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
 Wheat, Sorghum and Forage Research: Lincoln, NE
 close



    Research

                    Research Projects
                                    Publications
                                    Collaborations
                                    News
                People

                    Staff Listing
                                    CareersSearch small
                    Search
            
            ARS Home
                                About ARS
                                Contact Us




ARS Home Plains Area Lincoln, Nebraska Wheat, Sorghum and Forage 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
                                            Vogel, Kennethitem
                                            Sarath, Gautamitem
                                            Mitchell, Robert

                                                         - *Rob*
  Submitted to: Grassland International Congress Proceedings
                                    Publication Type: Proceedings
                                    Publication Acceptance Date: 11/15/2004
                                    Publication  Date: 7/26/2005
                                    Citation: Vogel, K.P., Sarath, G., Mitchell, R. 2005. Divergent breeding for tiller ivdmd modified leaf, sheath, and stem composition of switchgrass. p.116. In F. P. O'Mara et al. (ed.) Proc. XX Int. Grassland Congress, Dublin, Ireland 26 June-2 July 2005. Wageningen, Academic Publishers, Wageningen, The Netherlands.Interpretive Summary: Switchgrass is a cross-pollinated species that is native to the prairies of  temperate North America. Breeding to improve its forage quality has been conducted using post-heading, whole plant in vitro dry matter digestibility (IVDMD) as the selection criterion. One breeding cycle for low IVDMD and three cycles for high IVDMD were completed in a switchgrass population adapted to the USA mid-latitudes.  Sward trials demonstrated that whole plant IVDMD had been improved.  The objective of this study was to determine the effect of breeding for tiller IVDMD on leaf, sheath, and stem digestibility and composition of plants of the derived populations. Leaf, sheath, and stem IVDMD, cell wall, cellulose, hemicellulose, and lignin concentration of switchgrass responded differently to breeding for tiller IVDMD indicating tissue specific regulation of plant composition. Breeding switchgrass for use in grazing systems should emphasize leaf and sheath composition.  Stem composition can be modified to develop switchgrass cultivars for biomass energy.
                                Technical Abstract: Switchgrass (Panicum virgatum. L.) is a cross-pollinated, C4 species that is native to the prairies of  temperate North America. Breeding to improve its forage quality has been conducted using post-heading, whole-tiller in vitro dry matter digestibility (IVDMD) as the selection criterion. One breeding cycle for low IVDMD and three cycles for high IVDMD were completed in a switchgrass population adapted to the USA mid-latitudes.  Sward trials demonstrated that whole plant IVDMD had been improved.  The objective of this study was to determine the effect of breeding for tiller IVDMD on leaf, sheath, and stem digestibility and composition of plants of the derived populations. Leaf, sheath, and stem IVDMD, cell wall, cellulose, hemicellulose, and lignin concentration of switchgrass responded differently to breeding for tiller IVDMD indicating tissue specific regulation of plant composition. Breeding switchgrass for use in grazing systems should emphasize leaf and sheath composition.  Stem composition can be modified to develop switchgrass cultivars for biomass energy.


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