Please check out these related sites!
1) Register of New Fruit and Nut Cultivars List 52 (latest)
https://doi.org/10.21273/HORTSCI18040-24
2) Register of New Fruit and Nut Cultivars archive (Lists 35-52)
3) Fruit and Nut Cultivars Database (online Register)
https://www.fruitandnutlist.org
4) North American fruit and nut patents PBR and HortScience 2016-
https://drive.google.com/file/d/1LtCeTo13PDFsO6AqFSw_1PGo_lvP0VWR/view?usp=sharing
5) How to find and use intellectual property documents for plants
https://drive.google.com/file/d/1Zj-F1QPiqhCcdwebG2mPuU7X_VGuxDZ/view?usp=sharing
6) UC Riverside Givaudan Citrus Variety Collection
7) Modern Citrus Cultivars Descriptive Database
https://citrusvariety.ucr.edu/modern-citrus-cultivars-descriptive-database