Discovered
The patent and a later chloroplast study report that TR-1 originated as a spontaneous bud-sport mutation from a Rio Red tree in Weslaco, Texas, in 2004.
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World of CitrusWorld of CitrusTexas Red Grapefruit
The patent and a later chloroplast study report that TR-1 originated as a spontaneous bud-sport mutation from a Rio Red tree in Weslaco, Texas, in 2004.
US Plant Patent US PP31,702 P3, “Grapefruit Tree Named TR-1,” was granted on 28 April 2020. The patent lists Eliezer Silva Louzada and Hilda Sonia del Rio as inventors and Texas A&M University System as applicant.