, it is grown by Broetje Orchards in Washington and marketed by the First Fruits company. It is also cultivated in Austria, the Netherlands, France and the United Kingdom. Opal is a variety registered with the Community Plant Variety Office of the European Union.
This variety of apple is naturally low in polyphenol oxidase making it resistant to browning and is often sold pre-sliced.
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- ^ "US: Popularity of Opal apple continues to grow". The Global Fruit. Nov 2012. Archived from the original on June 26, 2013. Retrieved 20 December 2012.
- ^ Brown, S.K.; Maloney, K. E. (Fall 2009). "Making Sense of New Apple Varieties, Trademarks and Clubs: Current Status" (PDF). New York Fruit Quarterly. Geneva, NY: Department of Horticultural Sciences, Cornell University. 17 (3): 11. Archived from the original (PDF) on 2016-03-04. Retrieved 2012-12-20.
- ^ "Certificate on the grant of Community Plant Variety Rights" (PDF). Institute of Experimental Botany. Retrieved 20 December 2012.
- ^ Thompson, Amy (2 January 2017). "Shhhh. The "Gene Silenced" Apple Is Coming". Mother Jones. Retrieved 3 January 2018.