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ARS Home » Southeast Area » Fort Pierce, Florida » U.S. Horticultural Research Laboratory » Subtropical Insects and Horticulture Research » Research » Research Project #435924

Research Project: Development of SuperSour and Other Outstanding Rootstocks with Tolerance to HLB

Location: Subtropical Insects and Horticulture Research

Project Number: 6034-21000-018-017-R
Project Type: Reimbursable Cooperative Agreement

Start Date: Nov 1, 2018
End Date: Oct 31, 2021

1. Create hybrid rootstocks which combine germplasm from parental material with good rootstock traits and huanglongbing (HLB) tolerance, propagate the most promising of these hybrids, and establish replicated field trials with commercial scions. 2. Collect field performance data from early-stage replicated rootstock field trials and release new rootstock cultivars as justified by superior performance in multiyear field trials.

Make crosses with new parental combinations. Complete propagation of trees for new trials. Plant new replicated field trials with new rootstocks. Tree size and health measurements. Fruit yield and fruit quality measurements. Polymerase chain reaction (PCR) evaluations of Candidatus Liberibacter asiaticus (CLas) infection.