Light Intensity on Flag Leaf Photosynthetic Characteristics and Water Use of Two Spike-type Cultivars of Winter Wheat

doi:10.7668/hbnxb.2008.02.002

Abstract

Abstract: Flag leaf photosynthetic characteristics and water use were investigated in different light intensity in two spike-type wheat(Triticum aestivum L.)varieties,Lankaoaizao 8 and Yumai 49.The results showed that,at anthesis,with increasing light intensity,there were increases in photosynthetic rate,stomatal conductance,transpiration rate and water use efficiency.They would decrease if light intensity was increased to a limited light intensity.But intercellular CO2 concentration decreased with increasing light intensity.Compared with Yumai 49,flag leaf of Lankaoaizao 8 had higher photosynthetic characteristics and water use in higher light intensity.

Key words: Winter wheat, Photosynthetic characteristics, Water use, Light intensity

CLC Number:

S512.01

YANG Wen-ping, GUO Tian-cai, LIU Sheng-bo, ZHU Yun-ji, WANG Chen-yang, WANG Yong-hua. Light Intensity on Flag Leaf Photosynthetic Characteristics and Water Use of Two Spike-type Cultivars of Winter Wheat[J]. ACTA AGRICULTURAE BOREALI-SINICA, 2008, 23(2): 9-11. doi: 10.7668/hbnxb.2008.02.002.

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