Nitrogen Redistribution Characteristics of Oilseed Rape (Brassica napus L.). Varieties with Different Nitrogen-Use Efficiencies during Later Growth Period
National Natural Science Foundation of ChinaNational Natural Science Foundation of China (NSFC) [30971860]; Industry Technology System of Rapeseed, Agriculture Ministry of China [00509]; National Natural Science Foundation in Hunan [07JJ3074]; National "863 Project"National High Technology Research and Development Program of China [2006BAD21B03]; major Science and Technology Project of Hunan [2009FJ1006-1, 2009FJ1006-3]; Innovation and Technology Fund Supports Projects Institution of Higher Learning in Hunan Province [09K049]
机构署名：
本校为第一且通讯机构
院系归属：
资源环境学院
摘要：
To determine the relationship between nitrogen (N) redistribution of oilseed rape (Brassica napus L.) varieties and N-use efficiency during later growth stages, the differences in N-use efficiency between two varieties (X-36 and X-50) were studied using the 15N labeling method with sand culture under complete nutrient solution conditions. Results showed that X-36 had greater grain yield not because of greater N uptake but because of greater grain yield per unit N in the plant and N-harvesting index. The average proportion of N in the two varieties that was redistributed from the vegetative org...
