Development of new sources of cytoplasmic male-sterile lines in rice

Two male-sterile lines, KalashreeA and PadminiA, with a Miz.21 cytoplasm source were developed through indica/indica hybridization followed by repeated backcrossing with their respective recurrent male parents (Kalashree and Padmini) up to the BC₆ generation. These two cytoplasmic male-sterile lines are suitable for use in the development of hybrids for lowland situations owing to their intermediate to semi-tall stature, late flowering duration, good grain quality and easy fertility restoration ability.