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《Journal of Agricultural University of Hebei》 2005-05
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Comparison of the morphology and biochemical characteristics of wheat seedlings between drought-resistant and drought-sensitive varieties under PEG water-stress

WANG Jin,LIU Gui-ru,YANG Xue-ju(College of Agronomy,Agricultural University of Hebei,Baoding 071001,China)  
The seeds of six wheat varieties were treated with different concentrations of PEG in the MS medium,and both the morphology and biochemical characteristics of the seedlings were analyzed after 25 days.The results indicated that with the PEG water-stress,the drought-resistant wheat variety showed stronger growing tendency in terms of leaf number,root length,leaf length and coleoptile length,lower MDA content,higher SOD and POD activity compared with drought-sensitive one.The difference between drought-resistant wheat and drought-sensitive wheat was obvious if PEG concentration were increased.It is concluded that the indexes of water-stress such as leaf number,root length,leaf length and coleoptile length,relative MDA content,relative SOD and POD activity between drought-resistant wheat and drought-sensitive wheat can be used to identify drought resistance,under 100 g/L PEG-6000 water-stress.
【Fund】: 河北省自然科学基金资助项目(303184)
【CateGory Index】: S512.1
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