A cytokinin-sensitive mutant of moss, Physcomitrella patens, defective in chloroplast division. - Abel,W..O..; Kenbel,W..; Koop,H.-U..; Marienfeld,J..R..; Quader,H..; Reski,R..; Schnepf,E..; Sporlein,B.. (Protoplasma, 1989)