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《Journal of Nuclear Agricultural Sciences》 2015-10
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Drought Resistance Identification of Different Flax Varieties in Seed Germination Stage

YAO Yubo;Industrial Crops Institute of Heilongjiang Academy of Agricultural Sciences;  
In order to evaluate the drought resistance of different flax varieties,PEG- 6000 was used to simulate drought stress in this experiment. Germination energy,germination rate,bud length,germination index and vitality index were studied under different PEG- 6000 concentrations. Results showed that all of these indices decreased with increasing of PEG- 6000 concentration and seeds germination were stopped when PEG- 6000 concentration reached 25%. The 20%PEG- 6000 concentration had a significant influence on the drought resistance identification indices of flax at germination stage,and was suitable for drought resistance identification. After relative germination energy,relative germination rate,relative bud length,germination index and vitality index of 11 flax varieties were determined under20% PEG- 6000 concentration combined with membership function method,three drought tolerant varieties( HY14,HY16,New),two relatively drought tolerant varieties( HY19,Argtha),three intermediate type varieties( HY20,SY13,Diane),two relatively drought sensitive varieties( HY11,HY18),and one drought sensitive varieties( HY17)were identified out. The results will provide theoretical basis for breeding drought resistant varieties and drought resistance mechanism.
【Fund】: 哈尔滨市科学技术局科技创新人才项目(2014RFQYJ008);; 国家麻类产业技术体系资助项目(CARS-19-S03)
【CateGory Index】: S563.2
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