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摘要： 花叶蔓长春是著名的常绿观叶植物，以其秀丽和良好的耐旱性而赢得人们的厚爱。它虽比较耐旱，但具体抗旱指标还未见报道[1]。因此，本论文选择了具有市场潜力的地被植物——花叶蔓长春，将对其抗旱性作深入研究。主要从花叶蔓长春形态结构特征、生理生化特性及抗旱机理、抗旱性鉴定方法等方面对其进行研究[2]。通过在不同的时间和湿度条件下对花叶蔓长春的叶面积、离体叶片失水率、相对含水量、质膜相对透性等指标的测定[3]，得出实验结果：花叶蔓长春具有适应环境变化及自我调节增加抗旱的能力。但与其他同学研究的植物相比，花叶蔓长春抗旱力较弱。从而为合理科学地种植及应用花叶蔓长春提供可靠的依据。9277
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关键词： 花叶蔓长春；抗旱性；失水率
Study on drought resistance of Vinca major Linn. cv. Variegata Loud.
Abstract : Vinca major Linn. cv. Variegata Loud. is a famous evergreen foliage plants. Its beautiful and good resistance to negative won the people’s love. Although Vinca major Linn. cv. Variegata Loud. is drought-tolerant, the specific index of drought resistance hasn’t been reported till now. Therefore, in this thesis, the market potential, ground cover plants--Vinca major Linn. cv. Variegata Loud was chosen to study its drought resistance, and mainly focused its structure characteristic, mechanism, biochemical and physiological drought resistance. Leaf area, the water loss rate of detached leaves, relative water content, the relative membrane permeability was measured to analysis of drought resistance characters. The experimental resuls here indicated that Vinca major Linn. cv. Variegata Loud. has the capacity of adapting the changing environment and self-regulating to increase drought resistance, but its ability of drought resistance is weak compared with other plant species, which were analyzed by my classmats. These results provided reliable data on how to scientifically planting and application of Vinca major Linn. cv. Variegata Loud.
Key Words : Vinca major Linn. cv. Variegata Loud.;drought resistance;water loss rate
目 录
1 绪论1
1.1课题背景1
1.1.1蔓长春花属的物种简介1
1.1.2 蔓长春花属形态特征1
1.1.3蔓长春花属生长习性 1
1.2花叶蔓长春背景1
1.2.1花叶蔓长春简介2
1.2.2花叶蔓长春形态特征2
1.2.3花叶蔓长春生长习性2
1.2.4花叶蔓长春的研究价值2
1.2.5本论文研究的必要性2
1.3实验相关数据介绍2
1.3.1叶面积3
1.3.2离体叶片失水率3
1.3.3相对含水量3
1.3.4质膜相对透性3
2 实验方法4
2.1叶面积测定4
2.1.1实验材料4
2.1.2实验器具和仪器设备4
2.1.3实验方法4
2.1.4实验条件4
2.2离体叶片失水率测定4
2.2.1实验材料4
2.2.2实验器具和仪器设备4
2.2.3实验方法4
2.2.4实验条件5
2.3相对含水量测定5
2.3.1实验材料5
2.3.2实验器具和仪器设备5
2.3.3实验试剂5
2.3.4实验方法5
2.3.5实验条件5
2.4质膜相对透性测定5
2.4.1实验材料6
2.4.2实验器具和仪器设备6
2.4.3实验试剂6
2.4.4实验方法6
2.4.5实验条件6
3 实验数据、结果与分析7
3.1实验数据7