Heterosis plays an important role in development of new crop varieties with high-yielding, good-quality and biotic/abiotic stresses while male sterile line development is the key step to determine the success of heterosis utilization. A male sterile mutant,M207 A was created in proso millet(Panicum miliaceum,2n=4x=36)for the first time using ~(60)Co-γ ray mutagenesis. Fertility identification and genetic analysis were carried out to charac-terize the mutant for its possible use for heterosis utilization in ...