Show nature toes the mark in control laboratory night or day sunlight or darkness temperature control within a fraction of a degree and plant life that can be put to work or put to bed at will all are under the con arol of scientists in a specially de signed chamber at the new york state college of agriculture the exactness of control is probably the greatest yet achieved in any laboratory and the aim is to unravel the mystery of plant vigor the quality that makes any one stock superior to others either in yield disease resistance or in other ways in plant breeding it is known that when two inbred or purebred strains are crossed the result a hybrid may be astonishingly better than the parent stock this is referred to as hybrid vigor why and how this happens are subjects of study by plant physiologists |