%0 Journal Article %A DENG Yan-Hong %A GUO Ya-Ning %A HU Xiao-Hang %A WANG Qiu-Hong %A WANG Xiao-Chun %A ZHOU Jian-Chao %T Screening and Variation Analysis of Soil Organic Nitrogen Efficient in Different Beta vulgaris Genotypes %D 2017 %R 10.7525/j.issn.1673-5102.2017.04.012 %J Bulletin of Botanical Research %P 563-571 %V 37 %N 4 %X We used the screening and variation analysis of soil organic nitrogen use efficiency and assimilation efficiency in different genotypes of sugar beet for the cultivation and breeding of high efficient genotypes of soil organic nitrogen. From 2014 to 2015, by the indoor pot experiment or the field experiment, the genotypes with higher and lower efficiency of soil organic nitrogen were screened from 100 genotypes of sugar beet. In the initial screening experiment, the whole plant and root organic nitrogen use efficiency(ONUE) were significantly different between KWS8138, HI0466(the genotypes with higher efficient of organic nitrogen in sugar beet) and BETA176, T230(the genotypes with lower efficient of organic nitrogen in sugar beet) at the seedling stage. In the field experiment, the further screening was taken according the organic nitrogen assimilation efficiency(ONAE). The significant advantage of KWS8138(higher use efficiency of organic nitrogen at seedling stage) was found, with higher assimilation capacity of organic nitrogen, including higher translocation amount of soil organic nitrogen and the reasonable root-shoot ratio after the seedling stage. Because of the lower uptake and use ability of organic nitrogen with BETA176, BETA176 transfer ability of soil organic nitrogen was too low to limit the reasonable utilization of organic nitrogen, which was not conducive to the improvement of the efficiency of organic nitrogen. Therefore, KWS8138 is a highly efficient genotype material of organic nitrogen, and BETA176 is an inefficient genotype of organic nitrogen, which can be used as a material for further experiments. Soil organic nitrogen translocation amount and reasonable root-shoot ratio of higher organic nitrogen efficient genotypes in sugar beet can promote the absorption of organic nitrogen, which is the foundation with the higher efficiency of organic nitrogen. The higher dry matter production efficiency is the key to the efficient utilization of organic nitrogen. %U https://bbr.nefu.edu.cn/EN/10.7525/j.issn.1673-5102.2017.04.012