資源描述：
《花后漬水高溫交互效應(yīng)對(duì)冬小麥旗葉光合特性及產(chǎn)量的影響》由會(huì)員上傳分享，免費(fèi)在線閱讀，更多相關(guān)內(nèi)容在學(xué)術(shù)論文-天天文庫(kù)。
1、作物學(xué)報(bào)ACTAAGRONOMICASINICA2012,38(6):1071?1079http://www.chinacrops.org/zwxb/ISSN0496-3490;CODENTSHPA9E-mail:xbzw@chinajournal.net.cnDOI:10.3724/SP.J.1006.2012.01071花后漬水高溫交互效應(yīng)對(duì)冬小麥旗葉光合特性及產(chǎn)量的影響1,21,*1111吳進(jìn)東李金才魏鳳珍王成雨張一武文明12安徽農(nóng)業(yè)大學(xué)農(nóng)學(xué)院,安徽合肥230036;皖西學(xué)院,安徽六安237012摘要:漬水和高溫是長(zhǎng)江中下游麥區(qū)
2、冬小麥(TriticumaestivumL.)生育中后期的主要?dú)庀鬄?zāi)害因子。2009—2011年連續(xù)2個(gè)生長(zhǎng)季盆栽煙農(nóng)19,在籽粒形成期(花后5~8d)和乳熟期(花后15~18d)分別設(shè)漬水(土表水層1cm)、高溫[晝(35±2)℃/夜(25±2)℃]和漬水+高溫處理,探討了漬水和高溫雙重脅迫對(duì)小麥開(kāi)花后光合特性及產(chǎn)量的影響。結(jié)果表明,花后漬水、高溫、漬水+高溫逆境均顯著降低旗葉凈光合速率(Pn)、葉綠素含量(SPAD值)、氣孔導(dǎo)度(Gs)和蒸騰速率(Tr),增加胞間CO2濃度(Ci);同時(shí)降低穗粒數(shù)、千粒重及產(chǎn)量,但對(duì)成穗數(shù)影響不顯
3、著。漬水和高溫脅迫對(duì)旗葉光合作用的主要限制因素是非氣孔因素。從產(chǎn)量平均相對(duì)受害率看,其影響為漬水+高溫逆境(37.7%)>漬水逆境(21.1%)>高溫逆境(17.6%),而脅迫時(shí)期的影響為籽粒形成期(30.8%)>乳熟期(20.1%)。漬水和高溫的交互效應(yīng)顯著,且籽粒形成期逆境不良效應(yīng)顯著大于乳熟期。關(guān)鍵詞:冬小麥;漬水;高溫;漬水高溫交互效應(yīng);光合特性;產(chǎn)量EffectofInteractionofWaterloggingandHighTemperatureafterAnthesisonPhotosyntheticCharacter
4、isticsofFlagLeafandYieldinWinterWheat1,21,*1111WUJin-Dong,LIJin-Cai,WEIFeng-Zhen,WANGCheng-Yu,ZHANGYi,andWUWen-Ming12AgriculturalCollege,AnhuiAgriculturalUniversity,Hefei230036,China;WestAnhuiUniversity,Lu’an237012,ChinaAbstract:Waterloggingandhightemperaturearemainstre
5、ssfactorsduringlategrowingperiodofwinterwheat(Triticumaesti-vumL.)inYangtzeValleyregionofChina.Tounderstandtheeffectofinteractionofwaterloggingandhightemperatureonpho-tosyntheticcharacteristicsandgrainyieldofwheat,wecarriedoutapotexperiment,usingthevarietyofYannong19,in
6、continu-ousgrowingseasonsfrom2009to2011.Atgrain-forming(5–8dafteranthesis)andmilking(15–18dafteranthesis)stages,wa-terlogging(1cmofsurfacewaterlayer),hightemperature(35±2°Cofdaytime/25±2°Cofnighttime),andwaterlogging+hightemperaturestresseswereimposedtowheatplants,separ
7、ately.Waterlogging,hightemperature,andbothstressesshowedsignifi-cantlyeffectsonphotosyntheticcharacteristicsofflagleafandyieldreducingphotosyntheticrate(Pn),chlorophyllcontent(SPADreading),stomatalconductance(Gs),andtranspirationrate(Tr);enhancingintercellularCO2concent
8、ration(Ci);anddeclininggrainnumberperspike,1000-grainweight,andgrainyield.However,inthecase,spikenumberperpotw
