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Crop Science Abstract -

Two Major Genes for Time of Flowering and Maturity in Soybeans1


This article in CS

  1. Vol. 11 No. 2, p. 242-244
    Received: Aug 15, 1970

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  1. R. L. Bernard2



Two independent gene pairs affecting time of flowering and maturity in soybeans (Glycine max (L.) Merr.) were identified and studied in a common genetic background developed by backcrossing to the commercial variety ‘Clark.’ E1, a gene for lateness linked to pubescence color (T t), was transferred from strain T175, and e2, a gene for earliness, from T245. The late allele at each locus was partially dominant in most combinations. Flowering and maturity dates for the homozygotes based on 2 years data at Urbana, Ill., are summarized below as number of days earlier (−) or later (+) than Clark.

Clark e1 E2 0 0
Clark-E1 E1 E2 +23 +18
Clark-e2 e1 e2 − 7 −14
Clark-E1 e2 E1 E2 + 9 + 1
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