桉树插条生根解剖研究

Anatomical Study on the Rooting of Eucalyptus Cuttings

对刚果１２号Ｗ５、雷林１号８０５１、尾叶桉插条生根解剖研究证明：桉树插条内未见潜伏根原基，必须用各种技术措施才能诱导生根。从维管形成层、韧皮薄壁组织细胞、韧皮射线、困射线、愈伤组织以及由维管形成层、韧皮射线、韧皮薄壁组织细胞组成的复合组织等部位都可产生诱导根原基；在适宜的环境条件下，诱导根原基可分化成不定根。即皮部生根和愈伤组织生根。

The anatomical study on the rooting stems of Eucalyptus ABL 12 W5,E.leizhou No, 1 8051 and E. urophylla indicated that there were not any latent root primodia inthe tissues of Eucalyptus cuttings. To induce rooting,various technical methods should beused.The root primodia could be induced to emerge from vascular cambia,phloem parenchy-ma cells, phloem rays, pith rays,callus,and the complex tissues including vascular cambiaphloem rays and phloem parenchyma cells. The induced root primodia could be differentiatedinto adventitious roots under appropriate environmental conditions.