Nuclear DNA amounts in Macaronesian Angiosperms Jan Suda Department of Botany, Faculty of Science, Charles University Institute of Botany, Academy of Sciences of the Czech Republic

B a s i c d a t a

M a c a r o n e s i a n f l o r a Total number of species: ca 2 500 Endemic species: ca 600 Endemic genera: ca 31 - high proportion of woody life-forms - many taxa succulent - low frequency of geophytes, annuals - recent diversification (adaptive radiation, vicarization, inter-island differentiation)

F C M a s s a y s

241 species (40 % of the endemic flora) R e s u l t s 241 species (40 % of the endemic flora)

C - v a l u e s c o m p a r i s o n very small (< 1.4 pg) intermediate (3.51 - 14 pg) large (14.01 - 35 pg) very large (> 35.01 pg) very small small intermediate

C - v a l u e s c o m p a r i s o n Endemic genera Database Macaronesia Min 0.17 0.19 Max 127.4 9.52 Range 750 50 Mean 6.34 1.97 Median 2.9 1.02 Mode 0.55 0.51 n 3478 241 Endemic genera Total: 31 Analyzed: 23 (74 %) Assumed: +4 (87%) Very small C-values: 19 (83%) Assumed: +2 (78%) Small C-values: 1 (4%) Assumed: +1 (7%) Intermediate C-values: 3 (13%) Assumed: +1 (15%)

Correlation with environmental conditions Altitude Rainfall Temperature Argyranthemum (n=7) - - + Silene (n=4) (-) - + Micromeria (n=4) (-) - + Crambe (n=4) + + - Sonchus (n=3) + + - 13.69 14.41 14.14 14.28 14.18 13.94 13.77

W h e r e f i n d m o r e . . . Suda J., Kyncl T. & Freiová R. (2003): Nuclear DNA amounts in Macaronesian Angiosperms. – Annals of Botany 92/1: 153-164. Suda J. & Kyncl T. (xxxx): Nuclear DNA amounts in Macaronesian Angiosperms - forty percent of the endemic flora finished (in prep.) Suda J. (xxxx): Macaronesian angiosperms: selection towards very small genomes (in prep.) Future intentions: Comparative study of plant C-value variation in Havaiian and Galapagos archipelagos