INHERITANCE OF A SOYBEAN FLOWERING RESPONSE TO FLUORESCENT-DAYLENGTH CONDITIONS

Abstract

The inheritance of flowering time was studied in the short-day soybean, Glycine max (L.) Merr., under long-day conditions in the greenhouse using natural day length extended to 20 hours with cool-white fluorescent light. A single, major gene with two alleles was found to control the flowering response. The dominant allele which gave a fluorescent-sensitive response of delayed flowering also resulted in later field maturity whereas the recessive allele which gave an insensitive response resulted in earlier maturity. The maturity symbols E 3 and e 3 are proposed for these alleles. Isolines have been developed.