摘要苋菜含有丰富的营养物质[1]和较高的药用价值[2]，在我国具有悠久的栽培历史，是一种常见的蔬菜。苋菜的种类多样，其中最主要的分类是绿叶苋菜和紫叶苋菜。本文主要对绿叶苋菜和紫叶苋菜的种子萌发率、生长量、花青素含量和叶绿素含量进行研究，从而找出两者的不同。实验所得主要结果为：69927

1.除萌发率外，绿叶苋菜的萌发指标均劣于紫叶苋菜，紫叶苋菜发芽的整齐度与速度情况较好。

2.实验过程中，测量到绿叶苋菜的生长量生长速度低于紫叶苋菜。在测量初期，绿叶苋菜高于紫叶苋菜，叶面积略高于紫叶苋菜。在后期，紫叶苋菜的生长速度大，株高和叶面积均大于绿叶苋菜。

3.花青素含量绿叶苋菜低于紫叶苋菜。无论是种子、幼苗，还是叶片，绿叶苋菜的花青素含量均低于紫叶苋菜。在生长过程中，绿叶苋菜的花青素含量逐渐增长，而紫叶苋菜的花青素含量在幼苗时最大。

4.叶绿素含量绿叶苋菜低于紫叶苋菜。无论是幼苗还是叶片，紫叶苋菜的花青素含量均高，其含量的增长速度也大于绿叶苋菜。

毕业论文关键词：苋菜  种子萌发  花青素  叶绿素

The Study on the Seed Germination and Seedling Growth Characteristics of Different Amaranths

Abstract

Amaranth contains rich nutrients and high medicinal value, and it has a long history of cultivation in China. It is a kind of common vegetables. Amaranth species persity, the most important categories are green leaves and purple leaves. This paper focuses on research seed germination, growth, anthocyanin content and chlorophyll content of green leaves amaranth and purple leaves amaranth to find out the difference between the two. The main results of the experiment are as follows:

1．In addition to the germination rate，the germination index of green leaves amaranth was inferior to the purple leaves amaranth. And germination uniformity and velocity of purple leaves amaranth are better.

2. During the experiment, the measurement to the growth of the green leaves amaranth is lower than the purple leaves amaranth. At the beginning of the measurement, green leaves amaranth was higher than purple leaves amaranth, and leaves area of green leaves amaranth was slightly higher than the leaves area of purple leaves amaranth. In the later, purple leaves amaranth growth rate is large, plant height and leaf area were greater than the green leaves amaranth.

3. The anthocyanin content of green leaves amaranth was lower than that of purple leaves amaranth. Anthocyanin content of seeds, seedlings, and leaves of green leaves amaranths were lower than that of purple leaves amaranths. In the process of growth, the anthocyanin content of green leaves amaranth was growing, but anthocyanin content of seedlings of purple leaves amaranths was the largest.

4. The chlorophyll content of green leaves amaranth below purple leaves amaranth. Chlorophyll content of seeds and seedlings of purple leaves amaranths were higher than that of green leaves amaranths. And the growth rate of chlorophyll content of purple leaves amaranth is greater than that of purple leaves amaranth.   

Key Words: amaranth  seed germination  growth characteristic  anthocyanin chlorophyll

目  录

摘要Ⅰ

Abstract-Ⅱ

目录Ⅳ

1 绪论-1

1.1研究目的及意义1

1.2研究现状-1

1.3研究内容-2

2材料与方法-2

2.1材料-2

2.2主要器材-2

2.3试剂-2

2.4方法-2

3结果与分析-4

3.1不同苋菜种子萌发率的比较-4

3.2不同苋菜品种生长量的比较-4