不同烤烟品种(系)苗期耐低氮胁迫差异研究  

Study on the Difference of Tolerance of Different Flue-cured Tobacco Varieties(lines)to Low Nitrogen Stress at Seedling Stage

作　　者：孙焕[1] 平文丽[1] 李雪君[1] 孙计平[1] SUN Huan;PING Wenli;LI Xuejun;SUN Jiping(Institute of Tobacco Research,He'nan Academy of Agricultural Sciences/Key Laboratory for Green Prevention and Control of Tobacco Diseases and Pests in Huanghuai Growing Area,State Tobacco Monopoly Administration,Xuchang He'nan 461000,China)

机构地区：[1]河南省农业科学院烟草研究所/黄淮烟区烟草病虫害绿色防控重点实验室,河南许昌461000

出　　处：《耕作与栽培》2024年第6期53-56,共4页Tillage and Cultivation

基　　金：河南省烟草公司科技项目(2023410000240020)。

摘　　要：为分析不同烤烟品种(系)的耐瘠薄特性,筛选适宜丘陵烟区生长的品种(系),本试验以豫烟7号、豫浓香201(Y2001)、Y074、7564、渠首1号等为试验材料,研究在低氮胁迫条件下各烤烟品系的叶片叶绿素值(SPAD值)、光合特性、根系形态及根系活力等生理指标的差异。结果表明,在0.5 mmol/L氮素供应的情况下,豫烟7号、Y074和7564能保持较好的叶片状态,胞间CO_(2)浓度、光合速率、蒸腾速率等受低氮胁迫影响较小,表明这3个品系受到低氮胁迫的影响较小,耐低氮能力更强。In order to analyze the barren resistance characteristics of different flue-cured tobacco varieties(systems)and screen the varieties(systems)suitable for growing in hilly tobacco area,Yuyan7,Yunongxiang201(Y2001),Y074,7564 and Qushou1 were used as experimental materials to study the effects of low nitrogen stress.The leaf chlorophyll value(SPAD),photosynthetic characteristics,root morphology and root activity were different among flue-cured tobacco strains.The results showed that Yuyan7,Y074 and 7564 strains could maintain a good leaf state with only 0.5 mmol/L nitrogen supply,and intercellular CO_(2)concentration,photosynthetic rate and transpiration rate were less affected by low nitrogen stress.

关 键 词：烤烟 低氮胁迫 苗期 光合作用 

分 类 号：S572[农业科学—烟草工业]