Eranthis lobulata

Notes.

The somatic and basic chromosome numbers in E. lobulata, endemic to China, are 2 n = 16 and x = 8, respectively (Table 1; Fig. 2A). Five pairs of chromosomes (I-V) are metacentric, and three pairs (VI-VIII) are submetacentric, subtelocentric and acrocentric (Tables 2 and 3; Fig. 3). A pair of submetacentric chromosomes exhibits a secondary constriction. We also found a single small B chromosome in some cells. These Bs are metacentric, about 2.5 μm long. The karyotype formula of E. lobulata is 2 n = 2 x = 16 = 10m + 2smsat + 2st + 2t + 0-1B.

Notes: CL - chromosome length, mean value ± standard deviation; r - arm ratio, mean value ± standard deviation; CI - centromeric index; RL - relative chromosome length; m - metacentric chromosome; sm - submetacentric chromosome; st - subtelocentric chromosome; t - acrocentric chromosome; sat - chromosome showing secondary constriction.