摘要
细叶车前属于簇生叶序，中央的上位叶发育较晚，其栅栏组织分布在叶片的背、腹两边，不发达的海绵组织位子栅栏组织之间，上、下表皮均密被单列细胞的长柔毛，属于典型的等面叶；而位于簇生叶序周围的下位叶发育较早，栅栏组织细胞只分布在叶片的腹面，海绵组织细胞则分布在叶的背面，但是，在同一植株上着生的有些下位对，其叶的背面并不发育成海绵组织，而是发育为大型的薄壁细胞。研究结果表明，在同一植株上具有不同结构的叶片，更有利于植物在不同的发育时期适应变化着的严酷环境而正常生长。
The epigynous leaves of plantago lessingiiFisch et wey are developed later,which located in the center of the fascicled phylletaxy The pelisade tissue distribute in both back and abdonen of leaf,the spongy tissue that istnot very developed locate in the miidle of thg palisade tissues there are many hairs cevered in upper and nuder epidermises The epigynous leaves are typical isobilateral leaves Hypogyonus leaves are development earlier which are around the faspicled leaves the palisade tissue only distribute in ohe side of abdomen and the spongy tissue distibute in the back of the leaves, some hypegyneus leaves don' t develop the spongy tissue in the back,but many big parechyma cells developed.The results show that a pland has leaves which have different structures are good fer the lpant normal growing when they at the different growing sfage in order to adapt the harsh evironment which is changeful.
出处
《宁夏农学院学报》
1994年第4期38-41,共4页
Journal of Ningxia Agricultural College
关键词
叶
解剖结构
生态环境
细叶车前
leaf anatomical structure ecological environment
