Research Notes : United States : The genus Glycine subgenus Glycine germplasm collection

The genus Glycine as currently delimited is divided into two subgenera Glycine and Soja. The subgenus Soja includes the soybean, G. max, and its annual wild counterpart, G. soja. The subgenus Glycine comprises seven wild perennial species

Research Notes: An allelism study of the inheritance of the lack of soybean lectin in five soybeain lines

Pull et al. (1978) found five soybean lines ( \u27Columbia\u27 , \u27Norredo\u27, \u27Sooty\u27, Tl02 and \u27Wilson-5\u27) lacking the 120,000 dalton seed lectin, also called soybean lectin (SB1) . Orf et al . (1978) established that the lack of SBL is inherited as a simple recessive, le le . The homozygous dominant (Le Le) and heterozygous (Le le) condition result in the presence of SBL

Research Notes: Linkage tests between Sp1 and Ti seed proteins

Polyacrylamide gel electrophoresis has been used to study the Ti and Sp1 seed proteins of the soybean. The Ti protein has been identified as the Kunitz soybean trypsin inhibitor or SBTI-A2 (Kunitz, 1945; Rackis et al., 1962; Singh, Wilson and Hadley, 1969). The three fonns of SBTI-A2 designated as Ti1, Ti2 and Ti3 are electrophoretically distinguishable from one another by their different Rf values of 0.79, 0.75 and 0.83 (Rf= mobility relative to the dye front in a 10% polyacrylamide gel anodic system using a pH 8.3 Tris-glycine buffer) respectively

Research Notes : United States : Hybridization in genus Glycine subgenus Glycine

Since the publication of Newell and Hymowitz (1983), we have obtained a considerable number of new intra-and interspecific hybrids in subgenus Glycine. Parents in the hybridization programs were selected based upon their differences in morphology, chromosome number, and the area of origin. These hybrids shown below are being studied cytogenetically