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Recorded contributions to citrus breeding, introduction, and history.
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World of CitrusWorld of CitrusRecorded contributions to citrus breeding, introduction, and history.
5 credits across 2 varieties · Dr. John R. Brown
Made the Clementine × Yuzu breeding population from which ClemYuzu 2-2 originated.
Ten Degree Tangerine traces to Dr. John R. Brown's ClemYuzu breeding population. Following the severe January 1961 freeze, a Clementine tangerine required about a year to recover to flowering condition and was then pollinated with Yuzu. The resulting Clementine × Yuzu seedlings were designated ClemYuzu.
College Station, Texas, United States
Sources: [2]
Maintained and evaluated the hardy citrus hybrid population through severe Texas freeze conditions.
Dimicelli was documented among the named Clementine mandarin × Poncirus trifoliata siblings associated with plantings that survived the severe December 1989 Texas freeze. The hybrid group reportedly survived approximately 0°F (-18°C) at Franklin and 5°F (-15°C) at Houston and subsequently produced fruit. The surviving account does not identify a separate site-specific temperature measurement for Dimicelli alone.
Texas, United States
Sources: [5]
Made and raised the Clementine mandarin × Poncirus trifoliata hybrid population from which Dimicelli was reportedly selected.
John R. Brown crossed Clementine mandarin with Poncirus trifoliata as part of his effort to combine dessert-citrus characteristics with greater cold hardiness. Dimicelli was later documented among the named selections associated with this hybrid population. The specific cross year and location are undocumented.
Texas, United States
Sources: [5]
Retained Dimicelli as a distinct selection within his cold-hardy citrus breeding population.
Dimicelli was retained as a distinct selection from John R. Brown's reported Clementine mandarin × Poncirus trifoliata hybrid population. The original seedling number, first-fruiting date, and precise selection criteria are undocumented.
Texas, United States
Sources: [5]
Selected and maintained ClemYuzu 2-2 from his Clementine × Yuzu breeding population.
ClemYuzu 2-2 was retained as one of the numbered selections from Brown's Clementine × Yuzu population. Brown later described 2-2 as potentially his sweetest and best hardy citrus hybrid when fruit quality was favorable and reported survival near 5°F (-15°C) with only slight damage.
Texas, United States
Sources: [2]