In 1963, 16 wild soybeans (Glycine soja Sieb. and Zucc.) and 4 semicultivated soybeans (Glycine max (L . ) Merr.) were collected from localities of different latitude in China (Table 1). They were tested under different photoperiods for their photoperiodic response. The experimental results are shown in Table 2. From the experimental data in Table 2 we can clearly see that wild soybeans collected from Yangtze River Valley (30°18' - 31°54') and south region of China (26°56') are typical short-day plants.

As part of a genetic study of the relationships within the genus Glycine subgenus Soja we wish to report some observations on the inheritance of traits in crosses of G.max x G.soja and G.max x semi-wild ("gracilis") lines. The data to be discussed are contained in Table 1; the discussion will proceed on a locus by locus basis. Fr locus: Segregation of non-fluorescing root phenotypes was observed in two crosses: 'Hark' (Fr) x PI 153,292 (a non-fluorescent semi-wild line) and 'Minsoy' (fr) x PI 342,6228 (a fluorescent G.soja).

Pull et al. (1978b) screened 102 lines of soybeans [Glycine max (L.) Merr.] and found 5 lines lacking the 120,000 dalton seed lectin ('Columbia', 'Norredo', 'Sooty', 'T102', and 'Wilson-5'). The amount of soybean lectin (SBL) per g defatted meal and the amount of SBL content in soybean protein for the 102 lines tested also was published by Pull et al. (1978a). Orf et al. (1978) demonstrated, using polyacrylamide gel electrophoresis, that the presence of SBL is controlled by a single dominant gene designated Le. The homozygous recessive le le results in the lack of SBL.

Soybean lectin (SBL), a glycoprotein found in seeds, is capable of agglutinating red blood cells. SBL has a molecular weight of 120,000 daltons and is composed of four subunits of 30,000 daltons (Lis and Sharon, 1973). SBL protein comprises 0.5-5% of the total protein in defatted meal, depending upon the soybean variety used (Pull et al., 1978) .