The contents of chlorophyll a,chlorophyll b and chlorophyll(a+b) in leaves of C. cajan had a peak in August and then declined while for M.fortunei,besides a peak in August,there was another peak in October.

• 木豆的叶绿素a/b的季节变化呈递减趋势,相反,十大功劳呈上升趋势。