【摘要】 板栗扦插不易生根,用HL—43生根剂处理扦插板栗嫩枝,进行愈伤组织及不定根形成的细胞组织学研究,结果证明:其插穗愈伤组织及不定根的形成,需经过诱导起动,分裂分化及器官形成三个阶段。不定根的形成可以产生在插入苗床的枝段各个部位,以基部1—3节最多,主要由维管形成层细胞或韧皮部薄壁细胞分裂产生。愈伤组织只在剪口处发生,并停留在此阶段,仅有少数愈伤组织形成不定根。更多还原

【Abstract】 It is difficult for chinese chestnut cutting to form roots by cuttage. So, in this paper, the chinese chestnut cutting was treated with HL—43 for studying thecytology and histology of the formation of callus and adventitious roots. The results showed: the formation of callus and adventitious roots included 3 stages, firstly the inducement of promotion, secondly the division and differentiation, and thirdly organ formation. Adventitious roots cood be produced in every position of the branches inserted in the seedbed, most of which distributed in 1—3 node of base. The adventitious roots were mainly fromed from the vascular cambium cell or phloem parenchyma, the callus were produced at the place of cutting, and which remained at the stage, only fewer of the callus could form adventitious roots.更多还原