摘要
[目的]研究硒对烤烟云烟87和红花大金元种子萌发及幼苗生长的影响。[方法]通过不同浓度亚硒酸钠（0、0．5、2．0、4．0、8．0 mg／L）浸种处理，对发芽率、根系和光合色素含量进行探讨。[结果]低浓度处理（0～2．0 mg／L）对2个品种的萌发有促进作用，在硒浓度为2．0 mg／L时发芽率达最大值；当硒浓度为2．0和4．0 mg／L时，云烟87和红花大金元幼苗根系活力分别达最大值，其后随处理浓度的增大幼苗根系活力有所下降；2个品种各处理的光合色素含量均显著高于对照，且在处理浓度为4．0 mg／L时达最大值。[结论]该研究为后期富硒烟叶的生产、卷烟安全性的提高提供理论指导。
Abstract
Objective] To research the effects of Se on seed germination and seedling growth of flue-cured tobacco Yunyan 87 and Honghuada-jinyuan.[Method] After soaked in different concentrations of sodium selenite (0,0.5,2.0,4.0 and 8.0 mg/L),we researched the germination rate,root system and photosynthetic pigment contents.[Result] Low concentration treatment (0-2.0 mg/L) promoted the germination of two cultivars.And the germination rate reached the maximum at 2.0 mg/L Se.When Se concentration was 2.0 and 4.0 mg/L,the root activities of two cultivars reached the maximum,and then reduced as the concentration enhanced.Photosynthetic pigment contents of two cultivars were significant-ly higher than that of control,and reached the maximum at 4.0 mg/L Se.[ Conclusion] This research provides theoretical guidance for the en-hancement of production of selenium enrichment tobacco leaves and the safety of cigarette .
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