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1、中国水稻科学(ChinJRiceSci),2016,30(5):559-566http://www.ricesci.cnDOI:10.16819/j.1001G7216.2016.5158559温度对不同叶龄长雄野生稻及其后代化感作用的影响徐高峰申时才张付斗∗张玉华(云南省农业科学院农业环境资源研究所,昆明650205;∗通讯联系人,EGmail:fdzh@vip.sina.com)AllelopathicResponsetoDifferentTemperatureConditionsofWildRice(OryGzalongistaminata)a
2、ndItsDescendantsXUGaoGfeng,SHENShiGcai,ZHANGFuGdou∗,ZHANGYuGhua(AgriculturalEnvironment&ResourceResearchInstitute,YunnanAcademyofAgriculturalSciences,Kunming650205,China;∗Correspondingauthor,EGmail:fdzh@vips.inac.om)XUGaofeng,SHENShicai,ZHANGFudou,etal.Allelopathicresponsetodif
3、ferenttemperatureconditionsofwildrice(Oryzalongistaminata)anditsdescendants.ChinJRiceSci,2016,30(5):559G566.Abstract:Riceallelopathyisconsideredasacomplexphenomenonofchemicalecology,andtemperatureplaysanimportantroleinregulatingallelopathicpotential.Formerstudieshavedemonstrate
4、dthatthewildrice(Oryzalongistaminata)hashighallelopathicpotential.Therefore,understandingtheallelopathicresponsestotemperatureofwildriceanditsdescendantsisveryimportanttofinallyexploitandutilizeallelopathicgenesofwildgermplasmreGsources.Therootexudatesofdifferentallelopathicpot
5、entialriceaccessions(OL,RD23,F1,RL159,RL169andRL219)wererespectivelycollectedbytheresinofAG50WGX8,followedbytheevaluationoftheirallelopathicpotentialtobarnyardgrass.Theresultsdemonstrated:1)Allelopathicresponsetotemperature,leafagesandtemperature×leafageweresignificantlydiffere
6、ntamongdifferentallelopathicpotentialriceaccessions.Theallelopathywassignificantlyaffectedbytemperature,leafageandtemperature×leafageofOL,F1,RL159andRL169,butlowallelopathicriceaccessionsofRD23andRL219followedanoppositetrend.2)Regardlessofleafages,therootexudateshaveweakestinhi
7、bitoryabilitytothegrowthofbarnyardgrassatlowtemperature(15℃).TheeffectsofallelopathicriceaccessionsOL,F1,RL159andRL169weregreaterthanlowallelopathiconesatlowtemperature(15℃)condition.3)Hightemperaturewasconducivetotheallelopathicenhancementofallelopathicrice,buttheallelopathywa
8、snotalwaysenhancedwithincreasingtemperature.Theallelop