, Volume 88, Issue 1, pp 61–67 | Cite as

Inheritance of late maturity α-amylase in wheat

  • Kolumbina Mrva
  • Daryl J. Mares


Two wheat cultivars that consistently show high levels of grain α-amylase at harvest ripeness, in the absence of preharvest sprouting, were crossed with a control, low α-amylase cultivar, and F1, F2 and BC1 populations were developed. Grain of these populations was analysed for α-amylase activity at harvest ripeness. Distribution and segregation patterns were consistent with control at a single locus with high α-amylase the recessive allele. This mode of inheritance would make it extremely difficult to differentiate homozygous low α-amylase lines from heterozygotes (low α-amylase phenotype but carriers of high α-amylase) and has important implications for wheat breeders. High α-amylase, termed late maturity α-amylase, was not linked with the awned inhibitor gene, B2, located on the long arm of chromsome 6B.

Key words

inheritance late maturity α-amylase wheat Triticum aestivum 


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Copyright information

© Kluwer Academic Publishers 1996

Authors and Affiliations

  • Kolumbina Mrva
    • 1
  • Daryl J. Mares
    • 1
  1. 1.Plant Breeding InstituteUniversity of SydneyNarrabriAustralia

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