How to Select Test Blades for Photosynthesis Test
At present, in the study of photosynthesis of plants, it is often necessary to continuously perform photosynthesis measurements for a long time, so a photosynthesis instrument that satisfies this requirement is required. With the development of science and technology, the photosynthesis instrument developed and produced by Topp Yunnong satisfies the requirement of photosynthesis measurement, and it is widely used in the current research of plant physiology.
Plant leaves are important organs for photosynthesis of plants, and the amount of chlorophyll directly affects the speed of photosynthetic rate. Within a certain range, the more chlorophyll content, the stronger the photosynthetic rate. Therefore, the measurement object of the photosynthesis instrument is generally also directed at the leaves of the plant, so in the selection of the blade, the representative blade should be selected as far as possible. Since the color of plant leaves is a comprehensive manifestation of various pigments in leaves, it is mainly determined by the ratio between the two pigments of green chlorophyll and yellow carotenoids. Therefore, if the test area is mostly yellow pages, yellow pages should be selected. , and most of the area is green, you should choose green leaves. In addition, the extension, contraction, presence or absence of diseases and insect pests, and the width and width of the leaves will directly or indirectly affect the photosynthetic rate. Therefore, when selecting the test blade, it is also necessary to fully consider this.
The net photosynthetic rate and transpiration rate measured by the photosynthesis instrument are measured values ​​per leaf area. Therefore, the determination of the measurement area is an important step in the photosynthesis instrument measurement process. The leaf chamber used should be selected according to the size of the plant leaf. It is the area of ​​the blade that is larger than the measured area of ​​the leaf chamber, then it can be ensured that the leaf chamber is completely filled with the blade. In this case, there is no need to change the area parameter.
In short, in the process of determining the photosynthetic rate of plants using photosynthesis instrument, the choice of test leaf is very critical. If it is not appropriate to select, it is difficult to truly reflect the photosynthetic rate of plants. Therefore, which representative leaf should be selected, At the same time, the plants should also select plants that can represent most of the leaves. They can only be selected at multiple angles, such as the color and state of the leaves. This is not what we mean here.
Plant leaves are important organs for photosynthesis of plants, and the amount of chlorophyll directly affects the speed of photosynthetic rate. Within a certain range, the more chlorophyll content, the stronger the photosynthetic rate. Therefore, the measurement object of the photosynthesis instrument is generally also directed at the leaves of the plant, so in the selection of the blade, the representative blade should be selected as far as possible. Since the color of plant leaves is a comprehensive manifestation of various pigments in leaves, it is mainly determined by the ratio between the two pigments of green chlorophyll and yellow carotenoids. Therefore, if the test area is mostly yellow pages, yellow pages should be selected. , and most of the area is green, you should choose green leaves. In addition, the extension, contraction, presence or absence of diseases and insect pests, and the width and width of the leaves will directly or indirectly affect the photosynthetic rate. Therefore, when selecting the test blade, it is also necessary to fully consider this.
The net photosynthetic rate and transpiration rate measured by the photosynthesis instrument are measured values ​​per leaf area. Therefore, the determination of the measurement area is an important step in the photosynthesis instrument measurement process. The leaf chamber used should be selected according to the size of the plant leaf. It is the area of ​​the blade that is larger than the measured area of ​​the leaf chamber, then it can be ensured that the leaf chamber is completely filled with the blade. In this case, there is no need to change the area parameter.
In short, in the process of determining the photosynthetic rate of plants using photosynthesis instrument, the choice of test leaf is very critical. If it is not appropriate to select, it is difficult to truly reflect the photosynthetic rate of plants. Therefore, which representative leaf should be selected, At the same time, the plants should also select plants that can represent most of the leaves. They can only be selected at multiple angles, such as the color and state of the leaves. This is not what we mean here.
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