Cytological studies in Ranunculaceae

XI. The karyotypes of Nigella damascena and some other species

Abstract

1. The karyotypes of six species and one variety can be represented as follows:
Nigella damascena K(2n)=12=4A₁^m+6^csA₂^m+2^tB^st
N. hispanica K(2n)=12=4A₁^m+6^csA₂^m+2B^st
Ranunculus acris var. nipponicus K(2n)=14=4A^m+2B^m+2C^st+2D^st+2E₁^st+2_tE₂^st
R. gramineus K(2n)=16=8A^m+2B^st+2C^st+4D^st
Anemone Tagawae K(2n)=14=12A^m+2^tB^st
A. sikokiana K(2n)=14=10A₁^m+2^tA₂^m+2^tB^st
Pulsatilla dahurica K(2n)=16=10A^m+2B₁^st+2^tB₂^st+2^tC^st
2. The basikaryotypes found in Anemone can be classified into two large groups, one of which consists of two small groups slightly differing from each other (Fig. 6, A, B; C). The A-basikaryotype in Fig. 6 is quite equal to the basikaryotype of Hepatica, while the C is slightly differed from that of Pulsatilla (Ibid. D).