Grant Information

DEVELOPMENT OF NEXT-GENERATION SUPERSOUR ROOTSTOCKS WITH TOLERANCE TO HLB

Sponsoring Institution Agricultural Research Service/USDA
Status ACTIVE
Funding Source USDA INHOUSE
Reporting Frequency Annual
Project Director BOWMAN K D
Accession Number 441585
Project Number 6034-21000-020-005R
Dates 2022-05-01 - 2025-04-30
Recipient Organization AGRICULTURAL RESEARCH SERVICE
219 SOUTH ROCK ROAD
FT PIERCE,FL 34945
Keywords breeding
fruit
huanglongbing
quality
rootstock
yield
Research Effort Applied (50%)
Basic (50%)
Developmental (0%)
Classification Parameters
Knowledge AreaSubject of InvestigationField of SciencePercent
204 - Plant Product Quality and Utility (Preharvest) 920 - Orange 1080 - Genetics (excludes breeding) 40%
203 - Plant Biological Efficiency and Abiotic Stresses Affecting Plants 910 - Grapefruit 1000 - Biochemistry and biophysics 30%
212 - Pathogens and Nematodes Affecting Plants 999 - Citrus, general/other 1160 - Pathology 30%
Goals / Objectives
New hybrids will be created to combine important rootstock traits, new replicated field trials will be planted, and field performance data will be collected from the trials each year. Many trials have already been planted with new hybrid rootstocks and data collected over multiple years. As sufficient performance information is available, superior new rootstock cultivars will be released.
Methods (unparsed)

Objective 1. Collect field performance data from Stage 1 and 2 replicated rootstock field trials and release new rootstock cultivars as justified by superior performance in multiyear field trials. More than twelve Stage 1 trials with sweet orange scion and containing more than 300 next-generation SuperSour rootstocks will be used to collect annual performance information on tree survival, fruit yield, fruit quality, tree size, and tree health. Trials are established with multiple replications of each rootstock and using commercial standard rootstocks for comparison.