摘要
为研究不同低温条件对玉米苗期根系生长的影响,选用黑龙江省种植面积较大的金玉5号、兴垦3、吉单198三个玉米品种为试验材料,通过水培方法,研究了三种低温胁迫水平下(18℃/9℃、16℃/7℃、14℃/5℃(昼/夜))玉米的苗期根系性状。结果表明:金玉5号的耐低温自动调节能力较强。三种类型的玉米在各温度胁迫下苗期根系活力随时间延长呈现先增高后降低的趋势,不同品种的玉米根系的长度、表面积、体积在低温下呈现不同程度的降低趋势,低温胁迫下阻碍了根系的生长。
In order to study the effect of different temperature conditions on root growth of maize seedling,three different maize varieties（Jinyu 5,Xingken 3,Jidan198）were selected to research the effect of low temperature on maize root growth at seeding stage.The maize seedling root related traits were studied by using the method of submerged culture under three low temperature stress level（18℃/9℃,16℃/7℃,14℃/5℃（day/night））.The results showed that Jinyu 5had strong resistance to low temperature.Root activity of three maize varieties in seedling present the trend to increase after the fall.Root length,surface area and volume rendering of different maize varieties present the different degrees of lower tendency.Low temperature stress hindered the growth of root.
出处
《黑龙江农业科学》
2016年第2期15-17,共3页
Heilongjiang Agricultural Sciences
基金
国家科技支撑计划资助项目(2011BAD32B03-02)
关键词
玉米
低温胁迫
根系生长
maize
low temperature stress
root growth
