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Adhikari_Jeevan_Browne _Award_Presentation_2015

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Jeevan Adhikari

This document summarizes research into the effects of exotic genotypes on fiber quality traits in upland cotton. Three exotic cotton genotypes (MDN063, MDN101, and MDN257) were selected and crossed with elite domestic cotton varieties. Resulting populations were phenotyped for fiber traits and genotyped to identify trait-associated markers. Several markers were identified as associated with fiber quality traits like uniformity index, micronaire, elongation, strength, and short fiber content. The identified markers and quantitative trait loci can enable marker-assisted selection and breeding of cotton with improved fiber quality.

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Effects of Exotic Genotypes and Jeevan Adhikari jeevan@uga.edu swicofil.comwikipedia.org cottoninc.com Genetic Backgrounds on Fiber Quality Traits In Upland Cotton
Fiber quality traits wattention.com swicofil.com Fiber length Fiber strengthFiber fineness uster.com Fiber uniformity index Fiber elongation Short fiber content % www.cirad.fr www.independentstitch.typepad.com
1 0 84 0888 92 96 00 No improvement Years FiberLength(inches) cotton.org
Reduced Genetic Diversity Polyploidy Migration Selection
Variation
Opportunities Wide diversity in the wild crops.com usda.org cottoninc.com
Plant Materials PD94042Acala Maxxa DES56PM HS 200 MDN063 MDN257 MDN101
Genotype Trait Ranking Additive genetic variance in crosses with DP16 Yield Lint% Bollsize Micronaire 2.5%Span length Elongation Strength Height MDN063 Micronaire 1 (of 79) 0 -- ++ ++ -- ++ -- 0 MDN101 Selection Index 1 (of 79) ++ ++ 0 0 ++ 0 + ++ MDN257 Length 1 (of 79) 0 -- -- - ++ -- 0 0 Why these three genotypes? McCarty and Jenkins, 1993
Exotic Parent Elite Parent F1 Progeny F2 Progeny F3 Progeny DNA extraction Phenotype scoring Population Development
1. MDN101 PD94042 2. MDN101 DES56 3. MDN101 PMHS200 4. MDN101 Acala Maxxa 5. MDN063 DES56 6. MDN063 Acala Maxxa 7. MDN257 DES56 8. MDN257 Acala Maxxa Exotic Parent Elite Parent Results
Population Trait Associated Marker R2 P Value a Favorable allele from MDN063 DES56 UI NAU5120 0.14 0.0004 MDN063 MDN101 Acala Maxxa MIC CIR141 0.12 0.0003 MDN101 MDN101 Acala Maxxa UI NAU5120 0.13 0.0014 MDN101 MDN101 DES56 UHM DPL0270 0.33 0.004 MDN101 MDN101 DES56 ELO JESPR101 0.43 0.0006 MDN101 MDN101 DES56 UI JESPR101 0.34 0.003 MDN101 MDN101 DES56 STR NAU3820 0.1 0.0017 MDN101 MDN101 DES56 ELO NAU5120 0.47 0.0003 MDN101 MDN101 DES56 SFC NAU5120 0.37 0.002 MDN101 MDN101 DES56 UI NAU5120 0.46 0.0003 MDN101 MDN101 DES56 ELO NAU5465 0.4 0.002 MDN101 MDN101 PMHS200 MIC DPL0156 0.16 0.002 MDN101 MDN101 PMHS200 SFC DPL0378 0.19 0.002 MDN101 MDN257 DES56 UHM DPL0378 0.18 0.0003 MDN257 MDN257 DES56 UHM JESPR37 0.19 0.0002 MDN257 Results
Summary and Prospectus Identified associations related to important fiber quality traits Marker assisted selection and breeding of cotton Identification of valuable QTLs Validation of QTLs

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Adhikari_Jeevan_Browne _Award_Presentation_2015

  • 1. Effects of Exotic Genotypes and Jeevan Adhikari jeevan@uga.edu swicofil.comwikipedia.org cottoninc.com Genetic Backgrounds on Fiber Quality Traits In Upland Cotton
  • 2. Fiber quality traits wattention.com swicofil.com Fiber length Fiber strengthFiber fineness uster.com Fiber uniformity index Fiber elongation Short fiber content % www.cirad.fr www.independentstitch.typepad.com
  • 3. 1 0 84 0888 92 96 00 No improvement Years FiberLength(inches) cotton.org
  • 6. Opportunities Wide diversity in the wild crops.com usda.org cottoninc.com
  • 7. Plant Materials PD94042Acala Maxxa DES56PM HS 200 MDN063 MDN257 MDN101
  • 8. Genotype Trait Ranking Additive genetic variance in crosses with DP16 Yield Lint% Bollsize Micronaire 2.5%Span length Elongation Strength Height MDN063 Micronaire 1 (of 79) 0 -- ++ ++ -- ++ -- 0 MDN101 Selection Index 1 (of 79) ++ ++ 0 0 ++ 0 + ++ MDN257 Length 1 (of 79) 0 -- -- - ++ -- 0 0 Why these three genotypes? McCarty and Jenkins, 1993
  • 9. Exotic Parent Elite Parent F1 Progeny F2 Progeny F3 Progeny DNA extraction Phenotype scoring Population Development
  • 10. 1. MDN101 PD94042 2. MDN101 DES56 3. MDN101 PMHS200 4. MDN101 Acala Maxxa 5. MDN063 DES56 6. MDN063 Acala Maxxa 7. MDN257 DES56 8. MDN257 Acala Maxxa Exotic Parent Elite Parent Results
  • 11. Population Trait Associated Marker R2 P Value a Favorable allele from MDN063 DES56 UI NAU5120 0.14 0.0004 MDN063 MDN101 Acala Maxxa MIC CIR141 0.12 0.0003 MDN101 MDN101 Acala Maxxa UI NAU5120 0.13 0.0014 MDN101 MDN101 DES56 UHM DPL0270 0.33 0.004 MDN101 MDN101 DES56 ELO JESPR101 0.43 0.0006 MDN101 MDN101 DES56 UI JESPR101 0.34 0.003 MDN101 MDN101 DES56 STR NAU3820 0.1 0.0017 MDN101 MDN101 DES56 ELO NAU5120 0.47 0.0003 MDN101 MDN101 DES56 SFC NAU5120 0.37 0.002 MDN101 MDN101 DES56 UI NAU5120 0.46 0.0003 MDN101 MDN101 DES56 ELO NAU5465 0.4 0.002 MDN101 MDN101 PMHS200 MIC DPL0156 0.16 0.002 MDN101 MDN101 PMHS200 SFC DPL0378 0.19 0.002 MDN101 MDN257 DES56 UHM DPL0378 0.18 0.0003 MDN257 MDN257 DES56 UHM JESPR37 0.19 0.0002 MDN257 Results
  • 12. Summary and Prospectus Identified associations related to important fiber quality traits Marker assisted selection and breeding of cotton Identification of valuable QTLs Validation of QTLs