摘要
Inthisstudy,effectsoftemperature,lightandtheirinteractionsonallelopathiceffectsandthefunctionaltraitsspecificleafarea(SLA)andstemmassfraction(SMF)ofdifferentallelopathicpotentialriceaccessionsatdifferentgrowthstageswereanalyzed.Themainresultswereasfollows:Allelopathicresponsestotemperatureandlightvariedwithdifferentallelopathicpotentialriceaccessionsatdifferentgrowthstages.Withtheriseoftemperatureandtheextensionofphotoperiod,allelopathiceffectincreasedfirstlyandthendecreasedat2–3leafstage,butincreasedconstantlyatthe4–5and7–8leafstagesinstrongallelopathicriceaccessions[O.longistaminata,F1(O.longistaminata×RD23),F2(RL159andRL169)].Temperaturehadsignificantimpactonallelopathiceffectwithoutconsideringlightfactors,butlightshowedlittleeffectonriceallelopathyatthesametemperatureconditions.Thegreatestallelopathiceffectwasattainedwithmoderatetemperatureandlongphotoperiodat2–3leafstageinstrongallelopathicriceaccessions,butallthericeaccessionsshowedweakallelopathiceffectsatthelowtemperaturecondition(15oC/10oC),andtheinfluenceofdifferentfactorsonallelopathyfollowedageneraltrendastemperature>leafstage>light,indicatingthatamongthemultiplefactorsimpactingriceallelopathy,temperaturewasthemainfactor.AllelopathiccharacteristicsofF1andF2tovarioustemperatureandlightweresimilartoO.longistaminata,showingthatallelopathicgenesfromwildricecanbeexpressedinitsdescendants.TemperatureandlightalsohadsignificanteffectsonSLAandSMF,andriceallelopathywascloselycorrelativetoSLAinstrongallelopathicriceaccessionsatthe4–5and7–8leafstages,buttherewasnocorrelationbetweenriceallelopathyandSMFatdifferentgrowthstages.TheseresultssuggestedthatriceadjusttherelationshipbetweenallelopathyandSLAandadapttothevariedenvironments,andthathightemperatureandlon
出版日期
2018年01月11日（中国期刊网平台首次上网日期，不代表论文的发表时间）
