Biochemical Differences between Sexes in Green Plants.

The preceding paper is the second in a series on the biochemical differences between the sexes in Mucors. The present article gives the preliminary results of abiochemical study of differences between the sexes in green plants. The technique employed is similar to that used with the Mucors except that green leaf tissue was used in place of the fungous mycelium and, except for the alcoholic extracts, the material was ground with sand. Table 1 shows some of the tests-with leaves of male and female plants of Rhamnus. The plants of this, as of other species, have been tested in pairs. There were six pairs, but, since the female in pair V was also used as the female in pair VI, only 11 individuals of the species were tested.