Chrome Extension
WeChat Mini Program
Use on ChatGLM

Changes in Photosynthetic Characteristics of Paeonia suffruticosa under High Temperature Stress

AGRONOMY-BASEL(2022)

Cited 5|Views19
No score
Abstract
This study explored the changes in the photosynthetic characteristics of the Fengdan peony under high-temperature stress to provide a reference for understanding the tolerance of peony plants under heat stress. In this study, the effects of high-temperature stress (40 degrees C) on the photosynthetic characteristics of the Fengdan leaves were studied. At 25 degrees C, the net photosynthetic rate (Pn), stomatal conductance (Gs), and transpiration rate (Tr) of the leaves decreased gradually with the increase in heat stress time, and intercellular CO2 concentration (Ci) decreased first and then increased. High-temperature stress reduced the light energy absorption (ABS/RC) and capture (TRo/RC), light energy for electron transport (ETo/RC), and heat dissipation (DIo/RC) per unit leaf area. The maximum photochemical efficiency (F-V/F-M), leaf photochemical performance index (PIabs), the probability that captured excitons can transfer electrons to other electron acceptors in the electron transport chain beyond Q(A) (psi(o)), and the quantum yield for electron transport (phi Eo), decreased gradually. The results showed that high temperatures damaged the photosynthetic capacity of the peony leaves and destroyed the photosynthetic apparatus of leaves. This study provides a reference for understanding the photosynthetic characteristics and tolerance of peony plants under heat stress.
More
Translated text
Key words
tree peony,high temperature stress,photosynthetic characteristics,chlorophyll fluorescence induction kinetics,JIP-test
AI Read Science
Must-Reading Tree
Example
Generate MRT to find the research sequence of this paper
Chat Paper
Summary is being generated by the instructions you defined