不同品种氮素累积量及转移的基因型差异  

Genotype Difference of Nitrogen Accumulation and Translocation Between the Cultivars with Different Nitrogen Efficiency

作　　者：蔡红光[1,2] 张秀芝[1] 任军[1] 高强[3] 陈范骏[2] 米国华[2] 

机构地区：[1]吉林省农业科学院农业环境与资源研究中心,长春130033 [2]中国农业大学植物营养系/农业部植物营养学重点实验室/教育部植物-土壤相互作用重点实验室,北京100094 [3]吉林农业大学资源与环境学院,长春130118

出　　处：《玉米科学》2011年第6期49-52,共4页Journal of Maize Sciences

基　　金：国家重点基础研究发展计划课题(2009CB118601);国家科技支撑计划课题(2011BAD16B10)

摘　　要：以4个不同氮效率玉米品种为试验材料,对其吐丝前后氮累积量和氮转移的基因型差异进行分析。结果表明,吉单209耐低氮能力较强;四密25对增施氮肥反应敏感,增施氮肥后增产幅度较大,表现出明显的喜氮特性。吐丝之后氮累积量较少的基因型,其相应的产量也较低。高产品种的选育应侧重花后氮素吸收,同时对于现有高产品种也应侧重花期氮肥的追施。In order to evaluate the genotypic difference of nitrogen accumulation and translocation around silking, an experiment was carried out, taking four hybrid maize cultivars with different nitrogen efficiency. The result indicated that the tolerance to low nitrogen stress of JD209 was higher than other cultivars. SM25 was more sensitive with the increasing of nitrogen input and the grain yield increased after application of N fertilizer. The genotype with low N accumulation had lower grain yield. The breeding with higher grain yield should be emphasize particularly the N accumulation after,flowering and the high- yield varieties also should he emphasize particularly the application N fertilizer after flowering.

关 键 词：玉米 氮素累积 氮素转移 

分 类 号：S513.01[农业科学—作物学]