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cÆVOdeQRfghbijXo · ì¯Ý¸ ;ç&+%&+±I;ç 556011 ,- õ:8¹ù,dS:%+9ÚÿkÄ,ÎÏ:¶SÝ。[ oÚ <¹ù/k:bXY»ºØ¼µ½%¾â¿¾âö:ؼµÞë。[ 4[<¹ù/k: Fv À/ÙÕ½%/Fm À/ù½%.ën qP % j5ÁÂÑ9n¬-ef,úIÄÅƽ%n qN Ç%5ÁÂÑ9ã¬- «/kÈg: : n qNn¬-ùÉ Fv/Fm¬-efqP eÊ«TspM43 ¢:  ö95-1 : Fv/Fms qP fI- 513 : qN ö¡TfºPË¿»%òjqN 4ÌÍI- 513 ÎÏ:ÈG±É qP n qNÐÑhÈg:êãÒÓ% º!BUÚ³ö%òj¨É:ÎÏ。[ 49qP n qN4ºÉGÔù:íÝÆ:ÙÕ:%+9./0 ùؼµ½%%Ö%òj !1234 S565.1  56789 A   5:;4 0517-6611 2019 24-0028-04 doi 10.3969/j.issn.0517-6611.2019.24.010      <=>?@ABC789OSID ): ChlorophyllFluorescenceResponseofSpringSoybeantoChillingStressatSeedlingStage TIANXin ZHONGCheng LIXingyuan CollegeofComprehensiveHealth KailiUniversity Kaili Guizhou556011 Abstract Objective Toexplorecorrelationamongthephotosyntheticparametersunderthechillingstress aswellasthecorrelationbe tweengermplasmandtemperature. Method Withseedlingsoffivespringsoybeanvarietiesasthetestvarieties wedetectedthechlorophyll contentsaftertemperaturestressbychlorophyllfluorescencemeter. Result Fv/Fmand qPoffivespringsoybeansallsignificantlyreduced. ComparedwiththeCKunderroomtemperature and qNenhancedsignificantly andasignificantincreaseinoriginalfluorescence and nonphotochemicalquenching qN Followingchillingstresscomparedtoroomtemperaturecontrols.Comparedtoothersoybeans the and qNincreasedthegreatestandtheyieldand Fv/FmdecreasedthegreatestinthetolerantcultivarGuliqing.Interestingly the qPdeclined but remainedatahighlevel. increasedtheleastincultivar#43 butitstillhadahighyield.The Fv/Fmratiowasthehighestincultivar95- buthadthelowest qP qNincreasedtheleastinchillingsensitivecultivarNannong513.Takentogether photooxidationqN maybea majorcauseofdamageinNannong513 resultinginitschillingsensitivity.Incontrast chillingtolerantcultivarGuliqingmaymaintainphoto synthesistomaintaingrowthandreducephotooxidationdamage asreflectedbyparameters qPand qN .Thus qPand qNmaybethemostre liableparameterstoevaluatechillingresistanceinsoybeans. Keywords Soybean Chillingstress Chlorophyllfluorescence Photoinhibition Photooxidation DEFG ×w5µ6uô×ùØÕÙ:gÚÿs .Äí/k:tD”( Ûw Ü2014 2151 )。 HIJK 1983 —), HÝIÞßþÌ DkVWLMNO 2019-06-17 %vî89pBK'(jbçîABKîQB b%vî)^3ÔÅjb )^jk%vKcÄÌÍX Y¨K>)%vKPxkQD 2-3 )^wxjk=^ SKËk @pKî~Eüj_"»h ;k>) CO Kïõ SýB7ù̬)^Kk"p j_=jÿ=V¤)^wxp>)t{ðKB7Ñ Õ3- =jÿJp>)R^5=ëÆ II 3Ô >) PSII t{ÅkËk7ü% j_+ , /B7>Ù§ Æ°±)^wx¬ =jÿKjkî¯FT^*KpBØI )^î+5FØÖbËátfK|[wxÆ{%j k¯b%vK3ëVPÛP°ÊÍï°¯b%v °Ë¬H$ÌPÏVBmjkÆÈB¬b%v ëQ)^R^_°±(¬b%vKR)^°± ABÄ4~!")Ñ%QÌÍËK)^wxêâf+ 5FØb%QÖbR)^K°±ÃSKDEb%v R)^Ë^î¼Íb%v?=ÐDK((çZ[ò2 ðÏb%vR)^Ë^î)ÐKpB;<R l5þjpò2°nBy~wxK=jÿ 10 Z[ þÙ+Ë· PS ¬ËKæ¬ÅkjMÞg*[~(#Øï©ßäÿ4Äÿ 11 Ç 12 K L 13 cjb¬)^k"Kõ[~êRl5þj°n %vK)^R^râfÃS4ª§~)^wx \ÿRl5þj°nb%v=Ù+y)^ëQ| ¼ÃÖb0ÍCPDm[ÜÃÐky4ÐD0= kQмÍDm*@¸1 E,Tmn 1.1 CDE, ¬ 41 "%vÐD)^|¼rE·Ê ë%EèPË°@Ò>K Äb%v14 ,-FH 513 )}BB '43 '95-1 -4FH 513 Ã)^ 3ÔÅ)}BîR)^ÅB '43 'k 95-1 ,4 4áÅëQ1.2 CDmn 1.2.1 Ì°~`X"5Ö£y®t9ÐBÎ ñ q =4∶2∶1 ByH\ÿþkÝ ÐHúáà H ,å =12h∶12h 25℃/18℃ý; 70% ), CO 398.65±20.47 μ mol/mol ÿ Li-6400 LI-COR USA° nE·), æ¬KZx300 μ mol/ ·), Ø 2d 3rÌ° 30d 1.2.2 )^U*2ÛP)3!R½hú¼½°@/Ì°Þõ=>¾~«KBy)^U*`ØÄëQ »V À-4À~)^0èí4y®)^U*5℃> ¬ý; 70% H ,å =12h∶12h ÝU* 4d ), CO ; Z[#\>?J.AnhuiAgric.Sci.2019 47 24 ): 28-31 38

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ChlorophyllFluorescenceResponseofSpringSoybeantoChillingStressatSeedlingStageTIANXin,ZHONGCheng,LIXingyuan (CollegeofComprehensiveHealth,KailiUniversity,Kaili,Guizhou556011)Abstract [Objective]Toexplorecorrelationamongthephotosyntheticparametersunderthechillingstress,aswellasthecorrelationbetweengermplasmandtemperature.[Method]Withseedlingsoffivespringsoybeanvarietiesasthetestvarieties,wedetectedthechlorophyllcontentsaftertemperaturestressbychlorophyllfluorescencemeter.[Result]Fv/FmandqPoffivespringsoybeansallsignificantlyreduced.ComparedwiththeCKunderroomtemperature,F0andqNenhancedsignificantly,andasignificantincreaseinoriginalfluorescence(Fo)andnonphotochemicalquenching(qN)Followingchillingstresscomparedtoroomtemperaturecontrols.Comparedtoothersoybeans,theFoandqNincreasedthegreatestandtheyieldandFv/FmdecreasedthegreatestinthetolerantcultivarGuliqing.Interestingly,theqPdeclined,butremainedatahighlevel.Foincreasedtheleastincultivar#43,butitstillhadahighyield.TheFv/Fmratiowasthehighestincultivar95-1,buthadthelowestqP.qNincreasedtheleastinchillingsensitivecultivarNannong513.Takentogether,photooxidation(qN)maybeamajorcauseofdamageinNannong513,resultinginitschillingsensitivity.Incontrast,chillingtolerantcultivarGuliqingmaymaintainphotosynthesistomaintaingrowthandreducephotooxidationdamage,asreflectedbyparametersqPandqN.Thus,qPandqNmaybethemostreliableparameterstoevaluatechillingresistanceinsoybeans.Keywords Soybean;Chillingstress;Chlorophyllfluorescence;Photoinhibition;Photooxidation

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