Growth Regulation

During the last decade there has been extensive investigation in the field of plant physiology. Age-old questions have been partially ans­wered as a result of these signifi­cant studies. Perhaps, one of the more familiar results of these experiments is the weed killer (2-4-D), which is well known for its practical significance in horti­culture. Curious investigators have won­dered what causes fruit to set; what causes fruit to drop off the tree when ripening; what factors regulate plant...