Responses of Stock Seedlings to Heteroauxin Applied to the Soil

Influence of Indole‐3‐acetic Acid on the Respiration and Growth of Intact Wheat Seedlings

“…Smaller size was responsible for the decreased dry weight of the auxin-treated embryos. Wheat is probably an auxin-satiated plant (Greenfield, 1937;Marmer, 1937), so that upon addition of auxin its growth is inhibited by the toxic action of the chemical. But the rise in the upper 1 Received for publication February 16, 1938. curve shows that the intensity of respiration, per mg. 2 Bonner (1933) reported increased respiration of of embryo weight, was greatly increased as the hor-Avena coleoptile segments resulting from the addition of an auxin extract obtained from Rhizopus suinus but mone concentration was raised from 0.01 ppm.…”