外来植物粉花月见草种子萌发特性的研究  

Study on characters of seed germination of Oenothera rosea

作　　者：韦美玉[1] 王玉林[2] 刘丽萍[1] 

机构地区：[1]黔南民族师范学院生命科学系,贵州都匀558000 [2]黔南民族师范学院化学系,贵州都匀558000

出　　处：《广东农业科学》2011年第14期50-52,共3页Guangdong Agricultural Sciences

摘　　要：对粉花月见草种子在常温、低温处理下进行不同光照、温度、盐分、浸种方式的萌发试验研究。结果表明:常温处理全黑暗、全光照、自然光萌发率3%、78%、94%,发芽指数8.4、9.4、0.4;常温处理10℃、25℃、35℃萌发率71%、87%、16%,发芽指数4.7、5.7、1.6;常温处理0.01 mol/L盐胁迫萌发率84%,发芽指数7.2,随浓度升高而逐渐下降;3种浸种方式种子萌发率90%以上;低温处理萌发高峰提前且峰值高、萌发率、发芽指数上升。说明光照、一定温度范围内、低盐胁迫及浸种促进种子萌发,萌发率高,萌发速度快,有休眠特性,短期低温层积可解除休眠特征,快速蔓延成为入侵种。The experiment was conducted in order to determine the effect of different light,temperature,salinity and the method of seed soaking on seed germination under normal or low temperature.The results showed that： the seed germination rate under the treatment of normal temperature was respectively 3%,78% and 94% under the condition of complete dark,complete lighting and natural illumination and the seed germination index was respectively 8.4、9.4、0.4 under the same conditions.The seed germination rate was respectively 71%,87%,16% and the seed germination index was respectively 4.7,5.7,1.6 under the treatment of 10℃,25℃,35℃.In the normal temperature,the germination rate was 84% and the germination index was 7.2 under 0.01 mol/L salt stress.As the concentration of NaCl steped up,the germination rate decreased.The germination rate was over 90% in three methods of seed soaking.Under the low temperature treatment,the peak time of germination was in advance,the peak value was high,the germination rate and germination index upgraded.The illumination facilitate the seed germination,unvarying temperature range,low salt stress and the method of seed soaking encouraged seed germination.had characters of high germination rate,quick germination speed and quiescence.It turned into germinate from quiescence after short-term low temperature.It invaded quickly and became invasive species.

关 键 词：外来植物 粉花月见草种子 光照 温度 盐胁迫 

分 类 号：S451[农业科学—植物保护]