低温胁迫对不同品种玉米苗期根系性状的影响  

Effect of Low Temperature on Different Type of Maize

作　　者：曹宁[1] 张玉斌[1] 闫飞[1] 杨振明[1] 

机构地区：[1]吉林大学植物科学学院,长春130062

出　　处：《中国农学通报》2009年第16期139-141,共3页Chinese Agricultural Science Bulletin

基　　金：公益性行业(农业)科研专项(200803030);粮食丰产科技工程重大科技专项(2006BAD02A10-6-4)

摘　　要：通过室内模拟低温条件下的盆栽试验,研究不同品种玉米(先玉335,农大364)苗期根系生长对温度的响应。结果表明,在低温胁迫下,两个玉米品种苗期根表面积、根体积、轴根长都明显低于常温处理,但不同品种玉米总根长和侧根长对温度的反应程度存在明显差异,低温对农大364侧根生长明显促进作用,而对先玉335侧根生长有明显抑制作用。低温胁迫减弱了玉米根系的生长,同时对地上部的生长有明显的抑制作用,进而根冠比显著增大。Root growth, shoots and roots biomass of spring maize （Nongda 364, Xianyu 335） were investigated with a pot experiment simulating low temperature stress. The experiment results showed that low temperature restrained root surface, root volume and length of axile root. There was significant genotypic variation in total root length and lateral root length in response to low temperature stress. The results showed that low temperature stimulated lateral root growth of Nongda 364, but inhibited lateral root growth of Xianyu 335. Analysis of biomass indicated that low temperature stress increased root/shoot.

关 键 词：低温胁迫 玉米 根系 

分 类 号：S513[农业科学—作物学]