不同光照条件对大花萱草叶片解剖结构的影响

The Influences on Leaf Aanatomy of Hemerocallis Under Different Light Conditions

对黄色、金黄色和红色3个品系大花萱草进行不同的光照处理,对其叶片解剖结构进行分析研究。结果表明:不同光强对3种大花萱草叶片上、下表皮的厚度影响均不显著,叶片上、下表皮的细胞大小及叶主脉导管直径在不同处理下不存在显著差异;气孔密度的排序为T1>T2>T3,净光合速率可能与气孔密度呈正相关,气孔指数随光强的减弱而降低。大花萱草叶片解剖结构受不同光照条件的影响较小。

The leaf anatomical structure of three Hemerocallis strains（Yellow,Golden yellow,Red） under different light conditions were analysied.The results showed that there were not significant differences in the thickness of up and lower epidermises under different light intensities,there were not significant differences in the leaves on the lower epidermis cell size and leaf main vein vessel diameter under different light treatments;The order of the stomatal density was T1T2T3,the photosynthetic rate may be positively related to stomatal density,the stomatal index reduced with the reducing of light intensity.The leaf anatomy structure of Hemerocallis were less affected by different light conditions.