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Table 8 Pairwise Nei’s unbiased genetic distance (GD) and
genetic identity (GI) and
Fst
and
Nm
among indigenous and
exotic collections of
C. capsularis
and
C. olitorius
Polymorphic
C. capsulari
C. olitorius
GD
0.070
0.045
GI
0.932
0.956
Fst
0.064
0.046
Nm
3.672
5.206
and in
C. olitorius
the values between OI and OII
were 0.033 and 0.052, respectively (not shown in
Table). These results are also in agreement with the
GD and
Fst
values and AMOVA results obtained
between indigenous and exotic collections of the two
species indicating high gene flow resulting in poor
population differentiation.
2 Discussion
Over the years, SSRs have become the markers of
choice due to their abundance, co-dominance and
locus-specific nature. Consequently, these markers
have been extensively used for gene tagging, genetic
mapping and genetic diversity analysis in a number of
crop plants (Roder et al., 1998; Temnykh et al., 2000;
Prasad et al., 2000; Lee et al., 2004; Malysheva-Otto
et al., 2006; Barkley et al., 2006; Li et al., 2009; Wen
et al., 2009; Asfaw et al., 2009; Blair et al., 2010; Cho
et al., 2011; Mir et al., 2011; Albrecht et al., 2011;
Mandel et al., 2011). Although jute is an orphan crop
Figure 4 Graphical plot of
∆K
values for (A)
C. capsularis
and
(B)
C. olitorius
; the maximum value of
∆K
was considered to
be the exact value of
K
(genetic groups or sub-populations);
K
=2 for both
C. capsularis
and
C. olitorius
in terms of non-availability of genomic resources, we
developed a large repertoire of SSRs in the recent past
[Mir et al., 2008b; Mir et al., 2009; Das et al., 2011
(J Genetics, accepted)]. These SSRs are being
Table 9 Distribution of
C. capsularis
and
C. olitorius
genotypes from different countries to each sub-population and admixture as
defined by STRUCTURE
Country
CI CII
Admixture
Total
Country
OI
OII
Admixture
Total
India
6 81
14
101
India
44
46
16
106
China
2
2
2
6
Nepal
7
0
4
11
Thailand
17
1
0
18
Thailand
4
0
1
5
Nepal
7
0
0
7
Indonesia
1
0
1
2
Brazil
6
0
0
6
Tanzania
5
0
1
6
Burma
2