干旱胁迫下保水剂对雪茄烟叶碳氮代谢和中性香气物质含量的影响  

Effects of water retaining agent on carbon-nitrogen metabolism and neutral aroma substances content in cigar tobacco leaves under drought stress

作　　者：李欣燕 王方玲 张明月 邵志晖 王俊 阳苇丽[4] 赵铭钦[1] LI Xinyan;WANG Fangling;ZHANG Mingyue;SHAO Zhihui;WANG Jun;YANG Weili;ZHAO Mingqin(College of Tobacco Science,Henan Agricultural University,Zhengzhou 450002,China;Zhushan Tobacco Branch of Shiyan City Tobacco Company of Hubei Province,Zhushan 442200,Hubei,China;Deyang City Company of Sichuan Province Tobacco Company,Deyang 618400,Sichuan,China;Dazhou City Company of Sichuan Province Tobacco Company,Dazhou 635000,Sichuan,China)

机构地区：[1]河南农业大学烟草学院,河南郑州450002 [2]湖北省十堰市烟草公司竹山烟叶分公司,湖北竹山442200 [3]四川省烟草公司德阳市公司,四川德阳618400 [4]四川省烟草公司达州市公司,四川达州635000

出　　处：《浙江农业学报》2022年第12期2610-2621,共12页Acta Agriculturae Zhejiangensis

基　　金：中国烟草总公司四川省公司重大科技攻关项目(scyc201913)。

摘　　要：为研究干旱胁迫下保水剂种类和用量对雪茄烟叶碳氮代谢和香气质量的影响,以德雪3号为试材,采用盆栽试验研究不同保水剂种类(SAP保水剂、沃特保水剂和自制保水剂TS-PAA)与用量(2、4、6 g·株^(-1))下的雪茄烟叶碳氮代谢和中性致香成分含量变化。结果表明:1)使用保水剂可有效提高雪茄烟生长发育前期(45 d以前)氮代谢强度,加速氮素营养向烟碱的转化与积累,削弱后期(60 d以后)氮代谢强度,使烟碱的积累程度明显减弱,75 d时各处理的烟碱含量较对照均有大幅度下降,以TS-PAA 2 g·株^(-1)处理降幅最大,为32.26%。2)使用保水剂能加速中后期(45 d以后)碳代谢进程,促进雪茄烟叶中淀粉、总糖、还原糖含量增加,其中以TS-PAA 4 g·株^(-1)处理增幅最高,较CK增幅分别为327.28%、80.51%、79.54%,糖碱比增幅161.90%,两糖比(还原糖/总糖)均维持在0.9左右。3)使用保水剂还能显著延迟叶片衰老,提升烟株的抗旱能力,促进雪茄烟叶中性致香成分积累。4)在干旱协迫条件下,保水剂的使用有利于促进雪茄烟叶生长发育过程中碳氮代谢的合理转化与动态平衡,提升烟叶品质。不同处理比较,TS-PAA、沃特保水剂处理以4 g·株^(-1),SAP保水剂处理以6 g·株^(-1)用量时作用效果最佳。In order to study the effects of types and dosage of water retaining agents on the carbon and nitrogen metabolism and aroma quality of cigar tobacco leaves under drought stress,Dexue 3 was used as the test material to study the changes of carbon and nitrogen metabolism and neutral aroma components content in cigar tobacco leaves under the effects of types and dosage of water retaining agents(SAP water retaining agent,Wote water retaining agent and self-made water retaining agent)and dosage(2,4,6 g per plant).The results showed that:1)The use of water retaining agent could effectively improve the nitrogen metabolism intensity in the early stage(before 45 days)of cigar tobacco growth and development,accelerate the transformation and accumulation of nitrogen nutrition to nicotine,weaken the nitrogen metabolism intensity in the late stage(after 60 days),and significantly weaken the nicotine accumulation.At 75 days,the nicotine content of each treatment was significantly reduced compared with the control,and the TS-PAA 2 g per plant treatment had the largest reduction,with a decrease of 32.26%.2)The use of water retaining agent could accelerate the level of carbon metabolism in the middle and late stages(after 45 days),and promote the increase of starch,total sugar and reducing sugar content in cigar tobacco leaves.Among them,TS-PAA 4 g per plant treatment had the highest increase,increasing 327.28%,80.51%and 79.54%,respectively compared with the control.The sugar base ratio increased by 161.90%,and the two sugar ratios(reducing sugar/total sugar)were maintained at about 0.9.3)The use of water retaining agent could also significantly delay leaf senescence,improve the drought resistance of tobacco plants,and promote the accumulation of neutral aroma components in cigar tobacco leaves.4)Under drought stress,the use of water retaining agent was conducive to promoting the reasonable transformation and dynamic balance of carbon and nitrogen metabolism during the growth and development of cigar tobacco leaves,and improving

关 键 词：干旱胁迫 保水剂 雪茄烟叶 碳氮代谢 香气物质 

分 类 号：S572[农业科学—烟草工业]