Differences of nitrogen efficiency of rapeseed cultivars and their physiological properties
Differences of N efficiency of oilseed rape (Brassica napus L.)varieties and their physiological properties were studied using a pot experiment and the ratio of seed yield with stressed nitrogen to that with normal N supply was adopted as nitrogen efficiency coefficient. Results showed that the determined nitrogen efficiency coefficient of 8 rapeseed varieties varied from 0.37 to 0.69, the ratio of nitrogen uptake amounts per plant under N stressed condition to that with normal N supply were different. The higher the nitrogen efficiency, the higher their ratio. Under low nitrogen-supplying condition, high nitrogen efficiency varieties had longer roots, more lateral roots, higher niwate reuse amounts in stem and leaves and niwate reductase activities in leaves.
Brassica napus L Nitrogen efficiency Nitrogen efficient coefficient Physiological fundamentals
SONG Haixing GUAN Chunyun LIU Qiang RONG Xiangmin CHEN Sheyuan PENG Jianwei XIE Guixian
College ofResource and Environment, Hunan Agricultural University, Changsha, 410128 National Center of Oilseed Crops Improvement, Hunan Branch, Changsha, 410128
国际会议
第十二届国际油菜大会( The 12th International Rapeseed Congress)
武汉
英文
1080-1083
2007-03-26（万方平台首次上网日期，不代表论文的发表时间）