中国烟草科学Issue(4)：58-63,6.DOI:10.13496/j.issn.1007-5119.2014.04.011
光照强度对白肋烟光合特性及中性致香成分的影响
Effectsof Light Intensityon Photosynthetic Characteristicsand Neutral Aroma Constituentsof Burley Tobacco
摘要
Abstract
Toidentify theeffects of light intensity on photosynthesis of burley tobacco leavesduring field stages, andexplore the distribution differencesofmain neutral aroma constituentsincuredburley tobacco leaves of differentlight intensities treatment, artificial shadeexperiment with 3light transmittance level (100%, 80%, 60%) from rosette stage to maturation stagewas carried out by usingEyan 6 as testmaterial.The results indicated that leaf source capacity per unit area of 80% transmittance level was higher than the other two levels. In the early stage of the shade, light intensitywasthe majorcontrolling factor, net photosynthetic rate under shading treatment were lower than that under full sunlight(100%>80%>60%);In the later period, environment temperature under shading treatmentwas lower, air humidity and CO2concentration was relatively high in the air, and stomatal conductance and transpiration rate increased, and net photosynthetic rate was higher than CK(100% transmittance level),but the intercellular CO2 concentrationdecreased.Tobaccoleaveshada strong adaptability to light, and long-term shade couldstimulate its absorption and conversion efficiency of weak light. Neutral aroma constituents, sense quality, activities of peroxidase and superoxide dismutase were better thanthose of100% full natural light as a whole. But 100% natural light intensity was more advantageous to the increasing of content of soluble sugar, and absorption of water-soluble chloride and potassium in burley tobacco leaves. Through comprehensive analysis, tobacco leaves in 80% transmittance level havebetter quality and meet the formula requirements of the industrial enterprises.关键词
白肋烟/光照强度/光合特性/叶源量/中性致香成分/酶活性Key words
burley tobacco/light intensity/photosynthetic characteristics/leaf source capacity/neutral aroma constituent/enzyme activity分类
农业科技引用本文复制引用
倪国仕,左梅,王瑞,吴文昊,向必坤,许自成..光照强度对白肋烟光合特性及中性致香成分的影响[J].中国烟草科学,2014,(4):58-63,6.基金项目
国家烟草专卖局面上项目“恩施烟区白肋烟品质差异的生态机理及调控技术研究” （）
