光热条件对高雪轮种子发芽影响的研究
时间:2018-03-27 15:25 来源:毕业论文 作者:毕业论文 点击:次
摘要:高雪轮作为一种性价比很高的观赏植物,它具有株形优美、花序美丽、抗逆性强、管理粗放、文护费用低等特点,在许多的景观设计,尤其是在花海的运用和花镜设计的过程中,由于其优良的品质和高性价比,而备受青睐。本课题选用高雪轮的种子作为实验对象,分别通过设置不同的光照强度(强光照,中光照,弱光照和全黑暗四组)梯度和温度梯度(10℃,15℃,25℃和35℃四组),来观察高雪轮种子相应的萌发情况,并且记录萌发率等相关数据。通过分析数据,我们发现在光照组实验中高雪轮种子在各光照梯度下萌发率无太大差异;在温度组的实验中高雪轮种子在20℃—25℃条件下萌发率最高,萌发状态最好。通过本课题的研究,可以更好地了解高雪轮种子萌发的最适宜光热环境,以便我们在以后在对于高血轮的运用过程当中,选择适宜的播种时机或者创造适宜的萌发条件,提高高雪轮种子的萌发率和萌发质量,提高景观质量,降低后期管理的成本,丰富城市景观,提高城市生态系统的生物多样性,美化我们的生活环境。20230 关键词: 种子; 光热条件; 萌发; 影响 Research on the impact of light and heat conditions germination of seeds Gaucher round Abstract: Gaucher round as a high cost of ornamental plants,It has a beautiful plant type , inflorescence beautiful , strong resistance , extensive management, low maintenance costs,In many landscape design,Especially in the use of flowers and glasses design process , because of its excellent quality and cost-effective, and widely accepted.The topic chosen seed Gaucher round as experimental subjects , respectively, by setting different light intensity and temperature gradients to observe appropriate Gaucher round seed germination and germination rate and other related data records.By analyzing the data, we found that in the light set of experiments Gaucher round seed germination rate under each light gradient is no big difference ; Gaucher round seed germination rate at 15 ℃ -20 ℃ temperature conditions in the experimental group , the germination of the state 's most good。By studying this topic , you can better understand the high snow round seed germination optimum light and heat environment , so that we in the future in the use of high blood round process, choose the appropriate timing of sowing or create appropriate conditions for germination and improve germination and seed germination quality Gaucher round , improve landscape quality, reduce costs subsequent management of rich urban landscape , improve the urban ecosystem biopersity , beautify our living environment. Keywords : seed ; solar thermal conditions ; germination ; impact 目录 1 引言 1 1.1 种子的萌发基本概述 1 1.1.1 种子的发育阶段 1 1.2 影响种子萌发因素 2 1.2.1 种子萌发的自身条件 2 1.2.2 外界影响因素 3 1.3 高雪轮选取的原因 4 1.3.1 高雪轮的研究概况和背景 5 1.4 研究的目的、意义 6 2 材料与方法 7 2.1 供试材料 7 2.2 实验仪器设备 7 2.3 试验方法与设计 7 2.3.1 种子重量的测定 7 2.3.2 试验方法设计 7 2.4 实验参数及计算 8 3 结果与分析 9 3.1 种子的千粒重 9 3.2 温度对高雪轮种子萌发的影响 9 3.2.1 原始数据 9 3.2.2 温度对各项萌发参数的影响 10 3.3 光照对高雪轮种子萌发的影响 11 (责任编辑:qin) |