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- Uniform Soybean Tests, Southern States

Title:   Author  item
                                            Ulloa, Mauricioitem
                                            Meredith Jr, Williamitem
                                            Percy, Richarditem
                                            MOSER, H - UNIV OF ARIZONA
  Submitted to: Crop Science Society Of America
                                    Publication Type: Abstract Only
                                    Publication Acceptance Date: 11/4/1999
                                    Publication  Date: N/A
                                    Citation: ULLOA, M., MEREDITH JR, W.R., PERCY, R.G., MOSER, H. GENETIC VARIABILITY WITHIN IMPROVED GERMPLASM OF GOSSYPIUM HIRSUTUM AND    G. BARBADENSE COTTONS. CROP SCIENCE SOCIETY OF AMERICA. 1999.Interpretive Summary: Adding acceptance date and publication date.  daf  10/20/03
                                Technical Abstract: The lack of genetic diversity in the cotton crop may be recognized as a potential threat to genetic vulnerability and to sustaining high yields. Ten Gossypium hirsutum and ten G. Barbadense improved germplasm have been assayed with 217 molecular markers (SR).  Marker percent difference within G. Hirsutum species ranged from 10 up to 40%.  However, the diversity  accounted by region, e.g., within Acala and within Delta cottons, was approximately 18%.  Marker percent difference within G. Barbadense ranged from 8 up to 45%.  Within the Pima PS series (1, 4, 6, 7, & 32), the lowest percent difference was between PS4 and PS32, and was around 37%.  Marker percent difference confirms the existing narrow genetic variability previously reported from traditional genetic studies within G. Hirsutum species, and the same trend is observed for the G. Barbadense species.  The necessity of introgression of favorable alleles into a wider range of  germplasm exists to ensure genetic diversity.


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