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ARS Home » Southeast Area » Fort Pierce, Florida » U.S. Horticultural Research Laboratory » Citrus and Other Subtropical Products Research » Research » Research Project #434434

Research Project: Accelerating Implementation of HLB Tolerant Hybrids as New Commerical Cultivars for Fresh and Processed Citrus

Location: Citrus and Other Subtropical Products Research

Project Number: 6034-41430-007-04-A
Project Type: Cooperative Agreement

Start Date: Jan 15, 2018
End Date: Dec 14, 2021

Objective:
Identify field Huanglongbing (HLB)-resistant/tolerant hybrids in the University of Florida Breeding program and select promising candidates for evaluation of flavor quality by USDA-ARS as well as qualitative trait loci mapping associated with HLB-resistance and tolerance and validation of resistance/tolerant markers especially in Poncirus-derived plantings. Increase public and industry awareness of identified HLB-tolerant hybrids by the research on USDA breeding lines that will be screened for HLB tolerance and commercial flavor quality.

Approach:
Phenotype University of Florida (UF) breeding program citrus lines in by determining tree growth, health index, pathogen bacterial titer and disease symptoms. Conduct genotyping-by-seqencing and genotyping with single nucleotide polymorphism (SNP) markers in parents and hybrids focusing on Poncirus-derived hybrids. Provide samples to ARS for quality evaluation. Create and maintain a website containing interactive resources and design detailed surveys for growers and processors.