茶树枝梢空中压条后不定根发育过程的初步研究

为了探讨空中压条繁殖技术在茶树上应用的可行性,试验对环割、暗化及激素处理的黄绿色茶枝茎段外观形态和解剖结构进行观测,结果表明：（1）利用空中压条技术能使茶树茎段在母体上完成不定根诱导,并在环割口上端增粗的茎段上发出不定根,其所发根数及根的粗度均优于传统短穗扦插;（2）茶枝原始茎段无潜伏根原基,其茎段的不定根由诱生根原基发育而成;（3）在根原基发生过程中,还伴随着环割口愈伤组织形成及伤口上端茎段增粗的变化,愈伤形成小、茎粗增大显著的茎段易发生不定根。

The Development Process of Adventitious Root of the Tea Shoots by Air Layering

In order to explore the feasibility of applying the air layering method for tea vegetative propagation,the yellowish-green stems were girdled,hormone treated and bound up,and then their changes of external morphology and the anatomical structure were observed and determined.The results showed that:(1) The adventitious roots could be induced and then grown out from the thicker stems above the wound of girdling before these stems were cut off,and these adventitious roots were more abundance and sturdy than th...