Fig. 2

Phalaenopsis meiotic spreads prepared by the modified drop method. Pachytene spread of P. equestris (a) and P. aphrodite subsp. formosana (b). c-d The DAPI-staining pachytene chromosomes of P. aphrodite subsp. formosana were converted to black and white to enhance the visualization of chromosomal structure. The pink arrows in (d) indicate chromomeres on pachytene chromosomes. Chromosomes of P. equestris (e) and P. aphrodite subsp. formosana (f) at meiotic metaphase I. Scale bar = 10 μm