玉米中胚轴长度与内源激素关系的研究  

Relationship Between the Mesocotyl Elongation and Hormones in Maize(Zea mays L.)

作　　者：杜金友[1] 张桂荣[1] 蔡爱军[1] 刘艳芳[1] 高桂花[2] 靳占忠[2] 

机构地区：[1]河北科技师范学院生命科学系,河北秦皇岛066600 [2]河北科技大学,石家庄050035

出　　处：《玉米科学》2008年第3期70-73,共4页Journal of Maize Sciences

基　　金：河北省自然基金(303451);河北科技师范学院博士基金

摘　　要：选用5个春播玉米品种,分别在26℃光照和黑暗条件下培养,测定中胚轴长度以及内源激素含量。结果显示,光照对玉米中胚轴长度有明显的抑制作用,是明显的光控调节途径。黑暗条件下5个品种玉米中胚轴长度随幼苗生长而伸长。中胚轴内源激素是调控其长度的重要物质。其中内源激素生长素(IAA)呈极显著正相关,认为IAA起主要促进作用。其中SN40×Mo17变化最显著,开始时IAA含量少、脱落酸(ABA)抑制中胚轴生长,但随着幼苗生长,IAA含量增多,促进其伸长。The mesocotyl elongation and hormones of five spring maize inbred lines had been measured in light and dark conditions at 26℃ o The results indicated that light significantly lower the level of the mesocotyl elongation of maize. This is obvious photomorphogenic responses pathways. The mesocotyl elongation elongated with maize seedling growing in dark conditions. The endogenous hormones are an important factor to regulate the mesocotyl elongation of maize. IAA content was significantly positive correlation （r=0.639^＊＊） and IAA play a major role in regulation. Mesocotyl elongation of SN40 × Mo17 notably changed.

关 键 词：玉米 中胚轴 赤霉素 生长素 脱落酸 

分 类 号：S513.01[农业科学—作物学]