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. 2015 Jul 21;10(7):e0133722. doi: 10.1371/journal.pone.0133722

Table 2. Chromosome composition of the intergeneric BC2 and BC3 progeny between Saccharum spp. and E. arundinaceus.

Generation Progeny Chromosome composition No. of chromosomes No. of metaphases analyzed
Modal number Range Modal number Range Modal number Range Recombinants Type of recombinants
Total (2n cell) Saccharum spp. E. arundinaceus
BC2 YCE03-01 2n = 119 = 105S + 14E 119 115–122 105 103–106 14 12–14 0 — 10
BC2 YCE03-06 2n = 119 = 105S + 14E 119 118–123 105 104–107 14 13–15 0 — 16
BC2 YCE03-16 2n = 113 = 100S + 13E 113 109–113 100 98–101 13 12–14 0 — 15
BC2 YCE03-168 2n = 110 = 100S + 9E + E/S 111 108–113 100 99–103 10 8–10 1 E/S 10
BC2 YCE03-218 2n = 107 = 97S + 10E 107 105–108 97 97–99 10 9–12 0 — 14
BC2 YCE03-249 2n = 110 = 97S + 13E 110 107–113 97 96–100 13 12–15 0 — 22
BC2 YCE03-378 2n = 121 = 104S + 16E + S/E 121 115–121 104 101–105 16 15–17 1 S/E 8
BC2 YCE04-55 2n = 111 = 98S + 13E 111 109–114 98 96–100 13 11–13 0 — 18
BC2 YCE05-179 2n = 112 = 99S + 13E 112 108–116 99 96–101 13 13–14 0 — 12
BC3 YCE05-64 2n = 118 = 107S + 6E + 2(E/S)+3(S/E) 118 113–118 107 103–113 6 6 5 2(E/S)+3(S/E) 4
BC3 YCE05-150 2n = 116 = 108S + 8E 116 114–119 108 102–111 8 8 0 — 14
BC3 YCE06-61 2n = 114 = 107S + 7E 114 109–115 107 102–108 7 7 0 — 20
BC3 YCE06-63 2n = 105 = 98S + 7E 105 101–106 98 94–99 7 5–8 0 — 9
BC3 YCE06-92 2n = 118 = 109S + 7E + 2(E/S) 118 115–119 109 102–112 7 7 2 2(E/S) 10
BC3 YCE06-111 2n = 108 = 103S + 4E + E/S 108 104–110 103 100–106 4 4 1 E/S 15
BC3 YCE06-140 2n = 112 = 106S + 5E + S/E 112 108–112 106 100–109 5 5–6 1 S/E 11
BC3 YCE06-166 2n = 110 = 105S + 5E 110 106–111 105 101–106 5 5 0 — 4

Note: Since small variation of chromosome counts can occur due to the loss or the overlapping of a few chromosomes from the preparation, the modal number of chromosomes and the range of total numbers of chromosomes in 2n cell are presented for the sugarcane clones analyzed. S and E indicate Saccharum spp. chromosome and E. arundinaceus chromosome, respectively. S/E and E/S indicate Saccharum spp. centromere with E. arundinaceus chromosome segment and E. arundinaceus centromere with Saccharum spp. chromosome segment, respectively.