Flowering is an important reproduction and development characteristic of oilseed rape. Flowering time is controlled in a multiple gene form with locus variation between different varieties and affected by environment factors. Studies on flowering time may help breed varieties suitable to crop rotation and manipulate pollination control systems in hybrid breeding and production.In this paper 78 oilseed rape lines with different flowering time were studied in Wuhan and Xining in 2003-2005 and molecular polymo...