Three amylase loci, Am-1, Am-2 , and Am-3, have been identified by electrophoresis (Gorman and Kiang , 1978) . The activity of amylase at Am-1 and Am-2 is very weak, and that at Am-3 is much str onger. Based on heat lability and chemical reaction, Reiss (1978) concluded Am-1 and Am- 2 represent α - amylase and Am-3 β-amylase .
Kiang, Y. T.; Gorman, M. B.; and Chiang, Y. C.
"Research Notes: Amylase and acid phosphatase genotypes of Glycine max, Glycine soja and Neonotonia wightii,"
Soybean Genetics Newsletter: Vol. 8
, Article 30.
Available at: http://lib.dr.iastate.edu/soybeangenetics/vol8/iss1/30