不同烤烟品种生化特征及与δ^(13)C的关系  

The Relationship between δ^(13) C Value and Biochemical Indicators in Different Tobacco Cultivars

作　　者：田先娇[1,2] 宋鹏飞 陈宗瑜[1] 谭淑文[1] 吴潇潇[1] 

机构地区：[1]云南农业大学农学与生物技术学院,昆明云南650201 [2]德宏师范高等专科学校生命科学系,德宏云南678400 [3]红塔集团技术中心,玉溪云南653100

出　　处：《核农学报》2014年第5期897-904,共8页Journal of Nuclear Agricultural Sciences

基　　金：国家烟草专卖局<清香型特色优质烟叶开发>(110201101003TS-03)

摘　　要：为研究不同烤烟品种的生理生态适应性及化学成分组成与δ13C的关系,在云南烤烟主产区玉溪市大营街自然环境下大田种植烤烟K326、红花大金元、云烟87和NC71,分析了不同烤烟品种δ13C值、丙二醛、光合色素、比叶重等生理指标和化学成分的差异。结果表明:(1)K326的比叶重、叶绿素a和叶绿素b含量最高,总糖、还原糖、氯含量、钾含量最接近适宜值范围,总氮含量、糖烟碱比均处于适值范围内。(2)4个烤烟品种烟叶的δ13C值范围为-26.27‰^-24.83‰,表现为:K326>NC71>红大>云烟87,说明可以用烟叶δ13C值作为评价烤烟生态适应性指标。经相关性分析,烤烟叶片的δ13C值仅与烟碱含量呈极显著正相关(r=0.99,p<0.01),与其它生化指标相关性不显著(p>0.05)。In order to understand the relationships between tobacco leaf δ^13Cvalues and biochemical indicators,tobacco cultivars K326,Hongda,Yunyan87 and NC71 planted in natural environment in Dayingjie of Yuxi city in 2011. We investigated the difference of δ^13Cvalues,MDA,photosynthetic pigment,LMA and content of chemical compositions among different flue-cured tobacco varieties. The relationships of δ^13Cvalues with physiological and chemical indicators were studied as well. The results showed that： K326 had the biggest LMA. The content of chlorophyll a and chlorophyll b was the maximum. The total sugar content,reducing sugar content,the chlorine content and the potassium content were good for tobacoo quality. Both total nitrogen content,and sugar / nicotine ratio were in appropriate value range.（ 2） The δ^13Cvalues among the 4 varietise were ranged from- 26. 27‰ to- 24. 83‰. The order as follows： K326 NC71 Hongda Yunyan87,Thus,δ^13Cvalues can be an indicator for ecological adaptation. According to the results of correlation analysis,the δ^13Cvalue was only highly significant positive correlated with nicotine（ r = 0. 99,p 0. 01）, and was not significant correlated with other physiological and chemical indicators（ p 0. 01）.

关 键 词：烤烟 品种 稳定碳同位素 生理生态特征 

分 类 号：S572[农业科学—烟草工业]