FILE- This May 1, 2018, file photo shows Merck corporate headquarters in Kenilworth, N.J. Pharmaceutical giant Merck will close its plant in Northumberland County, Pennsylvania. According to a ...

Plant hormones, also known as phytohormones, are chemicals that regulate plant cell processes. They are signal molecules produced within the plant functioning in extremely low concentrations ...

Plant breeding is the production of plants by selective mating or hybridization. It is the traditional mechanism for producing new varieties of plants for horticulture and agriculture.