4个品种扶芳藤茎叶解剖结构及其与抗旱性的关系

The Study on Anatomical Structure and Drought-resistant of Stem and Leaves of Four Euonymus fortunei

采用石蜡切片法制片,观察了4个扶芳藤品种茎、叶横切面的解剖结构,发现不同扶芳藤品种茎、叶的解剖结构相似,但其结构参数差异较大。运用方差分析和多重比较对其结构参数进行了分析,得出宽瓣扶芳藤的茎表皮角质层厚度、叶片上表皮角质层厚度、叶片厚度及叶片栅栏组织厚度等4个抗旱指标均最大,与另外3种品种间差异显著;金边扶芳藤的上述4个指标最小与另外3个品种间差异也显著。同时得出扶芳藤茎和叶片的表皮细胞外壁的角质层厚度、叶片厚度及叶片栅栏组织细胞的排列方式等结构特征与其抗旱性相关。4个扶芳藤品种的抗旱顺序从强到弱依次为宽瓣扶芳藤﹥红脉扶芳藤﹥紫红扶芳藤﹥金边扶芳藤。

The stem and leaves anatomical structure of four Euonymus fortunei were observed by using wax-slides, we find that the cross section appears of stem and leaves of four Euonymus fortunei show similar structure, but dissimilar Parameters of tissue. We had an analysis by variance analysis and multiple comparison to their structure parameters, the result indicate that the drought resistance of E. fortunei ‘Kuanban＇ was the strongest stand for the four index of drought-resistant including thickness of stem cuticle,Thickness of the upper cuticle .of leaves, thickness of leaves and thickness of palisade tissue of leaves, and E. fortunei ‘Emerald＇n ‘Gold＇ was the weakest in these four index of drought resistance. At the same time ,we elicited that the cuticle thickness outside of the stems and leaves epidermis cell, thick- ness of leaves and the manner of palisade tissue cell arrangement have correlation with Euonymus fortunei drought-resistant. The drought-resistant ability of four Euonymus fortunei was as follows： E. fortunei ‘Kuanban＇ 〉 E. fortunei ‘Hongmai＇ 〉 E. fortunei‘Coloratus＇ 〉 E. fortunei ‘Emerald＇n‘Gold＇.