Icelandic Birch Polyploids—The Case of a Perfect Fit in Genome Size

Table 1

Plant materials, ploidy determination, morphology evaluation, and genome size measurements (C- and Cx-values in Mbp) from FDM and FCM.

Plant identity number	Ploidy by karyotype	DNA Ploidy	Morphology index	1Cx-values		2C-values
				FDM-buds	FCM-twigs	FDM-buds	FCM-twigs
Bn-1	—	2x	—		453.4		906.8
Bn-2	—	2x	—		461.7		923.4
44	2x	2x	1	441.2		882.4
46	2x	2x	3	431.8		863.6
51	2x	2x	1	451.1		902.2
72	3x	3x	4		443.4		1330.2
81	3x	3x	4	447.2	441.7	1341.6	1325.1
71	4x	4x	6	445.4	439.3	1781.4	1757.2
83	4x	4x	7	433.7	453.5	1734.8	1814.0
85	4x	4x	8		430.2		1720.8
92	4x	4x	10	439.7	438.4	1758.8	1753.6
95	4x	4x	9		448.2		1792.8