不同烤烟品种中部叶的显微结构分析  

Microstructure Differentiation of Middle Leaves Among Flue-cured Tobacco Cultivars

作　　者：黄勇[1] 何小力[2] 张伟[1] 周冀衡[1] 

机构地区：[1]湖南农业大学生物科学技术学院,长沙市芙蓉区农大路1号410128 [2]湖南农业大学实验中心,长沙市芙蓉区农大路1号410128

出　　处：《烟草科技》2012年第6期76-79,共4页Tobacco Science & Technology

基　　金：湖南农业大学稳定人才基金资助项目"UV-B对植物生长发育和次生代谢的影响及在农业生产应用"(09WD25)

摘　　要：为揭示烟叶叶片结构的品种间差异,在相同栽培条件下,选择烤烟主栽品种K326、红花大金元(HD)、云烟87(Y87)、云烟85(Y85)、G80、中烟14(Z14),以及地方品种湘烟1号(X1)等具有一定代表性的中部适熟烟叶,采用石蜡切片等技术详细分析了烟叶叶片的显微结构。结果发现,叶片厚度以Y85和X1最厚,HD,Y87,Z14最薄,Z14栅栏/海绵组织最大、间隙度较大,但差别不明显,品种间的气孔形态指标差异较大,可以部分反映出品种的环境适应性,K326叶片结构与气孔形态各项指标处于适中状态。不同品种的基因差异以及生态适应性是造成叶片结构差异的主要因素。For investigating the differences in leaf microstructure among flue-cured tobacco cultivars, the microstructures of mature middle leaves of cv. K326, Honghuadajinyuan （HD）, Yunyan87 （Y87） , Yunyan85 （Y85）, G80, Zhongyanl4 （Z14） and Xiangyanl （X1） cultured under the same conditions were analyzed in detail. The results showed that the leaves of Y85 and X1 were the thickest, and those of HD, Y87, Z14 were the thinnest. Z14 had the largest ratio of palisade to spongy tissue and larger clearance, however the differences among the cultivars were not obvious. While the morphology of stoma differed significantly among cultivars, K326 were moderate both in leaf structure and stoma morphology. It was speculated that the gene type and ecological adaptation were the main factors causing the differences of leaf structure among cultivars.

关 键 词：烤烟品种 显微结构 中部叶 气孔 

分 类 号：S572.01[农业科学—烟草工业]