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《Journal of Anhui Agricultural Sciences》 2010-28
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Study of Seed-set Rate and Seed Germination Characteristics of Cosmos bipinnatus Cav. in Kunming

DU Shou-hui et al (Life Science School of Yunnan University,Kunming,Yunnan 650091)  
[Objective]The research aimed to study the natural seed-set rate and the seed germination characteristics of Cosmos bipinnatus Cav.in Kunming,Yunnan Province.[Method]The fresh fruits were gathered in the field,and the statistics of the natural seed-set rate was analyzed,the seed germination characteristics were studied with different concentrations of GA3 in manual control situation.[Result]The natural seed-set rate was 54.52% .GA3 concentration in 80 mg/L had the best impact on seed germination,and it accelerated the seed germination.The lower concentrations of GA3 and water were less affected on the germination rate.[Conclusion]The seed-set of Cosmos bipinnatus was affected by surrounding temperature,and GA3 concentration was the important factor on seed germination.
【Fund】: 国家级大学生创新性实验计划项目(91067318)
【CateGory Index】: S682.11
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