期刊论文

中文

湖南农业大学学报(自然科学版)

1007-1032

2014

40

5

519-524

10.13331/j.cnki.jhau.2014.05.012

湖南省教育厅科学研究重点项目（11A130）；

本校为第一机构

以3年生短梗大参(Macropanax rosthornii)硬枝为插穗,分别用清水浸泡(对照)和500 mg/LIBA溶液浸泡,采用随机区组设计,扦插于黄土基质中,分析其生根特性,并测定生根过程中插穗的可溶性糖、可溶性蛋白质含量和多酚氧化酶(PPO)、过氧化物酶(POD)、吲哚乙酸氧化酶(IAAO)活性。以1年生嫩枝为材料,探寻短梗大参插穗生根的解剖学机理。结果表明:短梗大参在扦插生根过程中不产生愈伤组织,生根类型为皮部生根型,对照的扦插生根率高达97%;插穗的可溶性糖含量在根诱导和表达阶段均比扦插前降低,最大降幅达64.75%,而在根生长阶段升高;可溶性蛋白质含量在根诱导阶段比扦插前明显下降,最大降幅达69.18%,而在表...

Contrasted by water dipped samples, 3-year hard-wood cuttings ofMacropanax rosthornii, dipped with IBA at a concentration of 500 mg/L, were inserted into a substrate of yellow subsoil according to completely randomized block design. Rooting characters and the changes of soluble sugar content, soluble protein content and activity of polyphenol oxidase （PPO）, peroxidase （POD）, indoleacetic acid oxidase （IAAO） were studied during cutting rooting. The anatomic mechanism of rooting was also studied by using 1-year soft-wood cuttings of Macropa...