Glyphosate as a gametocide

摘要

Glyphosate is used as a highly selective gametocide on plants containing in their genome a first DNA molecule which confers constitutive glyphosate tolerance and a second DNA molecule which inhibits said glyphosate tolerance specifically in male reproductive tissue. Plants containing the first and second DNA molecules are rendered male sterile by exposure to glyphosate. The methods and compositions of the invention are advantageous for use in the generation of hybrid seed, for restricting outcrossing, and for prolonging flower life.