mitomycin c/ダイズ

The frequency of mitomycin C induced somatic crossing over in variety L65-1237 of Glycine max is shown to be dependent upon the (physiological) age of the seed during post germination period. Effect of mitomycin C during the first four hr of germination is significantly lower than during later

Glycine max (soybean) is one angiosperm which lends itself to the study of somatic crossing over. This is made possible because some varieties have gene combinations Y(11)Y(11), Y(11)y(11) and y(11)y(11) in the segregating populations from Y(11)y(11) plants. The gene in question is responsible for

Variety T219 of Glycine max L. has spontaneous yellow, dark green and double (yellow-dark green) spots on the leaves of plants of genotype Y 11 y 11 but no such spots are found on leaves of Y 11 Y 11 or y11y11 plants. It was suggested (Vig and Paddock, 1968) that the double spots result from somatic

Three types of spots can be identified on the leaves of heterozygous light green, Y/y, Glycine max (L.) Merrill: dark green (D) and aurea (A) single spots (resembling the phenotypes of the homozygotes) and double (Db) spots consisting of adjacent D and A tissue. X-irradiation increased the frequency

The frequency of somatic crossing over in Glycine max has been significantly increased by soaking the dry seeds in aqueous solutions of 0.0025, 0.005 and 0.01% colchicine. This increase was quite consistent for several treatments involving time × concentration interaction as well as in cases where