云烟85不同成熟度叶片组织结构的变化  

Change of Tissue Structure in Different Maturity of Yunyan 85

作　　者：张丽[1] 艾复清[1,2] 彭剑涛[3] 

机构地区：[1]贵州大学农学院,贵州贵阳550025 [2]贵州省烟草品质研究重点实验室,贵州贵阳550025 [3]贵州大学生命科学学院,贵州贵阳550025

出　　处：《贵州农业科学》2013年第5期44-47,共4页Guizhou Agricultural Sciences

基　　金：贵州省烟叶科学研究所项目"烟叶成熟过程主要生理生化与形态变化规律研究"

摘　　要：为弄清烤烟不同成熟度烟叶主要组织学指标的变化,采用石蜡切片制片、电动显微镜进行组织结构观察的方法,对云烟85下、中、上3个部位烟叶不同成熟度的组织结构变化进行研究。结果表明:随着成熟度的提高,下、中、上3个部位的烟叶身份逐渐变薄;叶片、上下表皮和栅栏组织的厚度呈逐渐降低的趋势,海绵组织厚度则呈逐渐升高的趋势;栅栏组织厚/海绵组织厚(组织比)和栅栏组织厚/叶厚呈逐渐下降的趋势,海绵组织厚/叶厚则呈逐渐上升的趋势。In order to study the tissue of different position leaves from lower, middle and upper stalk positions of flue-cured tobacco of Yunyan 85, paraffin sections and electric microscope were used to clarify the changes in the tobacco leaf histological index n different maturity,The results showed that the identity of tobacco gradually thinning, the thickness of leaf, the epicuticle thickness, the lower epidermis thickness, the thickness ratio of palisade to spongy tissue（S/P）, the thickness ratio of palisade to the thickness of leaf continuously reduced, the thickness of spongy tissues, the thickness ratio of spongy to the thickness of leaf increased gradually.

关 键 词：烤烟 成熟度 紧密度 疏松度 组织结构 

分 类 号：S572[农业科学—烟草工业]