TABLE 3.

The number, relative abundance, relative density, and GC content of mono‐ to pentanucleotide SSRs in the eight chloroplast genomes of Cyatheaceae

Repeat type	Characteristics of SSR	G. denticulata	G. podophylla	G. gigantea	G. metteniana	A. costularis	A. spinulosa	S. brunoniana	S. lepifera
Mononucleotide	No. of SSRs	40	47	41	40	95	96	77	80
	Abundance (No./kb)	0.26	0.28	0.25	0.25	0.61	0.61	0.49	0.49
	Density (bp/kb)	2.93	3.16	3.13	2.88	7.67	7.60	6.41	6.23
	GC	0.36	0.35	0.40	0.3	0.22	0.19	0.08	0.09
Dinucleotide	No. of SSRs	8	9	10	10	14	14	15	11
	Abundance (No./kb)	0.05	0.05	0.06	0.06	0.09	0.09	0.10	0.07
	Density (bp/kb)	0.69	0.83	0.94	0.92	1.35	1.35	1.40	1.04
	GC	0.06	0	0.08	0.05	0	0	0.23	0.12
Trinucleotide	No. of SSRs	2	1	2	2	1	1	0	0
	Abundance (No./kb)	0.01	0.01	0.01	0.01	0.01	0.01	0	0
	Density (bp/kb)	0.16	0.07	0.15	0.15	0.08	0.08	0	0
	GC	0	0	0	0	0.33	0.33	0	0
Tetranucleotide	No. of SSRs	10	9	11	12	11	11	10	12
	Abundance (No./kb)	0.06	0.05	0.07	0.07	0.07	0.07	0.06	0.07
	Density (bp/kb)	0.80	0.67	0.84	0.92	0.87	0.87	0.82	0.91
	GC	0.18	0.14	0.18	0.16	0.29	0.29	0.3	0.21
Pentanucleotide	No. of SSRs	1	1	0	1	0	0	0	0
	Abundance (No./kb)	0.01	0.01	0	0.01	0	0	0	0
	Density (bp/kb)	0.10	0.09	0	0.09	0	0	0	0
	GC	0	0.4	0	0.4	0	0	0	0