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World of CitrusWorld of CitrusUFR-3
FFSP · 2014-05
https://www.ffsp.net/wp-content/uploads/2014/05/Citrus-Rootstock-Overview.pdf (opens in a new tab)
FFSP 2014 rootstock overview, UFR-3 page: Orange 15; tetraploid; high yield; low HLB rating; small–medium tree; medium–high fruit quality. Ratings are source-specific, not immunity claims; comparative data were limited.
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UF/IFAS Extension
https://ask.ifas.ufl.edu/publication/HS1260 (opens in a new tab)
UF/IFAS HS1260 5th-edition rootstock table: first commercial availability 2015; germination 80–90%; seedling uniformity 10–49%; tree size intermediate and freeze tolerance intermediate. This guide entry is a source-specific selection aid, not an immunity claim.
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United States plant patent · Google Patents
https://patents.google.com/patent/USPP27744P3/en (opens in a new tab)
Patent source for UFR-3 breeding background. The patent source describes UFR-3 as a sexual cross between the somatic-fusion parent [Nova + H.B. pummelo] and the somatic-fusion parent [Cleopatra + Argentine trifoliate orange]. Parentage notation is preserved as source-reported; no legal-status claim is recorded.
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Ksenija Gasic; John E. Preece; David Karp · HortScience · 2020
https://doi.org/10.21273/HORTSCI50register-20 (opens in a new tab)
The UFR-3 description reports a tetraploid allotetraploid zygotic hybrid produced by crossing two prior somatic hybrids. The tested Orange #15 selection had 5–23 seeds per fruit, a mixture of polyembryonic and monoembryonic seeds, and seedlings were to be carefully rogued in the nursery. No zygotic percentage is reported.
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