几种不同浓度激素对红叶石楠扦插生根的影响(毕业论文)

河南科技大学毕业设计（论文）

几种不同浓度激素对红叶石楠扦插生根的影响

姓名林震

院（系）林学院

专业园艺

指导教师陈迪新

年月日

几种不同浓度激素对红叶石楠扦插生根的影响

摘要

红叶石楠（Photinia fraseri）是蔷薇科石楠属的杂交种或选育的栽培种，常绿小乔木或多枝丛生灌木，其显著特征是春、秋两季新梢嫩叶火红亮丽，冬季叶片仍呈深红色，是很好的景观苗木。红叶石楠不但生长速度快，而且树形紧凑，萌芽性强，耐整形修剪，可作各种造型，是很好的绿篱材料。红叶石楠适应性强，适合多种土壤，较耐低温，移植容易，是目前我国最著名的彩页观赏树种。

在红叶石楠扦插育苗过程中，对插穗进行激素处理是十分必要的。本文应用吲哚乙酸（IAA）、吲哚丁酸（IBA）、生根粉（ABT）三种激素，每种激素配成5种浓度梯度分别对插穗进行处理，探究其对红叶石楠扦插苗生根的影响。试验结果表明，激素及浓度适当时，能很好地促进扦插苗生根，提高其成活率，其中，生根剂为IBA，浓度为200mg/L时，浸泡两个小时，插穗生根数最多，根系最长，成活率最高。

关键词：红叶石楠；扦插；激素；平均根长；成活率

EFFECTS OF SEVERAL DIFFERENT KINDS AND CONCENTRATION ON THE ROOTING OF PHOTINLA

SERRULATA CUTTINGS

ABSTRACT

Photinia fraseri is cultivated species of rosaceae photinia hybrids or breeding.As a small evergreen tree or shrub tamarix,the leaves remarkable characteristic are red and bright in spring and autumn.Moreover,the winter leaves are still dark red,therefore,it is good as a landscape.Photinia fraseri not only grows fast,but aslo have a compact shape,sprout strongly,resistant to pruning,which can be used for various mold as a good hedge materials.Photinia fraseri can adapt most environment strongly,suit for a variety of soil,can resist lower temperature and transplantation easily.It is the most famous omamental tree species in China currently.

It is necessary to use hormonal treatment in the photinia fraseri cutting propagation process. In this paper, three hormone of indole acetic acid (IAA)、indole butyric acid (IBA) and rooting powder (ABT),which were divided into five concentration gradient,have been chose to explore the roots photinia fraseri cutting seedlings affected. The results obtained by the experiments indicated that hormones and the appropriate concentration can promote rooting cuttings and improve the survival rate, when the rooting concentration of IBA of was 200mg/L,the root number of cutting was the most, the length was the longest and the survival rate was the highest.

KEYWORDS: photinia serrulata;cuttings;hormones;the average of root length; survival rate

目录

摘要

ABSTRACT

1 前言 (1)

1.1 苗木生产中常用繁殖方法 (1)

1.1.1 种子繁殖 (1)

1.1.2 分株繁殖 (2)

1.1.3 压条繁殖 (2)

1.1.4 嫁接繁殖 (2)

1.1.5 扦插繁殖 (2)

1.2 几种激素在扦插生根中的应用 (2)

1.3 本文研究的目的、内容和意义 (3)

2 材料与方法 (4)

2.1 试验材料 (4)

2.2 整地 (4)

2.3 实验设计 (5)

2.4 扦插方法及插后管理 (5)

2.5 调查统计分析方法 (5)

3 结果与分析 (5)

3.1 不同激素与浓度对红叶石楠扦插后25天后愈伤组织形成状况。 (5)

3.2 不同激素及浓度浸泡两个小时后对扦插苗生根条数的影响 (6)

3.3 不同激素及浓度对扦插苗生根长度的影响 (9)

3.4 不同激素及浓度对扦插苗生根率的影响 (12)

3.5 不同激素及浓度对扦插苗成活率的影响 (15)

4 结论与讨论 (18)

4.1 结论 (18)

4.1.1 激素种类对红叶石楠扦插生根影响 (18)

4.1.2 激素浓度对红叶石楠扦插生根影响 (18)

4.1.3 激素种类及浓度交互作用对红叶石楠扦插生根的影响 (18)