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Research Project: Genetic Improvement of Citrus for Enhanced Resistance to Huanglongbing Disease and Other Stresses

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Title: Register of new fruit and nut cultivars list 51

Author
item Bowman, Kim
item GROSSER, JUDE - UNIVERSITY OF FLORIDA
item KARP, DAVID - UNIVERSITY OF FLORIDA

Submitted to: HortScience
Publication Type: Peer Reviewed Journal
Publication Acceptance Date: 8/1/2022
Publication Date: 8/25/2022
Citation: Bowman, K.D., Grosser, J., Karp, D. Register of new fruit and nut cultivars list 51. HortScience. 57(9):1174-1233. 2022. https://doi.org/10.21273/HORTSCI.57.9.1174.
DOI: https://doi.org/10.21273/HORTSCI.57.9.1174

Interpretive Summary: The use of grafted trees, composed of a separate scion fruiting variety and rootstock, is critical to a viable industry for all citrus fruit. Most of the world's citrus industries rely on hybrid rootstocks developed by citrus breeding programs to provide the most disease resistant and productive trees that can provide good production of high quality fruit with sustainable inputs and minimal negative environmental impact. This article provides a description of origin, characteristics, propagation, and performance for seven new citrus rootstock cultivars that have been developed by breeding programs and are available for commercial use. The new rootstocks provide combinations of disease resistance to allow better production in affected environments, and include one rootstock from Instituto Valenciano de Investigaciones Agrarias in Spain, and six rootstocks from USDA in Florida.

Technical Abstract: The use of rootstocks is critical to a viable industry for all citrus fruit. This article provides a description of origin, characteristics, propagation, and performance for seven new citrus rootstock cultivars that have been developed by breeding programs and are available for commercial use. The new rootstocks provide combinations of disease resistance to allow better production in affected environments, and include one rootstock from Instituto Valenciano de Investigaciones Agrarias in Spain, and six rootstocks from USDA in Florida. The new rootstocks from USDA were released because of superior tolerance to huanglongbing disease as grafted trees with sweet orange under field conditions.