The Photosynthetic Physiological Characteristics of Ligustrum lucidum in Different Clones
An experiment was conducted to study the diurnal variations of photosynthetic parameters of Ligustrum lucidurn in different clones using portable photosynthesis system CIRAS--2 under natural condition. The results showed that the diur- nal variations of net photosynthetic rates (Pn) of Ligustrum lucidum in different clones showed double--peak trends. The mid- day depression of C5 and C9 occurred in 11:00 ,CK occurred in 13:00 ,it was a little later. The chlorophyll fluorescence param- eters of Ligustrum lucidum in different clones were studied with a pulse modulated chlorophyll fluorometer (FMS--2). The results showed that diurnal variations of maximal photochemical efficiency of PS Ⅱ (Fv/Fm) of Ligustrurn lucidum in different clones showing V--shaped, first decreased then increased. The chlorophyll meter (SPAD--502) was used to determination of value of SPAD, the result was CK〈C5〈C9, it showed that CK was the lowest,C5 took the second place, and C9 was the highest in chlorophyll relative content.
NETL
NSTL
万方数据
维普
