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Table 2 Estimated age of the duplication events for PtSPL paralogous genes

From: Molecular characterization of the SPL gene family in Populus trichocarpa

Paralogous genes Ks Estimated time (mya)
PtSPL19(Chr1)/PtSPL11(Chr3) 0.16 9
PtSPL21(Chr2)/PtSPL26(Chr14) 0.31 17
PtSPL8(Chr2)/PtSPL27(Chr14) 0.29 16
PtSPL2(Chr2)/PtSPL9(Chr5) 0.27 15
PtSPL12(Chr8)/PtSPL13(Chr10) 0.24 13
PtSPL5(Chr8) /PtSPL1(Chr10) 0.22 12
PtSPL18(Chr1)/PtSPL22(Chr3) 0.17 9
PtSPL23(Chr 4)/PtSPL16(Chr11) 0.22 12
PtSPL20(Chr1)/PtSPL25(Chr11) 0.39 21
PtSPL7 (Chr2)/ PtSPL6 (Chr14) 0.25 13
PtSPL15(Chr12)/PtSPL14(Chr15) 0.30 16