摘要
在低氮胁迫条件下,对25个玉米自交系穗三叶叶绿素含量、光合速率等进行了研究。结果表明:不同玉米自交系穗三叶叶绿素含量的降低呈现相似的规律性,光合速率也出现不同程度的降低,不同自交系间降低的幅度存在较大差异。穗位叶叶绿素含量的降低可作为氮素利用效率的次级选择指标,以穗位叶叶绿素含量降低的百分率为指标,将供试材料分成4类,其中许178、辽5114等自交系叶绿素含量降低幅度较小,具有较高的氮素利用效率。
Under low nitrogen condition, the photosynthetic productivity and the content of chlorophyll in the three leaves of ear were studied in maize inbred lines. The photosynthetic productivity and the content of chlorophyll in the three leaves of ear all dropped contrast with the control. Using the percentage of dropped content of chlorophyll as the criterion, 25 inbred lines could be divided in 4 groups, the maize inbred lines Xu 178 and Liao 5114 had high nitrogen utilization.
出处
《华北农学报》
CSCD
北大核心
2005年第5期10-12,共3页
Acta Agriculturae Boreali-Sinica
基金
国家863重大专项项目资助(2002AA207008)
关键词
玉米自交系
低氮胁迫
叶绿素含量
光合速率
Maize inbred lines
Low nitrogen stress
The content of chlorophyll
Photosynthetic productivity
