RELATIONS OF GERMINATING SOY BEANS TO TEMPERATURE AND LENGTH OF INCUBATION TIME

Abstract

Soja max seeds of the Black Eyebrow var. germinated with equal rapidity at 33[degree] and 36.5[degree] C, more slowly at 28.5[degree] and 40[degree], and slower still at 24.5[degree], as measured in three ways. For Minsoy, Manchu, and Tokyo soybeans 33[degree] was more favorable than 36.5[degree] or 28.5[degree]. The times necessary for germination of individual seeds at each of the 5 constant temps. had frequency distributions similar to that of the Gaussian probability curve, and the values for the modes in the Black Eyebrow var. were unchanged by temperature. The removal of germinated seeds at regular intervals during germination of a seed sample is interpreted as a selective process which sorts seedlings into different physiological classes.