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1、第6卷第4期生命科学研究Vol.6No.42002年12月LifeScienceResearchDec.2002X高温对烟叶品质的影响11,2黄国文,陈良碧(1.吉首大学资源和环境科学学院,中国湖南吉首416000;2.湖南师范大学生命科学学院,中国湖南长沙410081)摘要:研究了下列条件下烟叶的成熟和品质的变化.在烟草移栽后第90d进行7d人工高温处理(白天温度4为35℃,晚上温度为29℃,光照强度为3×10lx,相对湿度为75%),同期对照的自然条件是3d阴天,日均温5为19.7～23.9℃;4d晴
2、天,日均温为25.9～30.8℃,日最强光照强度均在1×101x以上.结果表明,人工高温处理后,烟叶叶色比对照更绿,成熟期推迟5～7d,没有出现整株烟叶快速变黄的“高温逼熟”现象.对烟叶的细胞结构和化学成分分析,也没有出现“高温逼熟”引起品质变差的变化.因此认为湘南烟区“高温逼熟”导致烟叶品质下降的原因除高温以外,还与强光辐射“、火南风”等因素所造成的危害有关.关键词:烟草;高温;逼熟;品质中图分类号:TS41文献标识码:A文章编号:100727847(2002)0420362205Influenceof
3、HighTemperatureontheQualityofTobaccoLeavesl1,2HUANGGuo2wen,CHENLiang2bi(1.CollegeofResourcesandEnvironmentalSciencesJishouUniversity,Jishou416000,Hunan,China;2.CollegeofLifeSciences,HunanNormalUniversity,Changsha410081,Hunan,China)Abstract:Thechangesofmat
4、urityandqualityintobaccoleaveswerestudiedunderthefollowingconditions.Artifi2ciallyhightemperatureconditions(35℃inthedaytimeand29℃atnight,lightintensityof30thousandlx,relativehumidityof75%)andcontinuous7daysbegunattheninetiethdayaftertransplantingstage,and
5、duringtreatmentthenaturalconditionsofthecontrolwerethattherewere3cloudydayswithdaymeantemperatureofl9.7～23.9℃,and4sunnydayswithdaymeantemperatureof25.9～30.8℃anddaylightintensityofmorethan100thousandlx.Theresultsshowedthatthecolouroftreatedtobaccoleaveswas
6、notonlygreener,butalsotheirmaturetimedelayed5～7days,andthattheirleavesdidn’texperiencehigh2temperature2forced2ripening(HTFR)whichmadeleavesaccelerateyellowingunderhightemperature.Inaddition,theircellstructureandchemicalingredientsofleavesdidn’tbecomeworse
7、,whichresultedfromHTRF.Asaresult,inadditiontothedangerofhightemperature,thereasonsforthedecreasedqualityoftobaccoleavesunderHTFRinXiangnanwereconnectedwiththedangersofintensiveilluminationradiationandhotsouthwindandsoon.Keywords:tobacco;hightemperature;fo
8、rcedripening;quality(LifeScienceResearch,2002,6(4):362～366)X收稿日期:2002206203;修回日期:2002210220基金项目:湖南省科委重点课题(125980216);湖南省烟草专卖局重大攻关项目(24980409)作者简介:黄国文(19562),男,湖南郴州人,硕士,吉首大学讲师,主要从事烟草栽培生理生态研究.第4期黄国文等:高温对烟叶品质的影响363温度对烤
