低温预处理对刺槐种子活力和幼苗生长的影响  

The effects of pre-chilling treatment on seed vigor and Young seedling growth of Robinia pseudoacacia

作　　者：曹帮华[1] 吴丽云[1] 杨娟[1] 

机构地区：[1]山东农业大学林学院,山东泰安271018

出　　处：《山东科学》2005年第4期48-51,共4页Shandong Science

基　　金：科技部资助项目:黄河三角洲刺槐林优化栽培与综合开发(02EFN216700794).

摘　　要：采用低温(3～5℃)预处理刺槐种子能显著提高种子的萌发率和萌芽活力,其中以处理5 d的效果最好.经低温处理的种子发芽时间缩短,发芽高峰出现的早,发芽指数和活力指数均明显高于对照;质膜透性减弱,外渗液电导率降低;幼苗的逐日生长量大、平均生长量较对照高.表明种子萌发前经低温预处理能有效提高种子活力水平,有利于好苗、壮苗的形成.Robinia pseudoacacia seeds were treated with pre-chilling （3-5℃） ,which can obviosly raise the germinating capacity and the growth of seedlings. Results showed that the best treatment time was 5 days. The mean germination time of seeds treated with pre-chilling was shorter than CK, the germination peak appeared earlier than CK; the germination capacity and vigor index were higher than CK, while the relative permeability of cell membrane was decreased, the conductivity rate was lower than CK; the day-growth increasement of seedlings was much higher than CK.

关 键 词：刺槐种 低温预处理 种子活力 幼苗生长 

分 类 号：S565[农业科学—作物学]