Study on Photosynthetic Characteristics of Gesneriaceae Plants by Photosynthesis Instrument
The medicinal value of Gesneriaceae is very high, and it has scientific research protection value. Its research focuses on geographical distribution, systematic evolution, and plant taxonomy. The family of plants mainly contains flavonoids, with many functions such as heat, cough, asthma, blood circulation and tonicity. In addition, Gesneriaceae plants are highly appreciated by flower lovers for their colorful flowers, unique leaves, and compact plants, such as the famous ornamental plant Asteris in the family Gesneriaceae. It is worth mentioning that the species of Gesneriaceae have very special habitats. Most of them are born in the wet slopes or in the vicinity of caves. There are also many species that grow on harsh cliffs, and most species have Extremely shade-resistant, distributed in the shade or scattered light. Surviving in such a special habitat, Gesneriaceae plants certainly have their own unique adaptation mechanism, and its strong shade-resistance mechanism is one of the contents worthy of study. The analysis of its photosynthesis was performed using a photosynthesis instrument. Add Wechat to give you more professional information:
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The photosynthetic rate of four species of Bitteraceae was measured using a photosynthesis instrument. The daylight conditions were selected and the daylight was sufficient. The net photosynthetic rate of four species of Bacaceae was determined under natural outdoor light intensity. (Pn) Changes during the day. Measured from 07:00 to 18:00, measured on the same leaf every 1 h, simultaneously measured photosynthetically active radiation (P}}, leaf surface temperature (Tte}r }, relative humidity (H,), ambient COZ concentration (C), leaf and air vapor pressure deficit (VPD) and other related parameters. Fully-expanded leaves were selected for the measurement, and each measurement was required to be stable. Only after 3 minutes can data collection be started.
Photosynthesis analysis showed that photosynthesis is the basis of plant growth and development and the decisive factor in the level of productivity, but also a physiological process that is sensitive to changes in environmental conditions [Date 7.4 variety of net photosynthetic rate of Brassicaceae plants The curves are all bimodal curves with "noon" phenomenon. Analyze the reasons for the "noon" phenomenon: it may be that the higher light radiation in Jinhua region forms photoinhibition during the experimental period; Reduced humidity, dark breathing, and increased photorespiration rate led to a decrease in photosynthetic rate [00; it may also be due to increased light intensity, and increased photosynthetic intensity, making the environmental COz rapidly utilized, but the COz content in the small environment is limited Therefore, the photosynthesis of the bitter Brassicaceae plants is low, and COz is the limiting factor for the photosynthesis of the leaves of Brassicaceae in the small environment. 