吸湿-回干处理对人工老化翠菊种子活力的影响  

Effect of Moisture-absorbing and Dehydration Treatment on the Vigor of Artificial Aging Aster Seed

作　　者：侯建伟[1] 董礼华 

机构地区：[1]吉林农业大学园艺学院,吉林长春130118 [2]吉林省长春市种子管理站,吉林长春130012

出　　处：《安徽农业科学》2009年第27期13043-13044,共2页Journal of Anhui Agricultural Sciences

基　　金：吉林省科技厅科技支撑项目(20060222-2)

摘　　要：[目的]研究人工老化及吸湿-回干处理对翠菊种子活力的影响,旨在为合理的贮存与使用翠菊种子提供科学依据。[方法]供试种子在45℃、100%RH下进行老化处理。老化后种子在20℃条件下进行吸湿,25℃下回干及发芽测定。[结果]试验结果表明,在45℃、100%RH高温高湿条件下处理翠菊种子,对翠菊种子有快速老化的作用,其主要的活力指标呈明显降低趋势,随着老化处理时间的延长,种子的发芽指数(F=1 257.73>F0.01=4.82)与活力指数(F=385 614.42>F0.01=4.82)明显下降。老化处理时间达到60 h后,翠菊种子的发芽率只剩下50%。对经过人工老化后吸湿-回干处理的翠菊种子进行发芽率(F=600.06>F0.01=4.82)和发芽势(F=543.44>F0.01=4.82)的测定显示,经吸湿-回干处理后可以明显缓解高温对种子劣变的影响,不同程度地提高发芽率与发芽势。[结论]吸湿-回干处理可部分消除高温高湿对翠菊种子所造成的伤害,明显提高翠菊种子的活力。[ Objective ] The scientific basis of reasonable store and use of the aster seed was provided through the study on the effect of the moisture absorption-dehydration treatment on the vigor of the artificial aging aster seed. [ Method ] The artificial aging treatment of aster seeds was conducted in 45 ℃ and 100% relative humidity; then the moisture in seeds was absorbed at 20℃, and finally, the germination rate of the seeds was tested after they were dehydrated at 25℃. [ Results] The results showed that the treatment of 45℃ and 100% RH to seeds could speed up the seeds aging, in which, main indicators of the vitality of the seeds was significantly reduced, and with the time-extending of aging treatment, the seed germination index（F = 1 257.73 〉 F0.01 =4. 82） and vitality index（F =385 614. 42 〉 F0.01 =4. 82） were significantly decreased. The germination rate of the seeds was only 50% after the processing time was 60 hours. The measurement of the aster seed germination rate （ F = 600.06 〉 F0.01 = 4. 82） and germination energy （ F = 543. 44 〉 F0. 01 = 4. 82 ） after the treatment procedure mentioned-above indicated that the moisture absorption-dehydration treatment could significantly release the seed deterioration impacted by heat and the germination rate and germination energy could be improved to varying degrees. [ Conclusion ] The moisture absorption-dehydration treatment could partially release the damage of heat to aster seeds and markedly improve the vitality of seed.

关 键 词：翠菊 种子 人工老化 吸湿-回干 

分 类 号：S682.1[农业科学—观赏园艺]