摘要
用石腊切片法研究杉木嫩枝扦插生根过程，比较了成年树根颈萌条、树冠上部枝条及其复壮条扦插时不定根形成过程的差异。结果表明：复壮条与根颈萌条生根过程相似，一般不形成明显的愈伤组织，不定根由维管形成层或皮层薄壁细胞分裂而来；用上部侧枝扦插时，穗条基部常形成许多瘤状愈伤组织，不定根难以形成。
The rooting process of the softwood cuttings of Chinese fir was studied by paraffin section method and the differences among cuttings originated from branches of upper crown, sprouts of root collar of mature trees and of rejuvenated donors of Chinese fir were compared in the initiat and developing stages of the process. The results showed that Chinese fir falls into the category of tree species in which adventitious roots are initiated from pericaulome. Usually the adventitious roots developed from the vascular cambium or phloem parenchyma cells with ease and no callus formation when cuttings were from sprouts of mature tree and of rejuvenated doners whereas a number of calli were formed at the cut surface and few adventitious roots were developed when upper branches were rooted.
出处
《华中农业大学学报》
CAS
CSCD
北大核心
1998年第1期81-83,共3页
Journal of Huazhong Agricultural University
基金
湖北省自然科学基金
关键词
杉木
无性繁殖
不定根
嫩枝扦插
解剖学
Chinese fir (Cunninghamia lanceolata), vegetative propagation, adventitious roots, callus, rejuvenation
