With medium-maturing variety Xiangyou 15 variety as control,the physiological and biochemical characteris-tics of three early-maturing rapeseed materials Za 1613,005,G7 were studied in the Yunyuan experimental base of Hunan Agricultural University from 2010 to 201 1.The main results were as follows:flower bud emergence,initial flowering,final flowering of early-maturing rapeseed materials were earlier than that of the control,and they have the characters of short seedling period,long stem elongation period and long mature period.With the advance of growth stage,the soluble protein content of f...