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1、園藝學(xué)報(bào)2008,35(5):673-680ActaHorticulturaeSinica光質(zhì)對(duì)姜生長(zhǎng)及光能利用特性的影響1,213133張瑞華,徐坤,董燦興,李瑩瑩,呂杰12(山東農(nóng)業(yè)大學(xué)園藝科學(xué)與工程學(xué)院/作物生物學(xué)國(guó)家重點(diǎn)實(shí)驗(yàn)室,山東泰安271018;濰坊職業(yè)學(xué)院農(nóng)業(yè)工程系,3山東濰坊261041;菏澤學(xué)院園林工程系,山東菏澤274015)摘要:以彩色電光源創(chuàng)造不同光質(zhì)環(huán)境,研究了光質(zhì)對(duì)姜生長(zhǎng)、葉片光合作用及葉綠素?zé)晒鈪?shù)的影響。結(jié)果表明:室內(nèi)人工光源條件下,姜苗生長(zhǎng)量、葉綠素含量及葉片光合
2、速率(Pn)以白光和紅光處理較高,藍(lán)光居中,綠光較低。室內(nèi)不同光質(zhì)處理的姜苗移至室外自然光照條件下測(cè)定葉片Pn和光呼吸速率(Pr),其中白光處理較高,藍(lán)光、紅光和綠光處理依次降低,而Pr/Pn則相反;葉片F(xiàn)v/Fm、Fv′/Fm′及qP在午間強(qiáng)光下顯著降低,其值以白光處理較高,藍(lán)光、紅光和綠光處理依次降低,PSⅠ和PSⅡ之間激發(fā)能分配不平衡偏離系數(shù)(β/α-1)則剛好相反;葉片用于光化學(xué)反應(yīng)的激發(fā)能(P)以白光處理較高,綠光處理較低,藍(lán)光、紅光處理居中,而天線熱耗散能量(D)和反應(yīng)中心過(guò)剩能量(E
3、x)則以綠光處理較高,白光處理較低。關(guān)鍵詞:姜;光質(zhì);生長(zhǎng);光合速率;葉綠素?zé)晒庵袌D分類(lèi)號(hào):S63215文獻(xiàn)標(biāo)識(shí)碼:A文章編號(hào):05132353X(2008)0520673208EffectsofLightQualityonGrowthandLightUtilizationCharacteristicsinGinger1,213133ZHANGRui2hua,XUKun,DONGCan2xing,LIYing2ying,andLüJie1(StateKeyLaboratoryofCropBiolo
4、gyandCollegeofHorticultureScienceandEngineering,ShandongAgriculturalUniversity,2Taipan,Shandong271018,China;AgriculturalEngineeringDepartmentofWeifangVocationalCollege,Weifang,Shandong3261041,China;LandscapeEngineeringDepartmentofHezeUniversity,Heze,S
5、handong274015,China)Abstract:Effectsoflightqualityonthegrowth,photosynthesisandchlorophyllfluorescenceofgingerwereinvestigatedinthisstudy.Theresultsindicatedthatwhiteorredlightinducedthegreatestgrowth,chlo2rophyllcontentandnetphotosyntheticrate(Pn),fo
6、llowedbyblueandgreenlightinorderfromhightolowlevel.Whengingerseedlingsweretransferredtosunlight,thePnandphotorespiration(Pr)ofleavestreatedwithwhitelightwerethehighest,followedbyblue,redorgreenlightinturn,whilethatofPr/Pnwasre2verse.Themaximalphotoche
7、micalefficiency(Fv/Fm)andefficiencyofexcitationenergycapturebyopenPSⅡreactioncentres(Fv′/Fm′)aswellasphotochemicalquenchingcoefficient(qP)decreasedmarkedlyun2dermiddystronglight.Buttheirvaluesindifferenttreatmentsweredifferent,withthehighestvaluesinwh
8、itelighttreatment,followedbyblue,redorgreenlightinorderfromhightolowlevel.Contrarily,white,blue,redorgreenlighttreatmentinducedtherelativedeviationfromfullbalancebetweentwophotosystems(β/α-1)ingingerleavesincreasedinturn.Inparallel,theexcitati
