摘要
以大聚藻断枝为试材,研究了在正向扦插、反向扦插、水平放置3种不同扦插方式下,大聚藻断枝、侧枝生长的生物学规律,以期为大聚藻无性繁殖技术提供数据支持及理论依据,并为科学制定大聚藻管理措施提供一定的参考依据。结果表明:反向扦插处理的断枝最早形成克隆分株,且形成的克隆分株最多,该处理断枝不发生伸长生长,但地上茎变粗;正向扦插处理的断枝形成的克隆分株数与水平放置处理相近,产生的克隆分株生物量与反向扦插处理相近,该处理断枝茎段继续伸长生长,地上茎变粗,地下茎则变细;水平放置处理的断枝形成的克隆分株生物量最大,并产生大量二级克隆分株,该处理断枝茎段也继续伸长生长,并变粗;反向扦插能形成最多的克隆分株,水平放置能形成更优势的克隆分株,二者更有利于分株繁殖。
Using fragmengs of MyriophyUurn aquaticum （Vell.） Verdc as material to explore the biological laws of fragments and lateral branches growth under the upward eutting, downward cutting, horizontal placing three different cutting methods. In order to provide data to support and theoretical basis for asexual propagation techniques of Myriophyllum aquaticum （Vell.） Verdc, and offer some reference for making the management measures of Myriophyllurn aquaticurn （Vell.） Verde scientifically. The results showed that downward cutting treatment was the earliest one to engender clonal ramets with a maximum of ramets,and the fragments no elongation growth occurred, but the aerial stems thicken;the clonal ramet number of upward cutting treatment similar to horizontal placing treatment, while the biomass of clonal ramets was close to downward cutting, and the fragments continue to elongate, the aerial stems thicken and the subterraneous stem thinned;horizontal placing treatment got most of the clonal ramets biomass and produces large amounts of second ramets,and the fragments also continue to elongate, and whole stem thicken;downward cutting could generate the maximum number of clonal ramets, the clonal ramets horizontal placing engendered were of high quality,they were more conducive to division propagation.
出处
《北方园艺》
CAS
北大核心
2014年第11期55-58,共4页
Northern Horticulture
关键词
大聚藻
断枝
扦插
克隆分株
生长
生物学规律
繁殖
Myriophyllum aquaticum （Veil.） Verdc
fragment
cutting
clonal ramet
growth
biological laws
propagation
