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中国农学通报

中国农学通报 ›› 2009, Vol. 25 ›› Issue (16): 139-141.

所属专题： 玉米

• 农学 农业基础科学 • 上一篇    下一篇

低温胁迫对不同品种玉米苗期根系性状的影响

曹 宁,张玉斌,闫 飞,杨振明   

  • 收稿日期:2009-05-26 修回日期:2009-06-06 出版日期:2009-08-20 发布日期:2009-08-20

Effect of low temperature on different type of maize

Cao Ning, Zhang Yubin, Yan Fei, Yang Zhenming   

  • Received:2009-05-26 Revised:2009-06-06 Online:2009-08-20 Published:2009-08-20

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摘要： 盆栽试验研究了低温对不同玉米品种（农大364，先玉335）苗期根系发生发育及生物量的影响。结果表明：在低温胁迫下，玉米苗期根表面积、根体积、轴根长都明显低于常温处理。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。

关键词: 土地储备, 土地储备, 成本, 土地开发

Abstract: 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 result 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.