【摘要】 对从北美洲引进的7种滨藜3年生叶片的解剖结构观察、δ13C值测定及光合特征分析表明:7种滨藜均具有花环结构,其叶肉细胞呈栅栏状,与维管束鞘细胞相连;在干旱沙漠环境(甘肃民勤)和相对湿润条件下(河南原阳)生长,δ13C值均在-13‰～-16‰之间;植物生长季节,7种滨藜的光饱和点为1603～2185μmol.m-2s-1,表观量子效率0.0495～0.0718molCO2.mol-1photons。证明引进的7种滨藜均为C4植物,其光合作用途径没有随地理位置的变化而改变。更多还原

【Abstract】 Atriplex is a kind of typical plant species which grows in drought and semi-drought areas around the world.In order to provide a theoretical basis of reference for its photosynthetic characteristics,a series of leaf anatomical structure,stable carbon isotope ratio(13 C/12 C) and photosynthetic characteristics of seven 3-year-old Atriplex species introduced from North America were studied.The results showed that:All of the 7 Atriplex species have got Kranz anatomy and fences-like Mesophyll cell which contains bundle sheath cell inside;They can grow in both drought desert environment(Minqin in Gansu Province) and relatively humid condition(Yuanyang in Henan Province) with average δ 13 C value from-13‰ to-16‰;The light saturation points of the 7 species were from 1 603 to 2 185 μmol·m-2 s-1 and the apparent quantum yields were from 0.049 5 to 0.071 8 mol CO-2·mol-1 photons during the growing seasons.It was concluded that the 7 Atriplex plant species belonged to C-4 plant group and their photosynthetic pathway did not change with place changing during the growing period.更多还原