2010•Guizhou nongye kexueRequires access
Photosynthetic difference of leaves with different leaf position in wheat.
Han Jie, Jun Meng, WU Wan-peng, Han Juan, WU Yan-hua, Ling Wang
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Abstract
The photosynthetic parameters of photosynthetic rate,stomatal conductance and transpiration rate of last three leaves(first Leaf,L2 and L3) on the main stem of Luohan 7(a wheat variety) were determined by Lcpro+photosyntometer under 1505μmol/(m2·s) and 20℃ to study photosynthetic physiological characteristics of wheat leaves with different leaf position.The results showed that there was significant difference in these photosynthetic parameters between different leaves,the leaf photosynthetic rate was first Leafthird Leafsecond Leaf intercellular CO2 concentration was second Leafthird Leaffirst Leaf transpiration rate was first Leafthird Leafsecond Leaf,and stomatal conductance was first Leafthird Leafsecond Leaf.There were positive correlations between photosynthetic rate and transpiration rate,stomatal conductance while there was a negative correlation between photosynthetic rate and intercellular CO2 concentration