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吉林省教育厅资助项目(200828)

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相关作者:刘俊华金丽虹申炳俊李景梅田坚更多>>
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发文基金:吉林省教育厅资助项目吉林省科技发展计划基金吉林省科技厅科技发展计划项目更多>>
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Nd:YAG倍频激光辐照对白菜种子萌发及幼苗叶绿素的影响被引量:4
2010年
利用波长为532nm的Nd:YAG倍频激光对白菜种子胚进行辐照处理,发现2~20mW/mm2功率密度激光,辐照1~5min均会对白菜种子的发芽率、白菜幼苗的功能叶片面积及叶绿素含量、白菜幼苗的游离氨基酸含量产生影响.激光辐照可影响白菜种子萌发和幼苗的生长发育.其中,14mW/mm2激光辐照1min(辐照剂量为2.8J)的处理效果最佳,种子发芽率、功能叶片面积和叶绿素含量增加幅度分别为17.0%,13.3%,10.5%.激光对游离氨基酸的影响表现为剂量效应,0.4~2.8J激光辐照干扰了白菜机体的正常代谢,3.6~20J的辐照可使机体代谢遭到破坏;激光辐照导致叶绿素生物合成过程中酶的活性发生变化可能是叶绿素含量增加的主要因素.
金丽虹申炳俊刘俊华赵新乐于源华李景梅田坚
关键词:白菜发芽率叶绿素游离氨基酸
Effect of 532 nm Laser Irradiation on Vc Content in Cabbage Seedlings被引量:2
2009年
[ Objective ]The aim of this study was to discuss the feasibility of breeding cabbage with high Vc by 532 nm laser.[ Method ] With the material of cabbage, the embryo of cabbage seeds was irradiated by frequency doubled Nd :YAG laser with different power densities and time, and the effects of laser mode on functional leaf area, chlorophyll and Vc contents in cabbage seedlings were also studied. [Result] The results showed that functional leaf area and chlorophyll content were related to laser power density and time when laser power density was 2 -20 mW/mm^2, while the optimal effect was observed at 14 mW/mm^2 for 1 min. The content of Vc in cabbage seedlings was related to dosage of laser irradiation when irradiating time ranged from 1 to 5 min, and the optimal effect was observed at 2.8 J (20 mW/mm^2, 3 min). [Conclusion] Irradiating the embryo of cabbage seeds with proper irradiation dosage of 532 nm laser can increase its effect on the Vc content significantly.
金丽虹申炳俊刘俊华赵新乐李景梅田坚
关键词:VCCHLOROPHYLL
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