Inheritance of Lipoxygenase-1 Activity in Soybean Seeds1
- D. F. Hildebrand and
- T. Hymowitz2
The objectives of this study were to determine the mode of inheritance of lipoxygenase-1 (L-I) activity in soybean [Glycine max (L.) Merr.] seeds and to investigate possible linkage of the L-1 locus with the Le (seed lectin), Spl (β-amylase), and W1 (flower color) loci. The inheritance of L-1 in soybean seeds was determined by crossing the two genotypes that lack L-l, Plant Introduction (P.I.) 133226 and P.I. 408251, with soybean cultivars (‘Williams,’ ‘Forrest,’ ‘Columbia,’ and ‘Altona’) having normal L-1 activity. All F1 seeds had L-1 activity. F2 seeds resulting from these crosses segregated 3:1 indicating that the presence of L-1 is inherited as a simple dominant. F3 seeds from heterozygous F2 plants also segregated 3:1. Reciprocal crosses gave the same results indicating no maternal or cytoplasmic effects on the inheritance of L-1 activity. The genesymbol Lx1 is assigned to the allele coding for the presence of L-1 protein and lx for the lack a detectable L-1 protein. Linkage studies indicate that the Lx1 locus is not linked to the loci coding for W, Le, or Sp1.Please view the pdf by using the Full Text (PDF) link under 'View' to the left.
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