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Comparison of Flag Laves' Senescence Among Winter Wheat Varieties

Wang Yunzhi Zhu Hongwei Liu Tianhua (DeZhou AgriculiuraI Bureau Dezhou 253016)  
This paper deals with varing rules of flag leaves photosynthetic rate after winter wheat's f1owering, which can be divided into four patterns:sharp decreasing, rapid decreasing, stable decreasing and slow decreasing.after cluster analysis, 18 varieties can be divided into three kinds:normal senescence,low grade senescence and serious senescence. According to the relationship between flag leaf and grain's filling and maturing, we compared two typical varieties,Lumai l4 and 215953, and drew the conclusion: Appropriate cultivation measures should be adopted in accrordance with different traits between Wheat varieties. The key factor of increasing wheat yield is not extend the growing stage,and is to take appropriate means to induce extending the photosynthetic rate of high level.
【CateGory Index】: S512.110.1
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1 HE Li-xiang;ZHANG Ting;FU Zhao-lin;GONG Jing;SUN Chang-yu;College of Life Science,Huaibei Normal University;Anhui Key Laboratory of Plant Resources and Biology;;Relationship between Etiolation Rate of Flag Leaf at Middle Grain-filling Stage with Grain Yield and Some Quality Traits in Wheat[J];麦类作物学报;2013-06
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