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
 Corn Insects and Crop Genetics Research: Ames, IA
 close



    Research

                    Research Projects
                                    Publications
                                    Collaborations
                                    News
                People

                    Staff Listing
                                    Careers


        


                    Database Projects
                        MaizeGDB
                                    SoyBase
                                    PeanutBase
                                    Legume Information System
                                    Maize Newsletter
                                    Maize Mutant Phenotypes
                                    Maize Genetics Conference
                                    Shiny Soybase CNV
                                    Shiny Soybase SNP
                                    Common Bean and Alfalfa - PvGEA
                                    Common Bean and Alfalfa - AGEDSearch small
                    Search
            
            ARS Home
                                About ARS
                                Contact Us




ARS Home Midwest Area Ames, Iowa Corn Insects and Crop Genetics 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
                                            Palmer, Reiditem
                                            BROWN, ANTHONY - CSIRO PLANT INDUSTRYitem
                                            Scott, Marvinitem
                                            HORNER, HARRY - IOWA STATE UNIVERSITY
  Submitted to: Botanical Society of America Abstracts
                                    Publication Type: Abstract Only
                                    Publication Acceptance Date: 6/6/2001
                                    Publication  Date: 8/10/2001
                                    Citation: PALMER, R.G., BROWN, A.H., SCOTT, M.P., HORNER, H.T. A SURVEY OF WILD PERENNIAL GLYCINE SPECIES TO ASSESS NECTAR PRODUCTION, COMPOSITION AND FLORAL MORPHOLOGY. BOTANICAL SOCIETY OF AMERICA ABSTRACTS. 2001. Abstract No. 326.Interpretive Summary:
                                Technical Abstract: One of the limitations for the commercialization of hybrid soybean is the low level of cross-pollination in seed production fields.  Insect- mediated cross-pollination is the method of choice but limited information is available in soybean on insect/flower attraction.  Out- crossing in the wild perennial soybean species, Glycine arygera and G.  clandestina varied considerably, but can exceed 50% of the seed from chasmogamous fruit in some situations.  Our objective was to survey the wild perennial Glycine species to assess nectar production and composition and floral morphology.  About 70 accessions representing 19 species for the perennial soybean were studied.  Measurements for the standard, wings and keel petals of two flowers per accession were taken. Nectar was collected from flowers by the use of capillary tubes.  Sugar concentration was measured with a refractometer and by chemical  determinations.  Large differences in floral morphology of the standard, wing and keel petals were recorded.  Total sugar concentrations varied among the species by 3 fold.  Differences were noted among accessions of the same species and among ploidy levels within a species.  The high sugar levels and floral morphology are compatible with entomophilous characteristics that favor insect visitations.  The result is enhanced levels for cross-pollination.


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