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Changes of Seed Quality and Cadmium Content of Different Peanut Genotypes under Cadmium Stress

YANG Zhi-yi1,2,WAN Shu-bo3,FAN Zhong-xue4,YAN Cai-xia2,LI Chun-juan2,SHAN Shi-hua2(1.Ocean University of China,Qingdao 266100,China;2.Shandong Peanut Research Institute,Qingdao 266100,China;3.Shandong Academy of Agricultural Sciences,Jinan 250100,China;4.High-tech Research Center of Shandong Academy of Agricultural Sciences,Jinan 250100,China)  
The pot experiment was conducted to study the effects of cadmium stress on seed quality and cadmium content of five peanut genotypes.The results indicated that within the range of test Cd concentrations,the Cd content in peanut seed increased significantly with the increasing of Cd concentration in soil(P0.05),and the seed could accumulate Cd more easily when the soil Cd concentration was lower than 3 mg/kg,but the accumulation ability differed significantly within genotypes(P0.05).Cd stress had obvious effects on the seed protein and unsaturated fatty acid contents,but the effects differed within genotypes.KB054 was the strongest Cd-tolerance genotype among the tested five peanut genotypes.
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