Efficient root nitrogen transport is a key factor in improving nitrogen utilization and yield of semi-dwarf rapeseed

Abstract

Rational allocation of nitrogen (N) application rates and planting densities is crucial for improving rapeseed yield. However, an increased N application rate reduces N use efficiency (NUE), and a higher planting density elevates the risk of lodging, thus limiting production benefits. Dwarf and compact rapeseed varieties exhibit high lodging resistance but possess low yield potential, while cultivars with conventional plant architecture possess high yield potential but are susceptible to collapse under dense planting. Limited research exists on utilizing the advantages of materials with different plant architectures to enhance N utilization and yield in rapeseed.