Abstract:

In order to investigate the changing rules of chlorophyll content in the leaves of ‘Jinguang’ plum, the chlorophyll contents in different stage and different shoots were determined by using direct extraction. The results showed that the chlorophyll a+b contents in different stage had a tendency of high low fluctuation, and the peak appeared in middle of May, middle of July and the first ten days of September respectively. The chlorophyll a+b contents in the leaves on the spurs bearing fruit and the spurs without bearing fruit had three peak values and two valley values, but the chlorophyll a+b contents in the leaves on the vegetative shoots only had two peak values. The trend of the chlorophyll a/b values in the leaves on different stage and different shoots was V-shape, and the valley value appeared in middle of July. So reference basis for determination the suitable irrigation periods and fertilizing season in production was offered.