5个品系橡胶树叶片解剖结构及其抗旱性分析

利用石蜡切片技术,用光学显微镜观测了5个品系橡胶树叶片的栅栏组织厚度、叶片厚度、主叶脉厚度等叶片解剖结构,并运用多重比较和隶属函数,综合分析其抗旱性。结果表明:5个品系橡胶树叶片角质层厚度、栅栏组织厚度、叶片厚度、主叶脉厚度等均有显著差异;根据隶属函数综合评价,5个品系橡胶树的抗旱性强弱依次为:保亭933热垦525RRIM513海垦1热研106。

Leaf Anatomical Structure and Drought Resistance Analysis of 5 Rubber Clones (Hevea brasiliensis)

In order to explore the relationship between leaf structure and drought resistance of rubber trees,leaves rubber trees collected from 5 rubber clones (Hevea brasiliensis) were treated by using paraffin section technique to observe their anatomical structures such as palisade tissue thickness,leaf thickness,main vein thickness,etc.under optical microscope.The data were subjected to multiple comparison and subordinate function analysis to analyze the drought tolerance of the leaves of the 5 rubber clones.The results showed that there were significant difference among the 5 rubber clones in leaf cuticle thickness,palisade tissue thickness,thickness and main vein thickness.Multiple comparison and subordinate function analysis showed the drought resistance of these 5 clones was in the order of Baoting 933 ＞ Reken 525 ＞ RRIM 513 ＞ Haiken 1 ＞ Reyan 106.