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
 Genetics and Sustainable Agriculture Research: Mississippi State, MS
 close



    Research

                    Research Projects
                                    Publications
                                    Collaborations
                                    News
                                    Software
                People

                    Staff Listing
                                    CareersSearch small
                    Search
            
            ARS Home
                                About ARS
                                Contact Us




ARS Home Southeast Area Mississippi State, Mississippi Crop Science Research Laboratory Genetics and Sustainable Agriculture 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
                                            McCarty, Jackitem
                                            WU, JIXIANG - MISSISSIPPI STATE UNIVitem
                                            Saha, Sukumaritem
                                            Jenkins, Johnieitem
                                            Hayes, Russell

                                                         - *Russ*
  Submitted to: Euphytica
                                    Publication Type: Peer Reviewed Journal
                                    Publication Acceptance Date: 5/10/2006
                                    Publication  Date: 12/1/2006
                                    Citation: McCarty Jr., J.C., Wu, J., Saha, S., Jenkins, J.N., Hayes, R.W. 2006. Effects of chromosome 5sh from Gossypium hirsutum L. on flower production in G. hirsutum L. Euphytica. 152:99-107.Interpretive Summary: Cotton yield is determined by the number of bolls that mature after fruiting structures flower. The first four to six weeks of flowering accounts for most of the lint yield produced from cotton.  In this study, we evaluated 13 cotton chromosome substitution lines (CS-B), TM-1, 3-79, and six cultivars for the number of flowers produced during the first four weeks of flowering. Results showed that chromosome substitution line, CS-B05sh, produced more flowers than TM-1 and 3-79 from July 10 to August 5. This suggested that when the short arm of chromosome 5 was substituted from 3-79 into TM-1 a positive genetic association with flower numbers was exhibited.  CS-B05sh produced comparable number of flowers to three cultivars, Deltapine 90, Phytogen 355, and Stoneville 474 and more flowers than cultivars, Sure Grow 747, Sure Grow 125, and Deltapine 5415. The genetic analysis indicated that both additive and dominance effects were important during the first four weeks of flowering.  The utilization of increases in flower numbers may lead to increases in cotton yield.
                                Technical Abstract: Cotton (Gossypium spp.) yield is determined by mature bolls that developed from squares and flowers. The first four to six weeks of flowering accounts for the majority of lint yield in upland cotton (G. hirsutum L.) for most cultivated areas of the southern USA cotton belt. In this study, we evaluated 13 cotton chromosome substitution lines (CS-B) and their chromosome specific-F2 hybrids, TM-1, 3-79, and six cultivars for the number of flowers produced during the first four weeks of flowering. Results showed that CS-B05sh produced more flowers than TM-1 and 3-79 from 10 July to 5 August. The results suggest that when the short arm of chromosome 5 was substituted from 3-79 (G. barbadense L.) into TM-1 (G. hirsutum) a positive genetic association with flower numbers during this flowering period was exhibited. CS-B05sh had comparable flower numbers with three cultivars, Deltapine 90, Phytogen 355, and Stoneville 474 and more flowers than, Sure Grow 747, Sure Grow 125, and Deltapine 5415. Different patterns for additive and dominance effects on cumulative flowers were observed across weeks of flowering. Dominance effects were more apparent during the early part of the flowering period while additive effects were more apparent towards the end of the flowering period.


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