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Genetica

, Volume 143, Issue 6, pp 671–680 | Cite as

Additive-dominance genetic model analyses for late-maturity alpha-amylase activity in a bread wheat factorial crossing population

  • Golam Rasul
  • Karl D. Glover
  • Padmanaban G. Krishnan
  • Jixiang Wu
  • William A. Berzonsky
  • Amir M. H. Ibrahim
Article

Abstract

Elevated level of late maturity α-amylase activity (LMAA) can result in low falling number scores, reduced grain quality, and downgrade of wheat (Triticum aestivum L.) class. A mating population was developed by crossing parents with different levels of LMAA. The F2 and F3 hybrids and their parents were evaluated for LMAA, and data were analyzed using the R software package ‘qgtools’ integrated with an additive-dominance genetic model and a mixed linear model approach. Simulated results showed high testing powers for additive and additive × environment variances, and comparatively low powers for dominance and dominance × environment variances. All variance components and their proportions to the phenotypic variance for the parents and hybrids were significant except for the dominance × environment variance. The estimated narrow-sense heritability and broad-sense heritability for LMAA were 14 and 54 %, respectively. High significant negative additive effects for parents suggest that spring wheat cultivars ‘Lancer’ and ‘Chester’ can serve as good general combiners, and that ‘Kinsman’ and ‘Seri-82’ had negative specific combining ability in some hybrids despite of their own significant positive additive effects, suggesting they can be used as parents to reduce LMAA levels. Seri-82 showed very good general combining ability effect when used as a male parent, indicating the importance of reciprocal effects. High significant negative dominance effects and high-parent heterosis for hybrids demonstrated that the specific hybrid combinations; Chester × Kinsman, ‘Lerma52’ × Lancer, Lerma52 × ‘LoSprout’ and ‘Janz’ × Seri-82 could be generated to produce cultivars with significantly reduced LMAA level.

Keywords

Late-maturity alpha-amylase Bread wheat Additive-dominance Heterosis General combining ability Specific combining ability 

Notes

Acknowledgments

This research was a contribution of the Department of Plant Science, South Dakota State University. The first author was supported by Monsanto through the Monsanto Fellowships in Plant Breeding program. This study was also partially supported by USDA-NIFA Hatch projects 1005459 and SD00H492-13. The authors would like to show their gratitude to Jonathan Kleinjan, the Spring Wheat Breeding crews, and fellow graduate students for their assistance with field trials and screening procedures.

Compliance with ethical standards

Conflict of interest

The authors declare that they have no conflict of interest.

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Copyright information

© Springer International Publishing Switzerland 2015

Authors and Affiliations

  • Golam Rasul
    • 1
  • Karl D. Glover
    • 1
  • Padmanaban G. Krishnan
    • 2
  • Jixiang Wu
    • 1
  • William A. Berzonsky
    • 3
  • Amir M. H. Ibrahim
    • 4
  1. 1.Department of Plant ScienceSouth Dakota State UniversityBrookingsUSA
  2. 2.Department of Health and Nutritional SciencesSouth Dakota State UniversityBrookingsUSA
  3. 3.Bayer CropScience LPLincolnUSA
  4. 4.Department of Soil and Crop SciencesTexas A&M UniversityCollege StationUSA

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