Comparison of Photosynthetic and Physiological Characteristics of Satellite Chromosome Monosome,Trisome of Chinese Cabbage in Initial Flowering Stag

Based on the experiment of photosynthetic rate,diurnal photosynthetic variation,light response curve,chlorophyll content and Hill reaction activity of the satellite chromosome monosome(sat-monosome),diploid and trisome(sat-trisome) of Chinese cabbage, we researched the effect of additioning or dropping of satellite chromosome on the photosynthetic characteristics.The results showed that the additioning or dropping of sat-chromosome had a negative effect on the Pn,chla/b content and Hill reaction activity, but a positive effect on chlorophyll content.The curves of diurnal change of Pn of three lines were similar,all showed typical two peaks.The light compensation point and light saturation point of Monosome and Trisome were higher than Diploid.