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《小麥葉片水分利用效率與幾個(gè)生理指標(biāo)的相關(guān)性研究》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)，2005,12：1593-1599小麥葉片水分利用效率及相關(guān)生理性狀的關(guān)系研究張娟1,2張正斌1,*謝惠民2,*董寶娣1胡夢(mèng)蕓1徐萍1（1中國(guó)科學(xué)院遺傳與發(fā)育生物學(xué)研究所農(nóng)業(yè)資源研究中心，河北石家莊0500212西北農(nóng)林科技大學(xué)，陜西楊凌712100）摘要：利用19個(gè)抗旱性不同的小麥品種，對(duì)干旱狀態(tài)下葉片水分利用效率和光合速率、蒸騰速率等12個(gè)指標(biāo)之間的關(guān)系進(jìn)行了研究。結(jié)果表明，葉片水分利用效率與葉片光合速率、蒸騰速率、氣孔導(dǎo)度、胞間二氧化碳濃度、水勢(shì)和葉片離體失水速率之間的關(guān)系密切，說(shuō)明這些生理性狀是瞬間和短時(shí)期葉片水分利用效率的直接影響因素；而與葉片抗氧化酶活性、蠟
2、質(zhì)含量、葉片溫度和相對(duì)含水量相關(guān)性不大。因此認(rèn)為，應(yīng)該有針對(duì)性地的研究與水分利用效率關(guān)系密切的生理性狀，為小麥抗旱節(jié)水遺傳育種研究提供理論依據(jù)。關(guān)鍵詞：小麥;水分利用效率;生理指標(biāo);相關(guān)性;干旱脅迫中圖分類(lèi)號(hào)：S512TheRelationshipbetweenWaterUseEfficiencyandRelatedPhysiologicalTraitsinWheatLeavesZHANGJuan1,2,ZHANGZheng-Bin1,*,XIEHui-Min2,*,DONGBao-Di1,HUMeng-Yun1,XUPing1(1CenterofAgriculturalReso
3、urce,InstituteofGeneticsandDevelopmentalBiology,ChineseAcademyofScience,Shijiazhuang050021,Hebei;2NorthwestSci-TechUniversityofAgricultureandForestry,Yangling712100,Shaanxi,China)Abstract:Watershortageisamainlimitedfactortoagricultureandcropproduction,soitisimportanttoimprovethecropwateruseef
4、ficiency(WUE)inlimitedwaterresource.TheleafWUEisthephysiologicalfoundationforimprovingfieldwateruseefficiency.InearlyresearchesonlyoneorafewwheatvarietieswereemployedtoanalyzetherelationshipbetweenWUEandsingleorafewphysiologicaltraits,oronlythedailyvariationregularityofleafWUEandrelevantphysi
5、ologicaltraitsstudied.19wheatcultivars,possessingdifferentdrought-resistance,fromdifferentwinterwheatgrowthregionsinChina,wereemployedinthisdrought-resistancetrial,withnoirrigationduringwholegrowthperiod,foranalyzingthecorrelationbetweenleafWUEandother11traitsofwheatflagleaf,includingphotosyn
6、theticrate(Pn),transpirationrate(Tr),stomataconductance(Cond),intercellularCO2concentration(Ci),waterpotential(Ψw),waterlossrateofcuttingleaves(RWL),anti-oxidativeenzymeactivities.TheresultsshowedthatthereweresignificantlinearcorrelationsbetweenleafWUEandsixphysiologicaltraitsincludingPn,Tr,C
7、ond,Ci,ΨwandRWL,sothatthesixtraitswereconsideredtobethedirectinfluencefactorstoinstantaneousleafWUEtowhichmoreattentionshouldbepaidinwheatbreeding.TherewereinsignificantcorrelationsbetweenleafWUEandotherfourtraitsincludinganti-oxidativeenzyme
