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Euphytica

, 215:81 | Cite as

Genetic improvement of naked-tufted seed mutants in upland cotton (Gossypium hirsutum L.)

  • Bralie R. Hendon
  • Efrem Bechere
  • Travis W. Witt
  • Brendan R. Kelly
  • Deepika Mishra
  • Dick L. AuldEmail author
Article
  • 31 Downloads

Abstract

This research evaluated the potential for using sexual crosses for genetic improvement of fiber yield, lint percent, AFIS fiber quality, and fiber initiation of two naked-tufted mutants of cotton (Gossypium hirsutum L.). The naked tufted lines were crossed with ten fuzzy breeding lines to generate 10 F2 populations. The F2 distributions were tested with Chi Square for Goodness of Fit to two monogenic and two digenetic segregation ratios. Five of the six F2 populations made with Atlas-NS-129 segregated as either a single dominant gene (3 Naked-tufted: 1 fuzzy) or as two dominant genes (9 Naked-tufted: 7 fuzzy). Three of the four F2 populations made with SC 9023-ns-57 segregated as either a single recessive gene (3 Fuzzy: 1 naked-tufted) or as duplicate recessive genes (9 Fuzzy: 7 naked-tufted). However, the F2 populations when crossed with the Fuzzy line of Tejas 48 showed a reversal of dominance. The F2 population of Atlas-NS-129 X Tejas 48 fit a 9 Fuzzy: 7 naked tufted ratio expected of two recessive genes. The F2 population of the cross of SC 9023-ns X Tejas 48 fit a 3 Naked-tufted: 1 fuzzy ratio expected of a single dominant gene. Additional studies will be necessary to fully determine the number of gene(s) and the expected phenotypic ratios of individual naked-tufted mutants in crosses with fuzzy seeded breeding lines. Eight of the F2 and F3 populations were also evaluated for lint yield, lint percent and AFIS fiber quality traits. The F2 and F3 populations of the cross of Atlas-NS-129 X Holland 338 produced the highest average lint yields (1089 kg ha−1) as well as excellent fiber quality. These data indicate that it may be possible to develop relatively high yielding naked tufted cultivars by crossing these mutant lines with elite higher yielding breeding lines.

Keywords

Naked-tufted seed coat Chemical mutagenesis Genetic inheritance Fuzz fibers Lint fibers 

Notes

Acknowledgements

This research was supported by funding by the USDA-International Cotton Research Center; Cotton Incorporated-Core Program; Cotton Incorporated-Texas State Support Committee; Texas Department of Agriculture-Food and Fiber Research Program; the Rockwell Endowed Chair in the Department of Plant and Soil Science, Texas Tech University (TTU); the Office of Research Commercialization (TTU) and the Fiber Biopolymer Research Institute (TTU). Dr. Steve Oswalt, Mr. Jacob Rieff, Mr. Corey Thompson, and numerous undergraduate students provide technical support and long hours of labor to support this research. Mention of trade names or commercial products in this publication is solely for the purpose of providing specific information and does not imply recommendation or endorsement by the U.S. Department of Agriculture. USDA is an equal opportunity provider and employee.

Compliance with ethical standards

Conflict of interest

The naked-tufted mutant lines identified in this study are protected by U.S. Patent Application No: 9,877,445 (January 30, 2018) (Auld and Bechere 2018). Consequently, distribution of the lines identified in this study will require the permission of the Office of Research Commercialization at Texas Tech University.

References

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Copyright information

© Springer Nature B.V. 2019

Authors and Affiliations

  1. 1.Biology DepartmentUniversity of the SouthwestHobbsUSA
  2. 2.Crop Genetics Research UnitUSDA-ARSStonevilleUSA
  3. 3.Grazinglands Research LaboratoryUSDA-ARSEl RenoUSA
  4. 4.Texas A&M AgriLife Science and the Plant and Soil Science DepartmentTexas Tech UniversityLubbockUSA
  5. 5.Arvegenix, Inc.St. LouisUSA
  6. 6.Plant and Soil Science DepartmentTexas Tech UniversityLubbockUSA
  7. 7.Rockwell Endowed Chair (Emeritus)Texas Tech UniversityLubbockUSA

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