主成分分析鉴定烟草品种抗旱性的生理指标筛选  

The Physiological Indexes of Tobacco Drought Resistance Identification by Principal Components Analysis

作　　者：王仁刚 林世锋 张吉顺 杨志晓 李金玲[2,3] 

机构地区：[1]贵州省烟草科学研究院,贵州贵阳550081 [2]贵州大学,贵州贵阳550025 [3]贵州省药用植物繁育与种植重点(工程)实验室,贵州贵阳550025

出　　处：《湖南农业科学》2015年第11期7-9,12,共4页Hunan Agricultural Sciences

基　　金：中国烟草总公司科技重点项目(110201302004);中国烟草总公司贵州省公司科技专项(201101);中国烟草总公司贵州省公司地标项目(2013);贵州省作物学省级重点学科建设项目(黔学位合字ZDXK[2014]8号);贵州省药用植物繁育与种植人才基地项目(黔人领发[2013]15号)

摘　　要：以14个烟草品种为试验材料,采用大棚盆栽自然干旱的方式,在干旱的不同阶段(5、10、15 d)测定9个生理指标,通过主成分分析的方法研究了烟草抗旱鉴定敏感的生理指标,并进行了综合评价。结果表明:烟草干旱各阶段主成分分析提取主成分均4个,各干旱阶段生理指标主成分略有差异,综合分析得出,CAT、脯氨酸、可溶性蛋白、叶片水分、POD和可溶性糖6个生理指标与烟草的生理抗旱相关性最密切。14 tobacco varieties were taken as experimental materials. Tobacco plant was implemented to drought stress with controlled water supply by pot-culture method. The tobacco leaves were followed by measurement of nine physiological indexes during stress treatment （5, 10 and 15 d）. Then final comprehensive evaluation on sensitive physiological indexes of tobacco drought resistance identification was analyzed with principal components analysis method. The results showed that the four principal components were selected by principal components analysis to evaluate the sensitive physiological indexes of the various stages of drought stress. The principal components of physiological indexes at different stages in the drought were slightly different. The comprehensive analysis indicated that catalase activity, contents of proline, contents of soluble protein, leaf water content, peroxidase activity and soluble sugar content were the most closely connected with tobacco physiological drought resistance.

关 键 词：主成分分析 烟草 抗旱性 生理指标 

分 类 号：S572[农业科学—烟草工业]