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平时观察根冠总是采用已制好的切片在显微镜下观察但切片有时不易做好。如果利用柳树枝条作环状剥皮,再在試管装些水,将插条插于水中,环口留在水面之上,使环口处于潮湿之大气中。这时柳枝靸皮部被剝离、有机营养物質与生长激素不得下运,于是就在切口处刺激癒伤组织长出不定根,当根长在水里时,拿着試管对着光亮处观察,即可看到根的尖端处有一个象帽状的东西套上,就是根冠。
Usually observe the root of the crown is always made with a good section of the microscope under the microscope but the slice is sometimes difficult to do well. If the use of willow branches for ring-shaped peeling, then install some water in the test tube, insert the cuttings in the water, stay in the ring above the water surface, the ring in the damp atmosphere. At this time willow branches and peeled skin was stripped of organic nutrients and growth hormones may not be shipped, so at the incision to stimulate the callus to grow adventitious roots, when the root length in the water, holding the test tube facing the light Department observed , You can see the tip of the root has a hat-like things put on, is the root crown.