Genetic Diversity of Arabica Coffee (Coffea arabica L.) in Nicaragua as Estimated by Simple Sequence Repeat Markers
Table 4
SSR-based AMOVA for the 26 populations of arabica coffee: (A) without grouping the populations, (B) by grouping the populations according to varieties, (C) by grouping the populations according to regions of origin, and (D) by grouping the populations according to province of origin.
Groups
Sources of variation
Degrees of freedom
Variance components
Percentage of variation
Fixation indices
-value
(A) without grouping populations
AP
25
Vaโ=โ0.194
13.50
= 0.130
Va and = 0.000
WP
494
Vbโ=โ1.25
86.50
Total
519
1.44
(B) Populations grouped by varieties
AV
7
Vaโ=โ0.115
7.90
= 0.140
Vc and = 0.000
APWV
18
Vbโ=โ0.095
6.50
= 0.070
Vb and = 0.000
WP
494
Vcโ=โ1.25
85.60
= 0.08
Va and = 0.023
Total
519
1.46
(C) Populations grouped by regions of origin
AR
1
Vaโ=โโ0.022
โ1.60
= 0.125
Vc and โ= 0.000
APWR
24
Vbโ=โ0.25
14.10
= 0.139
Vb and = 0.000
WP
494
Vcโ=โ1.25
87.50
= โ0.016
Va and = 0.812
Total
519
1.43
(D) Populations grouped by province of origin
APr
7
Vaโ= โ0.002
โ0.14
= 0.134
Vc and = 0.000
APWPr
18
Vbโ=โ0.196
13.57
= 0.136
Vb and โ= 0.000
WP
494
Vcโ=โ1.25
86.57
= โ0.001
Va and = 0.419
Total
519
1.44
AP:โamong populations; WP:โwithin populations; AV:โamong varieties; APWV:โamong populations within varieties; AR:โamong regions; APWR:โamong populations within regions; APr:โamong provinces; APWPr:โamong populations within provinces.
