Fig. 6. The tube growth of Malus domestica ‘Granny Smith’ pollen in flowers of M. domestica ‘Royal Gala’ and its transgenic lines with MdMYB10 overexpression.

The stained pollen tubes were observed with a fluorescence microscope at 24, 48, and 72 h after pollination. WT, wild type; A1/3 and A4, transgenic lines. The white arrows indicate the locations where pollen tubes arrived; MT: multicellular trichome, Bars = 50 μm