U.S. flagAn official website of the United States government
                    Here's how you know **Official websites use .gov**
                            
                            A **.gov** website belongs to an official government organization in the United States.
 **Secure .gov websites use HTTPS**
                            
                            A **lock** (                            
                              A locked padlock                                                      
                            
                            ) or **https://** means you’ve safely connected to the .gov website. Share sensitive information only on official, secure websites.


Menu Agricultural Research Service
						
                    U.S. DEPARTMENT OF AGRICULTURE
 Citrus and Other Subtropical Products Research: Fort Pierce, FL
 close



    Research

                    Research Projects
                                    Publications
                                    Collaborations
                                    News
                People

                    Staff Listing
                                    Careers


        


                    USDA Links
                        USDA Main Page
                                    ARS Main PageSearch small
                    Search
            
            ARS Home
                                About ARS
                                Contact Us




ARS Home Southeast Area Fort Pierce, Florida U.S. Horticultural Research Laboratory Citrus and Other Subtropical Products Research Research Publications at this Location





- ARS National Programs
- Search for a scientific manuscript
- Search for a research project
- ARS Software
- Programs and Projects
- Collaborations
- Subjects of Investigation
- Publications

Title:   Author  item
                                            Bai, Jinheitem
                                            Baldwin, Elizabeth

                                                         - *Liz*item
                                            Driggers, Randallitem
                                            HEARN, JACK - Retired ARS Employeeitem
                                            Stover, Eddie
  Submitted to: Meeting Abstract
                                    Publication Type: Abstract Only
                                    Publication Acceptance Date: 3/27/2013
                                    Publication  Date: 5/25/2013
                                    Citation: Bai, J., Baldwin, E.A., Driggers, R.E., Hearn, J., Stover, E.W. 2013. Volatile profile comparison of USDA sweet-orange-like hybrids vs ‘Hamlin’ and ‘Ambersweet’[abstract]. The Florida State Horticultural Society Annual Meeting, June 2-4, 2013, Sarasota, Florida.Interpretive Summary:
                                Technical Abstract: Volatiles of six hybrids (‘Ambersweet’ orange crossed with one of three different orange hybrids) were analyzed using a gas chromatography – mass spectrometry (GC-MS) to compare the volatile profiles with ‘Ambersweet’ and ‘Hamlin’, the most widely grown early sweet orange in Florida. All hybrids are 1⁄2 sweet orange and varying amounts of tangerine, grapefruit, Poncirus trifoliata and one putatively includes sour orange in its pedigree. In total, 136 volatiles were detected from the 8 hybrid lines/commercial cultivars over two harvests, and 20 components were detected in all samples, including monoterpenes (limonene, ß-myrcene, a-pinene, a-terpinene, terpinen-4-ol and linalool), esters (ethyl butanote, ethyl pentanoate and ethyl acetate), aldehydes (acetaldehyde, hexanal, and nonanal) and alcohols (ethanol and hexanol). Total abundance of volatiles in January-harvested fruits was 30% higher than the same fruits harvested in November. ‘Ambersweet’ contained highest amount of volatiles, and of them, nootkatone, intermedeol, and 5 other compounds were not detected in any of the hybrids, and some of them even not in ‘Hamlin’. On the other hand, 12 compounds, including pentanal, ethyl 2-butenoate, ethyl nonanoate, neral and geranial were not detected in ‘Ambersweet’, but were found in ‘Hamlin’ and some of the hybrids. Stepwise discriminant analysis selected 35 components from 136 volatiles identified, which were used to apply cluster analysis. The results show that FF-1-75-55, FF-1-76-50 and FF-1-76-52, all with the same parents (‘Ambersweet’ x ‘FF-1-30-52 [1/2 sweet orange and 1/2 tangerine]’), are close to FF-1-64-97 and FF-1-65-55, which also had the same parents (‘Ambersweet’ x ‘7-5-5 [sweet orange x unknown]’), and they are all similar to November-harvested ‘Hamlin’. They are discriminated from November ‘Ambersweet’ and further discriminated from FF-1-74-14, a hybrid with 1/8 P. trifoliata, which includes slight off-flavor frequently found in Poncirus hybrids. All those are discriminated from January-harvested ‘Hamlin’ and ‘Ambersweet’ fruit. A principle component analysis (PCA) separated ‘Ambersweet’ from all hybrids and ‘Hamlin’ along the PC 1 axis and separated November harvests from January harvests along PC 2.  All the new lines are sweet-orange-like, early season hybrids in fruit size, color, and informal sensory panel flavor analysis. This volatile analysis supports the classification of the hybrids as sweet orange.


Return to top


Connect with ARS Sign up


ARS Home
                            USDA.gov
                            Plain Writing
                            Policies & Links
                            Civil Rights Statements
                            FOIA
                            Accessibility Statement
                            Privacy Policy
                            Non-Discrimination Statement
                            Quality of Information
                            USA.gov
                            WhiteHouse.gov