The invention provides a robina stem-apex
chromosome pressing method, comprising: taking material, preprocessing, fixing, dissociating, pressing,
dyeing, striking, microscopic examining, characterized in that: taking the stem-apex of robina
tissue culture seedling in vigorous growth stage at 3-5pm at the culture-
room temperature 22-25 DEG C., wherein the
cell of the stem-apex of robina
tissue culture seedling is at vigorous division stage; preprocessing the stem-apex using 8-hydroxy
quinoline 0.002-0.004m for 3-5 hours; pressing the stem-apex using a cross pressing method;
dyeing the pressed stem-apex using carbol fuchsin; striking the material using a pencil head and uniformly dispersing the cells to the best. The robina stem-apex
chromosome pressing method has features of simple operation, high pressing efficiency, saved
medicine consumption, uniform
chromosome dispersion, easy counting, very easy observation of
metaphase chromosome, uniform and clear
dyeing, especially suitable for chromosome pressing of tough wood material.