Sponsoring Institution
Agricultural Research Service/USDA
Status
ACTIVE
Funding Source
USDA COOPERATIVE AGREEMENT
Reporting Frequency
Annual
Project Director
BALDWIN E A
Accession Number
426745
Project Number
6034-41430-005-33S
Dates
2014-06-01 - 2015-06-30
Recipient Organization
UNIVERSITY OF FLORIDA
FORT PIERCE,FL 33450
Keywords
citrus
degreening
ethylene
oranges
postharvest
tangerines
Research Effort
Applied (40%)
Basic (40%)
Developmental (20%)
Classification Parameters
| Knowledge Area | Subject of Investigation | Field of Science | Percent |
|---|
| 502 - New and Improved Food Products |
999 - Citrus, general/other |
1000 - Biochemistry and biophysics |
58% |
| 502 - New and Improved Food Products |
1129 - Berries and cane fruits, general/other |
1160 - Pathology |
16% |
| 503 - Quality Maintenance in Storing and Marketing Food Products |
1469 - Solanaceous and related crops, general/other (for potato use 1310) |
2000 - Chemistry |
16% |
| 503 - Quality Maintenance in Storing and Marketing Food Products |
1099 - Tropical/subtropical fruit, general/other |
1020 - Physiology |
10% |
Goals / Objectives
Determine the effect of citrus greening or Huanglongbing (HLB) disease on degreening citrus fruit using ethylene gas.
Methods (unparsed)
Early season citrus fruits often have more green pigment having not yet experienced cold nighttime temperatures that induce degreening. Disease-affected fruit have more green pigment due to disease-induced immaturity and may be resistant to degreening necessitating investigation of ethylene level, temperature, time combination testing. Healthy and diseased citrus fruit would be subjected to various ethylene concentrations, humidity, temperature and time combinations using a simulated commercial degreening chaimber at the University of Florida Indian River Research and Education Center next door to the USDA-ARS Horticultural Research Center.
Methods
Early season citrus fruits often have more green pigment having not yet experienced cold nighttime temperatures that induce degreening. Disease-affected fruit have more green pigment due to disease-induced immaturity and may be resistant to degreening necessitating investigation of ethylene level, temperature, time combination testing. Healthy and diseased citrus fruit would be subjected to various ethylene concentrations, humidity, temperature and time combinations using a simulated commercial degreening chaimber at the University of Florida Indian River Research and Education Center next door to the USDA-ARS Horticultural Research Center.