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《Journal of Anhui Agricultural Sciences》 2008-20
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Water Permeability of Seed Coat and Bio-effect of Seed Extracting Solution of Acer mono Maxim

ZHANG Jun-bao et al (Key Laboratory of Forest Tree Genetic Improvement and Biotechnology,Ministry of Education(Northeast Forestry University),School of Forestry,Northeast Forestry University,Harbin,Heilongjiang 150040)  
[Objective] The research aimed to provide biological support for dormancy releasing and germination promotion of seeds of Acer mono Maxim.[Method] Intact seeds and coat-pricked seeds were soaked by distilled water and weighed for water absorbing content for analyzing water permeability of seed coat.Seeds in low-temperature stratification were sampled periodically and grinded for solution extracting by methanol.The inhibition effect of seed extracting solution to seed germination of Chinese cabbage was tested by germination experiment.[Result] Water permeability of A.mono seed coat was increased along with soaking time and both intact and coat-pricked seeds were saturated within 12 h.Seed extracting solution of A.mono inhibited seed germination of Chinese cabbage severely.The inhibition intensity decreased with concentration diminish of seed extracting solution and time prolong of low-temperature stratification,but the extent of the decrease was slow within 60 days of stratification.At 80 days of stratification,there was no significant difference for germination rate of Chinese cabbage between 10% and 20% seed extracting solution and control,but the germination rate for 100% solution was only 35% for that of control.[Conclusion] Water permeability of seed coat was not the cause of seed dormancy of A.mono.Inhibition substances in seed and the degradation of the substances during stratification were the main causes of seed dormancy of A.mono.
【Fund】: 东北林业大学学术名师专项基金
【CateGory Index】: S792.35
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