Shasta, Tahoe, Yosemite Mandarins: TDE Hybrids

Tech ID: 24463 / UC Case 2002-367-0

Patent Status

Country Type Number Dated Case
United States Of America Issued Patent 16,289 02/28/2006 2002-367


Brief Description


California is one of the largest citrus producers in the world, and the demand for fresh citrus fruit that is seedless or low-seeded is on the rise. W. Murcott mandarin is the currently popular mandarin cultivar that has been known worldwide for its high quality and about 2-3 million trees have been widely planted throughout California over the past decade. Unfortunately, isolation of citrus orchards have been difficult and consequently, W. murcott mandarins have become very seedy due to cross pollination by other citrus varieties. Therefore, consumer demands for mandarins that can maintain a low seed count and high-quality is increasing.


Brief Description:

UCR Researchers developed Shasta Gold (TDE2), Tahoe Gold (TDE3) and Yosemite Gold (TDE4) mandarin hybrids. All three produce low-seeded or seedless fruit with deep orange, easy to peel rinds, and rich sweet flavor. They exhibit excellent vertical tree growth habits, which allows it to produce a large and dense crown. Tahoe matures the earliest between November - January, while Shasta and Yosemite mature later between December - March and December - January, respectively.


  • Low-seeded or seedless
  • Exceptional quality – rich, sweet, juicy
  • Smooth and easy-to-peel rind
  • Vigorous trees with good canopy density


Areas with mid-late season marketing window:

  • Tahoe matures November - January
  • Yosemite matures December - January
  • Shasta matures December - March


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Other Information


mandarin, mandarin hybrids, seedless, low-seeded citrus fruit, citrus mandarin, orange, cross pollination, citrus crop, global food

Categorized As