不同外源物对干旱胁迫下四季报春种子萌发的影响  

Effect of Different Exogenous Substances on Seeds Germination of Primula obconica Under Drought Stress

作　　者：胡珂雪 张晓曼[1] 俎晓亚 

机构地区：[1]河北农业大学园林与旅游学院,河北保定071000

出　　处：《北方园艺》2017年第6期70-73,共4页Northern Horticulture

基　　金：河北省林业厅科学技术研究资助项目(1402450);河北省教育厅重点资助项目(ZD2016132)

摘　　要：以四季报春(Primula obconica Hance)种子为试材,探索不同浓度CaCl2、SA和GB对9%PEG-6000干旱胁迫下种子萌发的影响。结果表明:9%PEG-6000(CK_2)干旱胁迫下四季报春种子的萌发情况低于空白对照(CK1),用一定浓度的CaCl2、SA和GB分别浸种处理后能促进干旱胁迫下四季报春种子的萌发,且最佳缓解浓度为15mmol·L^(-1)、10mg·L^(-1)、5.0mmol·L^(-1);3种外源物对种子萌发的促进作用以CaCl2效果最佳,SA效果最差。P.obconicaseeds were used as material to explore the effect of different concentrations of CaCl2,SA and GB on seeds germination under drought stress of 9% PEG-6000.The results showed that,seed germination of P.obconica,under drought stress of 9% PEG-6000（CK2）,was significantly lower than that of the blank control group（CK1）;treatments of a certain concentration of CaCl2,SA and GB could promote seeds germination of P.obconica,and the best concentrations were 15mmol·L^-1,10mg·L^-1,5.0mmol·L^-1;the promoting effect of CaCl2 on seeds germination was the best and SA was the worst,between three exogenous substances.

关 键 词：四季报春 干旱胁迫 外源物 种子萌发 

分 类 号：S682.15[农业科学—观赏园艺]