SPAD值与鲜烟叶成熟度及烤后烟叶质量的关系
The Relationship of SPAD Value, Maturity of Fresh Tobacco Leaves and Quality of Flue-cured Tobacco Leaves
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摘要: 为探索快速、无损判断鲜烟叶成熟度的量化指标,以秦烟96为试验材料,应用叶绿素测定仪测定了各部位不同成熟度鲜烟叶SPAD值,并对相应烤后烟叶的经济性状、外观质量、化学成分、感官评吸质量进行了评价测定。结果表明,SPAD值能够较灵敏地区分烟叶黄绿面积10%~20%的差异,且与烟叶成熟度呈显著负相关关系,可较好地表示烟叶成熟度。综合烤后烟叶各项质量评价指标,下、中、上3个部位烟叶适宜成熟度对应的鲜烟叶SPAD值分别为8.6~11.4、17.9~18.6和13.2~20.3,SPAD值可作为成熟度的快速判定量化指标,用于指导烟叶适熟采收。Abstract: The experiments were conducted to develop a fast, non-destructive method to judge the maturity of fresh tobacco leaves using a chlorophyll meter. The tobacco cultivar Qinyan 96 was used in this experiment. The SPAD values of fresh tobacco leaves with different maturity and the economic characters, appearance quality, chemical composition and sensory evaluation of flue-cured tobacco leaves were evaluated and compared to study the relationship of SPAD values and the quality of flue-cured tobacco leaves. The results showed that, SPAD values could effectively distinguish the difference between yellow green area of 10%-20% of fresh tobacco leaves, and was negatively correlated with tobacco maturity. Corresponding to the most appropriate maturity of flue-cured tobacco leaves of three parts from bottom to top, the SPAD values were 8.6-11.4, 17.9-18.6 and 13.2-20.3 respectively. The results provide a method for rapid and nondestructive judgment of picking maturity of tobacco leaves.
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