摘要
为大量栽培繁殖羊踯躅提供药用植物资源,采用羊踯躅(Rhododendron molle)扦插繁殖试验,研究了羊踯躅插穗内源激素及营养物质对其扦插不定根形成的影响。结果表明:嫩枝扦插效果好于硬枝,不同时间、不同激素处理是影响其扦插生根的重要因子;在此基础上,对嫩枝与硬枝插穗中内源激素以及营养物质水平进行了测定,结果发现,嫩枝插穗中脱落酸(ABA)、吲哚乙酸(IAA)、赤霉素(GA3)和玉米素(Z)的含量低于硬枝。而IAA、ABA的含量和扦插生根有密切关系,高浓度的IAA、GA3抑制其生根;IAA/ABA比值不能用来衡量羊踯躅的生根力;羊踯躅插条的C、N含量丰富,但不是促进生根的重要物质。
The cottage propagation test of Rhododendron molle was conducted to study the effect of endogenous hormones and nutritive materials in cuttings of Rhododendron molle on its adventitious rooting and to provide a scientific basis for cultivation and propagation of Rhododendron molle.The results showed that the cottage effect of young shoots was better than old shoots,and the cutting rooting effect was mainly affected by different hormone and treatment time.The results from measuring levels of endogenous hormones and nutritive materials in young and old cuttings showed that the content of ABA,IAA,GA3 and Z in young cuttings was lower than old cuttings.The content of IAA and ABA is related to cutting rooting and IAA and GA3 with high concentration inhibit its cutting rooting.The rooting capacity of Rhododendron molle can not be measured the IAA/ABA ratio.The C and N contents in Rhododendron molle cuttings are high but C and N contents are not the important materials of promoting its cutting rooting.
出处
《贵州农业科学》
CAS
北大核心
2010年第6期72-75,共4页
Guizhou Agricultural Sciences
基金
贵州省重大专项"延长百里杜鹃花期的配套技术开发利用"[黔科合重大专项字(2007)6005]
关键词
羊踯躅
扦插
生根
内源激素
营养物质
Rhododendron molle
cutting
rooting
endogenous hormones
nutritive material
