Title: Effect of nitrogen levels in spike stage on differentiation and degeneration of branches and spikelet of hybrid rice cultivar Liangyoupeijiu
Abstract: Effects of different nitrogen levels(0,45,90,135 and 180 kg/hm2) in spike stage on differentiation and degeneration of branches and spikelet of hybrid rice cultivar Liangyoupeijiu was studied under the condition of field environment.The results showed that the seed setting rate of the hybrid rice deceased with increasing of nitrogen levels during panicle differentiation stage,while numbers of the primary and secondary branches and grain numbers per panicle increased first and decreased later.Nitrogen application could increase differentiation and degeneration of the secondary branches.Relationship of differentiation,degeneration of the secondary branches and nitrogen levels showed a linear positive correlation(r=0.7752,0.8770,respectively).The degeneration of the secondary branches mainly occurred on the primary branches of basal panicle.Increasing of nitrogen levels in spike stage increased the degenerate rate of the secondary branches on the top panicle and degenerate number of spikelet.No application of nitrogen on panicle stage,more degenerate florets of the secondary spikelet and less degenerate florets of the primary spikelet occurred.Nitrogen application could cause more degeneration of the primary spikelet on top panicle.
Publication Year: 2008
Publication Date: 2008-01-01
Language: en
Type: article
Access and Citation
Cited By Count: 2
AI Researcher Chatbot
Get quick answers to your questions about the article from our AI researcher chatbot