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
 Plant Stress and Germplasm Development Research: Lubbock, TX
 close



    Research

                    Research Projects
                                    Publications
                                    Collaborations
                                    News
                People

                    Staff Listing
                                    Careers


        


                    Projects
                        NP 301Search small
                    Search
            
            ARS Home
                                About ARS
                                Contact Us




ARS Home Plains Area Lubbock, Texas Cropping Systems Research Laboratory Plant Stress and Germplasm Development 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
                                            WANG, CONGLI - Northeast Institute Of Geography And Agronomy, Casitem
                                            Ulloa, Mauricioitem
                                            ROBERTS, PHILIP - University Of California
  Submitted to: National Cotton Council Beltwide Cotton Conference
                                    Publication Type: Abstract Only
                                    Publication Acceptance Date: 1/8/2014
                                    Publication  Date: 5/15/2014
                                    Citation: Wang, C., Ulloa, M., Roberts, P.A. 2014. A major locus for fusarium wilt race 4 resistance identified in Gossypium Hirsutum Acala NemX using an interspecific progeny with G barbadense [abstract]. National Cotton Council Beltwide Cotton Conference, January 6-8, 2014, New Orleans, Lousiana. No. 15614.Interpretive Summary:
                                Technical Abstract: Fusarium wilt, caused by the soil-borne pathogen Fusarium oxysporum f. sp. vasinfectum race 4 (FOV4), is a vascular disease of cotton (Gossypium spp.) which causes plant injury and yield loss in most Pima (G. barbadense L.) and Acala or Upland (G. hirsutum L.) cultivars without co-infection with root-knot nematode (Meloidogyne incognita). QTL analysis on an interspecific progeny from a cross of Pima S7 × Acala NemX revealed a major locus conferring resistance to FOV4 in Acala NemX. Two SSR markers (BNL2650_196 and CIR112_226) were closely linked to the resistance locus, which accounted for 18 percent (LOD greater 3.5) to 40 percent (LOD greater 9.70) of resistance response of FOV4 foliar disease index at 10 and 20 days after inoculation (DAI), and up to 35 percent for the ratio of vascular discoloration/plant height (VDL/PH) using interval mapping analysis. Additional minor QTLs contributing to the resistance were identified at early DAI (10 and 13) on chromosomes 8, 11, and 21. Positive alleles of these minor QTLs were contributed by either Pima S-7 or Acala NemX. Genetic linkage analysis based on this progeny suggests that the major resistance locus may be located on chromosome 17. BNL2650 and CIR112 alleles were linked to previously reported SSRs CIR180 and BNL0834 (BNL0834 also was linked to resistance locus Fov4 in Pima S6). The BNL2650 and CIR112 SSR markers provide additional valuable resources for incorporating FOV4 resistance into elite germplasm using marker-assisted selection. In addition, some recombinant inbred lines from the Pima S7 x Acala NemX population with resistance to both root-knot nematode and Fusarium wilt races 1 and 4 provide multiple resistance sources for breeding.


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