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《Chinese Agricultural Science Bulletin》 2015-33
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Evaluation of Drought Stress of Hemp at Seed Germination Stage Under PEG Simulation

Du Guanghui;Zhou Bo;Yang Yang;Deng Gang;Liu Feihu;School of Agriculture, Yunnan University;  
Seed germination stage is a critical period of the growth and development of hemp, the drought hasan important effect on the growth and yield of hemp at this stage. In this experiment, 10 hemp varieties werechosen as the test materials to evaluate the drought resistance at seed germination stage by the method of PEG-6000 simulation. The results showed that 5 hemp varieties of good germination and drought resistance underhigh osmotic potential were selected. In the evaluation of drought stress on hemp at seed germination stageunder different concentrations of PEG, low concentrations of PEG could promote the seed germination, andwith the increase of PEG concentration, the stress on seed germination was greater. When the PEGconcentration was 20%, the difference of germination index among different varieties was significant, so thisconcentration could be the appropriate concentration for screening and identification the drought-resistanthemp varieties(lines). Using the membership function value method, 3 hemp varieties in Yunnan showed astrong drought resistance, and‘Yunwan 6'was the best one.
【Fund】: “国家麻类产业技术体系建设专项资金”(CARS-19);; 云南大学校基金
【CateGory Index】: S563.3
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