安徽农业科学2011，Vol.39Issue(36)：22274-22276,3.
遮阴对不同大小种球大百合生长与光合特性的影响
Effects of Shade on the Growth and the Photosvnthetic Characteristics of Different Seed Bulb Size of Cardiocrinum giganteum
刘筱 1赵景龙 1邓洁 1余婷 1张帆2
作者信息
- 1. 四川农业大学风景园林学院,四川温江611130
- 2. 四川农业大学园林研究所,四川温江611130
- 折叠
摘要
Abstract
[ Objective ] The aim was to study the effects of different degree shade on the growth and the photosynthetic characteristics of different seed bulb size of Cardiocrinum giganteum, discuss the mechanism of introduction and domestication of Cardiocrinum giganteum. [ Method] Cardiocrinum giganteum was treated under different shading levels ( 0, 45% ,70% ) according to its diameter grade. After treated 13 days, the plant height and leaf number were measured. At the time of treated 46 days, the photosynthetic indices such as net photosynthetic rate (Pn), transpiration rate ( Tr) , intercellular CO2 concentration (Ci) , stomatal conductance (Gs) were determined, and synchronously determined photosynthetic active radiation (PAR) and leaf temperature (TL). [ Result] Cardiocrinum giganteum had high relative growth rate, net photosynthetic rate, transpiration rate and stomatal conductance, while intercellular CO2 concentration was low in 45% shade treatment. The physiological characteristics of Cardiocrinum giganteum were generally better than full sunlight treatment in 70% shade treatment, while excessive shade made a low photosynthetic rate, and reduced his growth. In addition, the greater the size of the seed bulb,the relative even better its growth and the physiological characteristics. Therefore, in production, using the bigger size seed bulb and appropriate controlling light intensity was the important measures of introduction and domestication of Cardiocrinum giganteum. [Conclusion] The research provides a theoretical basis for the landscape application of Cardiocrinum giganteum.关键词
大百合/遮阴/光合特性/种球大小Key words
Cardiocrinum giganteum/ Shade/ Photosynthetic characteristics/ Seed bulb size分类
农业科技引用本文复制引用
刘筱,赵景龙,邓洁,余婷,张帆..遮阴对不同大小种球大百合生长与光合特性的影响[J].安徽农业科学,2011,39(36):22274-22276,3.
