摘要本研究是以铁皮石斛(Dendrobium officinale Kimura et Migo)试管苗为材料，进行快速繁 殖的优化研究，主要步骤包括丛生芽的增殖、苗的生根、炼苗、移栽以及仿野生栽培。通过 株数、株高、根数、根长的测定及成活率的统计分析，探究其较优的生长条件。研究结果表 明：1/2MS+0。1 mg•L-1 NAA +0。1 mg·L-1 PP333 培养基在增粗幼苗茎杆及增加其生根率方面 有着显著优势。炼苗两天的石斛苗在之后的实验中成活率最高。移栽后，栽培在在树皮中的 石斛苗生长状况最好。此外，每年四月份较五月份、八月份和九月份更适合石斛苗的生长。 仿野生环境中，最适宜幼苗生长的环境条件为于水杉树上贴树生长。88030

This experiment was based on studying rapid propagation of Dendrobium officinale Kimura et Migo in vitro,mainly including adventitious bud multiplication and rooting, hardening, transplanting and the imitation of the wild cultivation。 Through the statistics of stem height,root length,the number of stems and roots, and the calculation of the survival rate , to explore the optimal growth conditions。 The result shows that culture medium (1/2MS+0。1 mg• L-1 NAA +0。1 mg• L-1 PP333) has a significant advantage in enlarging seedling stem and increasing rooting rate。 Seedlings which were exercised for two days had the highest survival rate of experiment。 After transplanting,seedlings of Dendrobium candidum grow best in the bark。 In addition, April is the more suitable month for the growth of seedlings than May,August and September。In the imitation of the wild cultivation, dawn redwood is more appropriate for growing seedlings。

毕业论文关键词：铁皮石斛;  组织培养;  仿野生栽培From~优E尔L论E文W网wWw.YoUeRw.com 加QQ7520.18766

Keyword: Dendrobium officinale Kimura et  Migo; tissue  culture; the  imitation of the wild cultivation

目 录

引言 4

1 材料与方法 5

1。1 样本基地情况 5

1。2 材料 5

1。3 研究方法 6

1。3。1 丛生芽的增殖及继代 6

1。3。2 幼苗生根 6

1。3。3 炼苗 6

1。3。4 移栽 7

1。3。5 仿野生栽培 7

2 实验结果及分析 8

2。1 诱芽培养基对丛生芽增殖的影响 8

2。2 生根培养基对幼苗生根的影响 8

2。3 不同炼苗时间对移栽成活率的影响 10

2。4 不同栽培基质对移栽成活率的影响 10

2。5 不同移栽时间对移栽成活率的影响 11

2。6 仿野生栽培 12

3