不同品种烤烟叶表皮的微形态特征分析

Micro- morphological Characteristics of Leaf Epidermis of Different Flue- cured Tobacco Cultivars

为有效利用烤烟品种资源,对16个不同烤烟品种成熟期中部叶表皮微形态特征进行了比较。结果显示:16个烤烟品种上下表皮细胞形状均为不规则形,上表皮细胞的垂周壁以波状为主,只在云烟97、NE297、云烟100品种中看到垂周壁呈浅波状的表皮细胞。下表皮细胞的垂周壁均呈深波状。上表皮气孔器类型为无规则型和不等细胞型,下表皮气孔器类型则以无规则型为主。统计分析表明,不同品种间的烟叶上、下表皮气孔密度、气孔指数等指标均呈现出显著差异。

For effectively using the resource of flue-cured tobacco cultivars, the micro-morphological characteristics of leaf epidermis of cutters of 16 flue-cured tobacco cultivars were compared at mature stage. The results showed that the cells in upper and under epidermis of the 16 tobacco cultivars were all irregular in shape, the patterns of anticlinal wall of upper epidermis cell were mainly sinuate, while sinuolate epidermis cells were only observed in cultivars of Yunyan 97, NE297 and Yunyan 100. The patterns of anticlinal wall of under epidermis cell were sinuate. The stomatal apparatuses on upper epidermis were of anomocytic and anisocytic cell types, and those of under epidermis were mostly of anomocytic types. Statistical analysis showed that the stomatal density and stomatal index on upper and under epidermis were significantly different between cultivars.