不同cd积累基因型烟草根系分泌低分子量有机酸的差异

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1、࿵Ҥ॓࠯/TobaccoScience&Technology࿵Ҥ୪࿐/TobaccoAgronomy2014୍4௹čሹ321௹Ď҂๝Cdࠒ৆ࠎၹ྘࿵Ҥ۴༢ٳ૟ٳሰਈႵࠏූҵၳ12*111അ߰໓đӧࡾ޿đᅦဇਪđպ޿ᶈđᅦབ1.ᇏݓ࿵Ҥሹ܄ඳᆢᇜ࿵Ҥ࿹࣮ჽđᆢᇜۚྍ࠯ඌӁြष౵ڀဗࢧ24500012.ᇏݓ࿵ွ܄ඳđК࿆ࣘ໳౵ܼν૊ຓնࢧ9100055ᅋေğҐႨ๲ಛனᄗބඣ஡൫ဒđၛ҂๝Cdࠒ৆ଆൔਆᇕࠎၹ྘࿵Ҥŀ௴๙࿵Ҥ௖ᇕK326ބߛ޽࿵ҤčN.rusticaĎłູ൫ҋđ࿹࣮ਔ҂๝᫻୩ԩ৘༯࿵Ҥ۴༢ٳ૟ٳሰਈႵࠏූሹਈࠣ۲ቆٳݣਈҵၳbࢲݔіૼğæ๲ಛனᄗ൫ဒᇏđ1mg/

2、kg᫻ԩ৘ॖ՜ࣉ࿵૬ളӉđ10mg/kg᫻ԩ৘࿸ᇗၝᇅ࿵૬ളӉbაK326ཌྷбđN.rusticaऎႵ۷఼ର᫻ྟbç๲ಛனᄗބඣ஡൫ဒᇏđ୩᫻ԩ৘ॖ՜ࣉٳሰਈႵࠏූٳූࠏႵਈሰٳrustica.bN૟ٳఃᇅၝᄵ୩ۚđ૟ٳ૟ሹਈնႿK326b᫻ԩ৘༯đߛ޽࿵Ҥٳ؟ࢠ૟ٳሰਈႵࠏූॖି൞ఃର᫻ᇶေള৘ࠏᇅᆭ၂bè๲ಛனᄗބඣ஡൫ဒᇏđN.rustica۴༢ٳ૟ҤූaࣵെූaࡊූބೄූݣਈनۚႿK326đ֌ᆃ4ᇕႵࠏූᅝႵࠏූሹਈб২ਆ࿵Ҥࠎၹ྘ࡗҵၳन҂ཁᇷbਆࠎၹ྘࿵Ҥର᫻ྟҵၳॖିაᆃ4ᇕٳሰਈႵࠏූٳ૟ਈႵܱđطა۲ႵࠏූቆӮб২໭ܱbܱ࡯Սğ᫻Ġ௴๙࿵ҤĠߛ޽࿵ҤĠٳ

3、ሰਈႵࠏූᇏ๭щᅣ໓Ağ઒്ѓང໓01.572Sğোٳğ1002-0861č2014Ď04-0088-05DifferenceofLowMolecularWeightOrganicAcidsExudedbyRootSystemofTwoTobaccoGenotypesofDifferentCdAccumulatingPattern12*111SHANGHuiwen,CHENJianghua,ZHANGYanling,DAIHuaxin,andZHANGShixiang1.ZhengzhouTobaccoResearchInstituteofCNTC,Zhengzhou45

4、0001,China2.ChinaNationalLeafTobaccoCorporation,Beijing100055,ChinaAbstract:SoilpotandwatercultureexperimentsoftwotobaccogenotypesofdifferentCdaccumulatingpatter,N.tabacum(K326)andN.rustica,werecarriedouttostudytheirdifferenceintotalandindividualcontentsoflowmolecularweightorganicacids(LM

5、WOA)intheexudatesofrootsystem.Theresultsshowedthat:1)Insoilpotexperiment,tobaccoseedlinggrowthwaspromotedbyCdtreatmentattherateof1mg/kg,whileitwasseriouslyinhibitedatCdrateof10mg/kg.N.rusticawasmoretoleranttoCdthanwasK326.2)Insoilpotandwatercultureexperiments,LMWOAssecretionwaspromotedatl

6、owCdlevel,itwasinhibitedathighCdlevel.TotalamountofLMWOAsexudatesbyN.rusticawashigherthanthatbyK326,whichindicatedthathigherLMWOAsexudationmightbeoneofthemajorfactorsleadingtohighertoleranceofN.rusticatoCd.3)Thecontentsofoxalicacid,tartaricacid,methanoicacidandlacticacidwerehigherinN.rust

7、icathaninK326,however,theproportionsofthefourorganicacidsintotalorganicacidswerenotsignificantlydifferentbetweenthetwogenotypes;thedifferenttolerancetoCdofthetwogenotypesprobablyrelatedtotheamountsofthefourorganicacids,ratherthantheproportionofeachorganicacid.Keywor