Shade device for plant leaves and method for measuring chlorophyll fluorescence using the same

Abstract

The invention discloses a plant leaf shading device and a chlorophyll fluorescence measuring method using the shading device. The shading device includes a front shading layer used to cover the upper surface of the blade and provided with holes, and is used to cover the lower surface of the blade and is connected with the front shading layer. The rear light-shielding layer connected by layers, and the movable light-shielding cover for covering the opening, the front and rear light-shielding layers and the light-shielding cover are all made of soft and lightweight materials. Lightweight and low-cost tinfoil can be used as a soft and lightweight material, which is simple, convenient and effective for shading. It can also be adjusted according to the size of the leaves. The shading area is large without damaging the leaves. It is suitable for all types of plant leaves. The shading device of the invention is used for the dark adaptation of plant leaves in the measurement of chlorophyll fluorescence, is less affected by external environmental factors, is beneficial to the stability of data measurement, and the measurement data is relatively close to the complete shading condition.

Description

technical field [0001] The invention relates to the field of biotechnology, in particular to a plant leaf shader and a method for measuring chlorophyll fluorescence using the shader. Background technique [0002] Chlorophyll fluorescence, as a probe for the study of plant photosynthesis, has not only been widely studied and applied, but also has become an indispensable tool for studying photosynthesis. Almost all changes in the photosynthesis process can be reflected by chlorophyll fluorescence, and the fluorescence measurement technique does not need to break cells and does not harm organisms. Therefore, it is a simple, fast and reliable method to indirectly study the changes in photosynthesis by studying chlorophyll fluorescence. method. [0003] The measurement of chlorophyll fluorescence includes two aspects, namely dark adaptation and light measurement. The maximum fluorescence Fm and the original fluorescence Fo, as well as the maximum quantum yield Fv / Fm=(Fm-Fo) / Fm ...

AI Technical Summary

Problems solved by technology

[0006] An object of the present invention is to provide a shader for plant leaves, which does not damage the leaves, is suitable for all types of plant leaves, is easy to operate and has a good shading effect, thereby overcoming the fact that the shading leaf clips matched with existing instruments are not suitable for small and soft plants The leaves and shading effects are vulnerable to external influences

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