%0 Journal Article
%T Relational analysis of leaf characteristics and photosynthetic capacities of plants<br>植物叶片特征与光合性能的关系
%A CHENG Jian-Feng
%A CHEN Gen-Yun
%A SHEN Yun-Gang
%A <br>程建峰
%A 陈根云
%A 沈允钢
%J 中国生态农业学报
%D 2012
%I 
%X Southeast-facing matured leaves of five plants Viburnum odoratissimum (VO), Ginkgo biloba (GB), Oxalis triangularis cv Purpurea (OTP), Ficus elastica cv. Decora Burgundyi (FEDB) and Morus alba (MA)] were used to determine the characteristics and photosynthetic capacities of plant leaves in sunny days. The Li-Cor 6400 Portable Photosynthesis Measuring System, Modulated Chlorophyll Fluorescence System (IMAGING-PAM M-Series), Dual-PAM-100 Measuring System and conventional methods were used to analyze the relationships among leaf characteristics and photosynthetic capacities. The results showed significant differences (P < 0.05 or P < 0.01) in leaf characteristics and photosynthetic capacities among different plants. Differences in specific leaf dry weight 35~215 g (DW)·m-2] among plants were higher than those in specific leaf fresh weight 0.28~1.04 kg (FW)·m-2]. Leaf chloroplast pigment contents chlorophyll a (Chla), chlorophyll b (Chlb), total chlorophyll (Chl) and carotenoid (Xc)] of MA and VO were the highest, followed by GB and FEDB and those of OTP were the lowest. While anthocyanin (Ant) content of OTP was maximum for 0.122 mg·g-1(FW) and 0.488 mg·g-1(DW), those of the others plants were low and similar. While OTP leaf Chla/Chlb (6.27), MA leaf Chl/Xc (9.97), MA leaf Chl/Ant (43.81) and VO leaf Xc/Ant (7.17) were the highest, OTP leaf Chl/Ant (0.49) and Xc/Ant (2.46) were the lowest. The orders of stomata conduction, transpiration rate, intercellular CO2 concentration and net photosynthetic rate (Pn) of the plants were MA > GB > OTP > VO > FEDB. MA and VO leaf practical quantum PSII Y(II)] was the highest and that of GB was low. Although MA, OTP and FEDB PSI were high, MA and FEDB PSI photo-protection was weak and that of OTP strong. Correlation analysis indicated that the effects of Ant and Xc on Pn were insignificant. Also stomata characteristics and chlorophyll content positively regulated P>/i>n. Y(II) mainly depended on chloroplast pigment content (especially Chla) and the relationship between Y(I) and Chl/Xc was positive. Leaf stomata opening and chlorophyll content negatively regulated PSII and PSI photo-protection. It, however, positively regulated PSII photo-damage. The effect of Xc was the exact reverse of that of Chl.
%K Plant leaf
%K Specific leaf weight
%K Chloroplast pigment
%K Anthocyanin
%K Photosynthetic apparatus
%K Photosynthetic capacity<br>植物叶片
%K 比叶重
%K 叶绿体色素
%K 花青素
%K 光合机构
%K 光合能力
%U http://www.alljournals.cn/get_abstract_url.aspx?pcid=03F54A49DE00578AA0E5DDF5BC021AA7&cid=1A8B5357F0EF07B8&jid=AB3ABF502E2E1FF39F0E3B80164C9031&aid=3106EA3719288EC19551A179C335F830&yid=99E9153A83D4CB11&vid=A04140E723CB732E&iid=E158A972A605785F&sid=4D4C81DBA842B7BD&eid=8143FF92EEF26F96&journal_id=1671-3990&journal_name=中国生态农业学报&referenced_num=0&reference_num=0