Study on the correlation of root activity and photosynthetic rate in the later growth duration of super-wheat
YE Bao-xing,MAO Da-chao,LIU Xue-chun( Shangdong Agricultural university ,Taian,271018)
This experiment was conducted with the super-wheats PH01-35,PH62008,988044 and Lumai14 in order to make a primary study on the variation of the root activity, POD activity and field photosynthetic rate after anthesis.The results showed as follows: after anthesis, there was an identical trend in the variation of root activity (TTC) among all the experiment materials, that was, the root activity was low during the anthesis, while increasing from anthesis to grain filling stage. However,during mature stage the root activity was in the relative decreasing trend, and the activities of root system and POD of super-wheat were heigher obviously than that of Lumai 14. When the root was in the course of senescence,there was slight difference between the variation of POD activity and that of the root activity ,which suggested that there might be some relationships between the activity of root and POD. And the photosynthetic rate of super wheat was heigher than the control.