The leaves were sprayed with the chemical mutagen HAC at the differentgrowing period of rice. The results indicated: this chemical mutagen not only have thefunction to kill stamen, but also has the functions to induce rice into branch type, to makethe flower parts leafshaped and all spikelet fan-shaped. Moreover, this chemical mutagen caninduce the stamen primordium to dovelop into pistil and make pistil divide into two parts. Allthese morphological characteristics revealed the evolutionary trend which was resulted fromthe...
