Correlation between Flowering Time and Meteorological Factors in Magnoliaceae
[Objective]The objective of this study was to investigate the correlation between the flowering phenology of Magnoliaceae and meteorological variables.[Method]Eight Magnoliaceae species,including Manglietia patungensis,Yulania denudata,Liriodendron chinense,Magnolia soulangeana,Magnolia grandiflora,Michelia chapensis,Michelia maudiae and Michelia macclurei,were taken as research objects in this study,and statistically analyzed with historical meteorological factors such as average temperature(Tavg),maximum temperature(Tmax),solar radiation(SR),diurnal temperature range(DT),sunshine hours(SD)and accumulated temperature(GDD).[Result]The results showed that the initial flowering period of the 8 species was significantly affected by Tavg,Tmax,SR,DT and GDD.There was a obvious negative correlation between the initial flowering period of Y.denudata,M.grandiflora,M.chapensis and M.soulangeana and Tavg in the current month or the previous 1-2 months of the average initial flowering period.The initial flowering period of M.patungensis,Y.denudata,M.soulangeana,M.grandiflora and M.chapensis was also clearly negatively correlated with Tmax of the month or the previous 1-2 months during the average initial flowering period.In SR,there was a significant negative correlation between the initial flowering period of Y.denudata,M.soulangeana,M.chapensis,and M.macclurei and the indicator of the previous month during the average initial flowering period.In GDD,the initial flowering period of Y.denudata,M.soulangeana,M.chapensis,M.maudiae was also significantly negatively correlated with the indicator of the previous 1-3 months during the average initial flowering period.In DT,the initial flowering period of Y.denudata,L.chinense,M.grandiflora and M.chapensis also showed a significant negative correlation with DT in the current month or one month before the average initial flowering period.[Conclusion]There was a clear positive correlation between flowering length and SR,SD and GDD in most of the 8 Magnoliaceae species.The relevant results can provide scientific reference for regulating Magnoliaceae flowering period.
Magnoliaceaefloweringaverage temperatureaccumulated temperaturemaximum temperaturesolar radiationdiurnal range
万方数据
维普
