Male Meiosis in Some Grasses of the Tribe Paniceae from North Eastern India

I Genus Paspalum

Abstract

Male-meiosis in 8 species of the genus Paspalum is studied. P. canarae (n=9) is investigated for the first time and it is the only diploid in the genus based on x=9. New cytological races have been detected in P. dialatatum (2n=60) and P. arbiculare (2n=60). The genus is suggested to be dibasic with x=9, 10. Desynapsis accom-panied by non-reduction is observed in P. conjugatum (2n=40), P. dilatatum (2n=60), P. longifolium (2n=40) and P. orbiculare (2n=60). All of them are suspected to be apomicts.