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Table 1 The parental genetic distances measured with chloroplast and nuclear DNA, and average pollen fertility of nine wild-collected species (strain ID nos. 1–9) and 43 F1 hybrids (strain ID nos. 10–52).

From: Unveiling cryptic species diversity of flowering plants: successful biological species identification of Asian Mitellausing nuclear ribosomal DNA sequences

Strain ID Cross designa Maternal (Populationb) Paternal (Populationb) Nc Nuclear genetic distance Chloroplast genetic distance Average fertility (± s.d.)
1 wild, Clade A M. pauciflora 5 0 0 0.872 ± 0.123
2 wild, Clade A M. koshiensis 4 0 0 0.798 ± 0.169
3 wild, Clade A M. furusei var. subramosa 5 0 0 0.838 ± 0.107
4 wild, Clade B M. kiusiana 6 0 0 0.685 ± 0.277
5 wild, Clade B M. stylosa var. stylosa 7 0 0 0.813 ± 0.101
6 wild, Clade B M. stylosa var. makinoi 8 0 0 0.860 ± 0.122
7 wild, Clade C M. japonica (Shikoku & Kyushu) 6 0 0 0.923 ± 0.096
8 wild, Clade C M. japonica (Honshu) 4 0 0 0.808 ± 0.123
9 wild, Clade C M. yoshinagae (Kyushu) 2 0 0 0.995 ± 0.007
10 WS, Clade A M. furusei var.furusei (16) M. furusei var.subramosa (29) 6 0.0087 0.0033 0.170 ± 0.104
11 WS, Clade A M. furusei var.subramosa (29) M. furusei var.furusei (16) 4 0.0087 0.0033 0.205 ± 0.205
12 WS, Clade A M. furusei var.subramosa (18) M. furusei var.subramosa (38) 6 0.0121 0.0061 0.103 ± 0.024
13 WS, Clade A M. furusei var.subramosa (38) M. furusei var.subramosa (18) 5 0.0121 0.0061 0.028 ± 0.013
14 WS, Clade B M. stylosa var.stylosa (15) M. stylosa var. makinoi (55) 12 0.0133 0.0033 0.417 ± 0.217
15 WS, Clade C M. japonica (60) M. japonica (60) 3 0 0 0.837 ± 0.015
16 WS, Clade C M. japonica (70) M. japonica (56) 9 0.0023 0.004 0.867 ± 0.065
17 WS, Clade C M. japonica (70) M. japonica (51) 19 0.0023 0.0027 0.788 ± 0.114
18 WS, Clade C M. yoshinagae (44) M. yoshinagae (64) 6 0.0217 0.0007 0.019 ± 0.029
19 WS, Clade C M. japonica (60) M. japonica (29) 9 0.0364 0.0007 0.348 ± 0.348
20 WS, Clade C M. japonica (29) M. japonica (60) 8 0.0364 0.0007 0.260 ± 0.178
21 WS, Clade C M. japonica (70) M. japonica (29) 5 0.0378 0.0027 0.038 ± 0.064
22 WS, Clade C M. japonica (29) M. japonica (56) 9 0.0385 0.0013 0.034 ± 0.023
23 BS, Clade A M. furusei var.subramosa (29) M. pauciflora (29) 6 0.0022 0.0014 0.303 ± 0.073
24 BS, Clade A M. koshiensis (6) M. pauciflora (52) 1 0.0087 0.002 0.140 ± 0
25 BS, Clade A M. furusei var.subramosa (24) M. pauciflora (24) 6 0.0099 0.0034 0.343 ± 0.077
26 BS, Clade A M. furusei var.subramosa (19) M. koshiensis (5) 7 0.011 0.0027 0.271 ± 0.109
27 BS, Clade A M. acerina (19) M. furusei var.subramosa (19) 7 0.0122 0.0013 0.266 ± 0.124
28 BS, Clade A M. furusei var.subramosa (19) M. acerina (19) 7 0.0122 0.0013 0.254 ± 0.110
29 BS, Clade A M. furusei var.subramosa (19) M. acerina (19) 4 0.0122 0.0013 0.188 ± 0.021
30 BS, Clade A M. acerina (19) M. furusei var.subramosa (29) 3 0.0156 0.004 0.270 ± 0.173
31 BS, Clade B M. kiusiana (60) M. stylosa var. makinoi (71) 8 0.018 0.0068 0.274 ± 0.128
32 BS, Clade B M. kiusiana (68) M. doiana (72) 10 0.0203 0.0138 0.114 ± 0.097
33 BS, Clade B M. stylosa var. makinoi (55) M. doiana (72) 12 0.025 0.0054 0.068 ± 0.068
34 BS, Clade C M. yoshinagae (69) M. japonica (29) 11 0.0214 0 0.015 ± 0.019
35 BS, Clade C M. japonica (60) M. yoshinagae (47) 9 0.0301 0.0013 0.320 ± 0.238
36 BS, Clade C M. formosana (77) M. japonica (29) 3 0.0316 0.0075 0
37 BS, Clade C M. yoshinagae (44) M. formosana (77) 2 0.0316 0.0082 0.005 ± 0.007
38 BS, Clade C M. japonica (60) M. yoshinagae (64) 13 0.0354 0.0007 0.262 ± 0.136
39 BC M. acerina (19) M. stylosa var. makinoi (55) 2 0.0227 0.004 0.007 ± 0.007
40 BC M. furusei var.subramosa (38) M. kiusiana (67) 3 0.0288 0.0096 0.023 ± 0.040
41 BC M. koshiensis (5) M. kiusiana (60) 2 0.032 0.0075 0.030 ± 0.028
42 BC M. kiusiana (68) M. pauciflora (52) 6 0.0346 0.0089 0.028 ± 0.026
43 BC M. furusei var.subramosa (24) M. stylosa var. makinoi (55) 3 0.0347 0.0033 0.02
44 BC M. pauciflora (52) M. stylosa var. makinoi (45) 7 0.0371 0 0.103 ± 0.216
45 BC M. japonica (60) M. acerina (19) 4 0.0549 0.011 0
46 BC M. kiusiana (60) M. japonica (60) 3 0.0646 0.0007 0
47 BC M. japonica (60) M. pauciflora (39) 2 0.0672 0.0083 0
48 BC M. japonica (60) M. furusei var.subramosa (38) 3 0.0672 0.0103 0
49 BC M. formosana (77) M. acerina (19) 2 0.0691 0.0054 0
50 BC M. formosana (77) M. stylosa var. makinoi (55) 3 0.072 0.0027 0
51 BC M. yoshinagae (64) M. kiusiana (64) 3 0.0747 0.0013 0.003 ± 0.006
52 BC M. furusei var.subramosa (29) M. japonica (29) 2 0.0747 0.0082 0
  1. a. Abbrebiations; wild: wild collected, cultivated plants examined for pollen fertility, WS: cross within biological species, BS: cross between species within the clade (A, B, C) defined in Figure 2, BC: cross across the clades.
  2. b. Their geographic origins are shown as a number in parentheses, each of which corresponds to the population ID no. in Additional file 1: Table S1.
  3. c. The number of plant individuals examined for their fertility.