Molecular differentiation of commercial varieties and feral populations of oilseed rape (Brassica napusL.)

Table 4 Analysis of molecular variance (AMOVA) for 19 commercial varieties and eight feral populations of B. napus.

Source of Variation	d.f.	Sum of Squares	Variance Components	Percentage of Variation
a
Among groups	1	86.469	0.360 (V_a)	13.19
Among samples within groups	25	549.007	1.331 (V_b)	48.81
Among individuals within samples	184	215.258	0.134 (V_c)	4.90
Within individuals	211	190.500	0.903 (V_d)	33.10
Total	421	1041.235	2.727 (V_T)
Fixation Indices	F_IS = 0.129*	F_SC = 0.562**	F_CT = 0.132**	F_IT = 0.669**
b
Commercial Varieties
Among varieties	18	405.929	1.400 (V'_a)	60.70
Among individuals within varieties	128	113.758	-0.018 (V'_b)	-0.79
Within individuals	147	136.000	0.925 (V'_c)	40.09
Total	293	655.687	2.308 (V'_T)
Fixation Indices	F_IS = 0.020^ns	F_ST = 0.606**	F_IT = 0.599**
Feral Populations
Among populations	7	143.078	1.164 (V'_a)	46.64
Among individuals within populations	56	101.500	0.480 (V'_b)	19.25
Within individuals	64	54.500	0.852 (V'_c)	34.11
Total	127	299.078	2.496 (V'_T)
Fixation Indices	F_IS = 0.361**	F_ST = 0.466**	F_IT = 0.659**

For each group, total molecular variance is partitioned into three components: among groups (commercial varieties versus feral populations), among populations within groups and within populations.
*P < 0.001, **P < 0.0001 (based on 100000 permutations).

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