二月兰繁殖器官的形态特征及繁殖潜力扩散能力的研究
毕业论文关键词：二月兰；繁殖器官；繁殖潜力；沉降速度；扩散性
Abstract:Orychophragmus violaceusis cruciferous Orychophragmus herb and is widely distributed in China.This paper observe the characteristics of reproductive organs of Orychophragmus violaceus,introduces the main distribution of Orychophragmus violaceus in Nanjing , and research the reproductive potential,diffuse way and ability.And this paper found that its theoretical yield is 5.68g,so its reproductive potential is less than Brassica campestris L. and Brassica chinensis var chinensis under artificial cultivation condition;under natural conditions, reproductive capacity is weak.Its fruit crack when mature,and seeds spread by tension or stretch when fruit creak.Because the reproductive capacity of Orychophragmus violaceus is weak under natural conditions and seeds spread short distances,according to the experiment of sedimentation velocity, the sedimentation rate of the seeds of Orychophragmus violaceus is much higher than that of some seeds of weeds, so the dispersal ability is not strong,it can not be a weed.There is a small quantity of feral Orychophragmus violaceus founded,so it could become a artificial plant and it is important to protect the feral Orychophragmus violaceus.
Key words:Orychophragmus violaceus;reproductive organs;reproductive potential;settlement velocity;dispersal
目录
摘要 1
关键词 1
Abstract 1
Key words 1
引言 1
1二月兰的研究现状 1
1.1生长方面的研究 1
1.2植物成分研究 2
1.3繁殖技术 2
1.3.1杂交方面 2
1.3.2组织培养 2
1.4二月兰的开发利用价值 2
1.4.1用作蔬菜 2
1.4.2用作优质油料与饲料作物 2
1.4.3用作园林植被 3
1.5药用价值 3
2二月兰形态学特征 3
2.1二月兰的茎与叶 3
2.2二月兰的花 3
2.3果实及种子观察和测量 5
2.3.1果实 5
2.3.2种子 6
3二月兰在南京的分布及适应性 7
3.1二月兰在城市中的配置方法 8
3.1.1路边、水边种植 8
3.1.2林下种植 8
3.1.3不同坡度、坡向种植 8
3.1.4花坛及背景材料 8
4.繁殖潜力的研究 8
4.1研究方法 9
4.2产量测定项目和方法 9
4.3繁殖潜力分析 9
5二月兰的扩散能力 10
5.1二月兰的扩散方式 10
5.2种子沉降速度实验 10