What is the difference between plant hormones and plant growth regulators?
Posted on | September 27, 2009 |
Category: Growth Hormone Questions
Comments
One Response to “What is the difference between plant hormones and plant growth regulators?”
Leave a Reply
September 27th, 2009 @ 2:04 pm
Plant hormones are signal molecules that direct the activity of a cell. The term plant growth regulator is often used interchangeably.
PGR as defined by the FDACS (1st link)
"Any substance or mixture of substances intended, through physiological action, for accelerating or retarding the rate of growth or maturation, or for otherwise altering the behavior, of ornamental or crop plants or the produce thereof; but does not include substances intended as plant nutrients, trace elements, nutritional chemicals, plant inoculants, or soil amendments."
My understanding is that a PGRs are a number of plant hormones used with an economical intent in agriculture and horticulture.