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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
