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[Leaf structure and some physiologic characteristics of low temperature wheat germplasm]
Fang Miao1, Songwu Zhang, Changfa Wang
1College of Life Science, Northwest Sci-Tech University of Agriculture and Forestry, Yangling 712100, China. miaofangmf@163.com
Summary
Low temperature wheat germplasm (LTWG) exhibits consistently lower canopy temperatures than high temperature wheat germplasm (HTWG). This difference is linked to distinct leaf structures and enhanced physiological functions in LTWG.
Area of Science:
- Plant physiology
- Agronomy
- Plant anatomy
Context:
- Wheat canopy temperature varies naturally between different germplasms.
- Identifying genetic traits for temperature regulation is crucial for crop adaptation.
Purpose:
- To investigate the physiological and structural differences between low temperature wheat germplasm (LTWG) and high temperature wheat germplasm (HTWG).
- To establish the relationship between canopy temperature, leaf structure, and physiological functions in wheat.
Summary:
- LTWG shows canopy temperatures 1-4°C lower than HTWG.
- LTWG possesses smaller, more compact mesophyll cells with more layers, thinner leaves, and smaller vein intervals.
- LTWG exhibits higher chlorophyll content, net photosynthetic rates, and transpiration rates compared to HTWG.
Impact:
- Reveals that leaf organ structure and physiological functions are closely related to wheat canopy temperature.
- Provides insights into potential breeding strategies for developing wheat varieties with improved temperature regulation and stress tolerance.
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