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Figure 3

The chromosomes of polyploid poplar hybrids and their diploid control. (a) Tetraploid 75# (4×); (b) Diploid 61# (2×); (c) Triploid 65# (3×); (d) Tri-polyploid 73# (3×).
The chromosomes of polyploid poplar hybrids and their diploid control. (a) Tetraploid 75# (4×); (b) Diploid 61# (2×); (c) Triploid 65# (3×); (d) Tri-polyploid 73# (3×).