不同世代烤烟群体化学成分和多酚物质的变异分析

Analysis of Variation of the Chemical Components and Polyphenols in Different Generation Flue-cured Tobacco Population

[目的]为高香气烤烟育种提供理论依据。[方法]对不同世代群体化学成分和多酚物质的变异及相关性进行分析。[结果]经过第1轮轮回选择的群体(C1群体)糖类化合物(还原糖、总糖和淀粉)和钾含量显著低于原始群体,含氮类化合物(总植物碱、总氮和蛋白质)、氯、挥发酸、挥发碱和石油醚提取物含量均显著高于原始群体。多酚总量在不同群体间表现为基础群体(C0群体)>原始群体>C1群体,且C0与C1群体间差异显著。相关分析结果表明,多酚总量与含氮类化合物、挥发酸、挥发碱及石油醚提取物含量总体上呈负相关,与钾含量呈正相关,与糖类化合物及氯含量的相关性在不同世代间不同。[结论]轮回选择加强了烤烟多酚物质和主要化学成分间的相关性。

[Objective] The aim was to provide theoretical basis for high aroma breeding.[Method] Variation and relationship between the chemical components and polyphenols of different generation flue-cured tobacco population in the breeding process of recurrent selection were analyzed.[Result] The content of carbohydrates（reducing sugar,total sugar and starch） and potassium in the C1 population were significantly lower than those in the original parental population,and the content of the nitrogenous compounds（nicotine,total-nitrogen and protein）,chlorine,volatile acid,volatile alkali and petroleum ether extracts were significantly higher than those in the original parental population.The gross of polyphenols in different population showed：C0 population original population C1population,and the difference between C0 and C1 population was significant.The correlation analysis indicated that the gross of polyphenols had negative correlation with the content of the nitrogenous compounds,volatile acid,volatile alkali,petroleum ether extracts,and positive correlation with the content of potassium,and different correlation with the content of carbohydrates and chlorine in different generations.[Conclusion] The correlation between polyphenols and main chemical components was strengthened by recurrent selection..