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
 U.S. Dairy Forage Research Center: Madison, WI
 close



    Research

                    Research Projects
                                    Publications
                                    Collaborations
                                    News
                                    Software
                People

                    Staff Listing
                                    Careers


        


                    Archives
                        Presentations
                                    World Dairy Expo
                                    Newsletters and Research Summaries
                    Resources
                        General Resources
                                    Books
                                    Teacher's Resources
                                    New Research Dairy Updates
                                    Integrated Research at USDFRCSearch small
                    Search
            
            ARS Home
                                About ARS
                                Contact Us




ARS Home Midwest Area Madison, Wisconsin U.S. Dairy Forage Research Center 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
- IACUC Summaries - Milwaukee, WI Aquaculture
- IACUC Summaries - US Dairy Forage Research Center

Title:   Author  item
                                            Riday, Heathcliffe
  Submitted to: Euphytica
                                    Publication Type: Peer Reviewed Journal
                                    Publication Acceptance Date: 9/27/2007
                                    Publication  Date: 10/16/2007
                                    Citation: Riday, H. 2007. Heritability of frost-seeded red clover establishment. Euphytica. 163:81-87.Interpretive Summary: In the colder parts of the United States, in late winter after disappearance of snow cover, red clover is often broadcast seeded into forage legume-depleted grass pastures to increase pasture forage quality.  This method of establishment is referred to as frost seeding.  However, in an estimated 30-40% of frost-seeded pastures in Wisconsin, USA the legumes fail to establish. Breeding for increased frost-seedability has not been attempted by plant breeders.  This study measured the genetic basis of frost-seedability.  Inheritance of frost-seeded seedling establishment traits is very low, suggesting that developing new varieties for this trait will be difficult.  This study will help red clover breeders to optimize breeding programs to achieve selection gains for this frost-seeded establishment.
                                Technical Abstract: In the colder parts of the United States, in late winter after disappearance of snow cover, red clover (Trifolium pratense) is often broadcast seeded into forage legume-depleted grass pastures to increase pasture forage quality.  This method of establishment is referred to as frost seeding.  However, in an estimated 30-40% of frost-seeded pastures in Wisconsin, USA the legumes fail to establish. In this study 40 red clover halfsib families from one breeding population and ten check populations were evaluated for spring frost-seeded establishment in three environments.  Seedling establishment counts and plant heights were measured 3 months after frost-seeded planting.  One of the three environments experienced a stand establishment failure.  Narrow sense heritability estimates on a halfsib family basis for stand counts and heights were h2 = 0.07 and 0.63 respectively.  Seedling counts were greatly affected by environment with micro-environmental effects contributing to low heritability.  Additive by environment genetic variance was large, again leading to low seedling count heritabilities.  These results suggest that it may be difficult to select for increased frost-seeded seedling establishment and that many test environments are needed to achieve genetic gains for this trait.  In comparison, seedling height was very heritable with relatively small additive by environment genetic variances.  The genetic correlation between seedling count and height using frost-seeded establishment was rA = 0.42.


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