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
 Crop Germplasm Research: College Station, TX
 close



    Research

                    Research Projects
                                    Publications
                                    Collaborations
                                    News
                People

                    Staff Listing
                                    CareersSearch small
                    Search
            
            ARS Home
                                About ARS
                                Contact Us




ARS Home Plains Area College Station, Texas Southern Plains Agricultural Research Center Crop Germplasm 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
                                            ZHANG, JINFA - New Mexico State Universityitem
                                            Percy, Richarditem
                                            McCarty, Jack
  Submitted to: Euphytica
                                    Publication Type: Peer Reviewed Journal
                                    Publication Acceptance Date: 3/1/2014
                                    Publication  Date: 3/18/2014
                                    Citation: Zhang, J., Percy, R.G., McCarty Jr, J.C. 2014. Introgression genetics and breeding between Upland and Pima cotton: A review. Euphytica. 198:1-12.Interpretive Summary: It is generally accepted that the genetic variability necessary to continue improving upland cotton (Gossypium hirsutum L.) has been significantly reduced by the breeding process.  One means of restoring genetic variability to upland cotton is to import useful variability from the G. barbadense species by means of hybridization.  This strategy has been pursued for over a century with varying levels of success.  Barriers to greater success have included hybrid breakdown, hybrid sterility and selective elimination of genes.  This article reviews successful transfer or creation of useful variation between the two species involving qualitatively inherited traits, chromosome substitutions, quantitatively inherited traits, and heterotic responses.  The article demonstrates the need and benefits of continued hybridization efforts between the two species.
                                Technical Abstract: The narrow genetic base of elite Upland cotton (Gossypium hirsutum L.) germplasm has been a significant impediment to sustained progress in the development of cotton cultivars to meet the needs of growers and industry in the recent years.  The prospect of widening the genetic base of Upland cotton by accessing the genetic diversity and fiber quality of Pima cotton (G. barbadense L.) has encouraged interspecific hybridization and introgression efforts for the past century.  However, success is limited due mainly to genetic barriers between the two species in the forms of divergent gene regulatory systems, accumulated gene mutations, gene order rearrangements and cryptic chromosomal structure differences that have resulted in hybrid breakdown, hybrid sterility and selective elimination of genes.  The objective of this paper is to provide a mini-review in interspecific hybridization between Upland and Pima cotton relevant to breeding under the following sections:  (1) qualitative genetics; (2) cytogenetic stocks; (3) quantitative genetics; (4) heterosis, and (5) introgression breeding.  Case studies of successful examples are provided.


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