烟草科技2019，Vol.52Issue(7)：35-41,7.
烘烤过程中烟叶主脉腐烂及霉变症状分析
Midrib mildew and rot symptoms of tobacco leaves during flue-curing
摘要
Abstract
In order to study the microstructure variation and main element contents in midribs of moldy and rotten tobacco leaves, the middle leaves of cv. Yunyan 85 were taken as the experimental material, scanning electron microscopy was used to observe the midribs of fresh leaves and leaves mildewed and rotted during flue-curing. Energy dispersive spectrometer was used to detect the contents of Na, O, C, Ca and P in midribs and crystals of tobacco leaves. The results showed that tobacco leaves rotted earlier and spread faster than leaves mildewed. The rot and mildew of tobacco leaf appeared in its midrib first, and then extended to both sides of the midrib. When tobacco leaves rotted, their midribs produced calcium oxalate crystal sands which contained a large amount of Ca (30.34% ) to accelerate the mildew of tobacco leaves and some P (24.92% ) to regulate crystal morphology. Cell bottom wall, cell sidewall and calcium oxalate crystal sands contained Na, O and Ca, cell bottom wall and cell sidewall contained C, and cell sidewall and calcium oxalate crystal sands contained P. The contents of Ca and P in calcium oxalate crystal sands were the highest. The mildew and rot of tobacco leaves mainly occurred on the midrib of leaf base. Rotten tobacco leaves produced calcium oxalate crystal sands, which accelerated the mildew of tobacco leaves.关键词
烟叶/烘烤/主脉/腐烂/霉变/扫描电镜/微观结构Key words
Tobacco leaf/Flue-curing/Midrib/Rot/Mildew/Scanning electron microscope/Microstructure分类
农业科技引用本文复制引用
高娅北,娄晓平,陈二龙,张保全,张仲文,史久长,陈小翔,宋朝鹏..烘烤过程中烟叶主脉腐烂及霉变症状分析[J].烟草科技,2019,52(7):35-41,7.基金项目
河南省高等学校青年骨干教师资助项目"特殊气候下烤烟烘烤应变技术研究"(2015GGJS-079) （2015GGJS-079）
中国烟草总公司云南省公司资助项目"防治烘烤过程中烟叶腐烂霉变技术研究推广"(2016YN10). （2016YN10）
