Low Temperature Rather Than Nitrogen Application Mainly Modulates the Floral Initiation of Different Ecotypes of Rapeseed (Brassica napus L.)

Rapeseed has formed three ecological types, namely winter, semi-winter, and spring during the long domestication process. Different ecotypes have different low-temperature requirements for floral initiation. growth a large demand nitrogen, amount of nitrogen application significantly impacts number flowering. Meanwhile, time imitation determined quantity bud, final pods, yield rapeseed. Therefore, it is great significance to understand regulation temperature on This experiment selected representative semi-winter rapeseed varieties study leaf’s soluble sugar protein concentration under supplies transcriptome reactions vernalization in transition The results showed that content carbon-to-nitrogen ratio changed due processes rates. increase peak could be regarded as signal start Reducing rate increased content, but effect appearance was not obvious. Under normal (20–25 °C) low temperatures (10–15 °C), initiation variety “1358” no difference, nor did expression hub gene SOC1, which involved flowering network. “Zhongshuang No. 11” commence because lacking requirement. Low promoted mainly through FLC, LFY signaling pathways, gibberellin also played positive factor this In essence, present provides valuable information differences vernalization-driven when photoperiod an unlimited factor.