烤烟成熟时栅栏组织与海绵组织厚度比值的变化

在田间条件下,对烤烟下、中、上3个部位的叶片在成熟过程中栅栏组织厚度、海绵组织厚度、栅栏与海绵组织厚度比值等3个叶片组织结构特性的变化进行了分析.结果表明,随着烟叶部位的上升,叶片栅栏组织厚度、海棉组织厚度、栅栏与海绵组织厚度比值均表现为随之降低的变化规律;随着烟株移栽后天数的增加,各部位烟叶栅栏与海绵组织厚度比值的变化无明显规律性.3个烟叶部位之间叶片栅栏组织厚度的差异极显著,海绵组织厚度、栅栏与海绵组织厚度比值的差异显著;烟株移栽后天数与栅栏组织厚度之间呈极显著正相关,与海绵组织厚度之间呈显著正相关;烟叶栅栏与海绵组织厚度比值和栅栏组织厚度之间呈显著正相关;海绵组织厚度与栅栏组织厚度之间呈极显著正相关.

The Change of Thickness Rate of Palisade and Sponge Tissue in Flue-cured Tobacco Green Leaves during Mature Period

The changes of palisade tissue thickness,sponge tissue thickness,and thickness rate of palisade and sponge tissue in flue-cured tobacco green leaves during mature period were studied.The results indicated that palisade tissue thickness,sponge tissue thickness,thickness rate of palisade and sponge tissue was decreased with the increasing leaf positions.With the increasing days after transplanting,there was not distinct change regularity about thickness rate of palisade and sponge tissue.The difference of palisade tissue thickness was extremely significant,the difference of sponge tissue thickness and thickness rate of palisade and sponge tissue was significant in different leaf positions.The days after transplanting were extremely significant positive correlation with palisade tissue thickness.The extremely significant positive correlations were observed between palisade and sponge tissue thickness,and the significant positive correlations were observed between palisade tissue thickness and thickness rate of palisade and sponge tissue.