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(a) The chromosome of diploid plant, 2n=2×=18 (bar: 6.04 × 10-4 cm). (b) The chromosome of tetraploid plant, 2n=4×=36 (bar: 6.04 × 10-4 cm). (c,d). Stomatal apparatus of diploid and tetraploid plants in Sophora flavescens from glasshouse. Each Stomatal apparatus was obtained from the same part of diploid (c) and tetraploid (d) unifoliate leaves in the glasshouse (bar: 7.36 × 10-3 cm)
