A rice mutant (Oryza sativa L. Nongken 58S) 'photoperiodsensitive male-sterile rice' (PGMR) is sterile under long day-length (LD), but fertile in short days-length (SD). Phytochrome (Phy) has proved to be the photorec...
A comparative study of microsporogenesis in male-sterile and male-fertile grain amaranth was conducted using electron-microscopy.The onset of microsporogenesis breakdown in male-sterile is at the mononuclear pollen st...