During its growth period, every 7 to 10 days, the shoot apex growth point was taken, observed and photographed under a dissecting microscope and an optical microscope.
During its growth, every 7 to 10 days, the stem tip growth point is taken, and observation and photographing are made under anatomy microscope and optical microscope.
During the growth period, the shoot tip growth points were collected every 7-10 days, observed and photographed under the anatomical microscope and optical microscope.