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时间:2018-04-15
《不同光质配比对大豆幼苗形态及光合生理参数的影响》由会员上传分享,免费在线阅读,更多相关内容在学术论文-天天文库。
1、中国油料作物学报2014,36(3):343-348ChineseJournalofOilCropSciencesdoi:10.7505/j.issn.1007-9084.2014.03.008不同光质配比对大豆幼苗形态及光合生理参数的影响**张勇,叶芝兰,杨峰,张丽君,聂邵仙,杨文钰(四川农业大学农学院,农业部西南作物生理生态与耕作重点实验室,四川成都,611130)摘要:室内模拟玉米/大豆套作下大豆冠层光质配比,设定白光(对照)、红光/蓝光为0.8和红/远红光为0.6三个处理,大豆品种选用贡选1号和桂夏3号,研究大豆幼苗形态及光合生理参数在不同光质配比下的变化特征。结果表明:红光/蓝
2、光配比和红光/远红光配比处理与对照相比,大豆幼苗株高分别降低和增加,茎粗则相反。而根长、地上生物量、地下生物量及根冠比在红光/远红光配比处理下最低,与白光和红光/蓝光配比处理相比差异极显著(P<0.01),但白光和红光/蓝光配比处理间差异不显著(P>0.01)。叶面积和叶绿素含量在红/远红光配比处理下分别最低和最高,而两个大豆品种的净光合速率(Pn)、气孔导度(Gs)和PSII实际光化学量子产额(ΦPSⅡ)均在红光/蓝光处理下最高,而非光化学猝灭系数(NPQ)最低。两个大豆品种的胞间CO2浓度(Ci)、蒸腾速率(Tr)、PSⅡ原初光能转化效率(Fv/Fm)、PSⅡ潜在活性(Fv/Fo)在
3、各处理间规律不明显。关键词:大豆;红光;远红光;蓝光;光质;生长中图分类号:S565.101文献标识码:A文章编号:1007-9084(2014)03-0343-06Effectsofdifferentlightqualitiesonmorphologicalandphotosyntheticphysiologicalparametersofsoybeanseedlings**ZHANGYong,YEZhi-lan,YANGFeng,ZHANGLi-jun,NIEShao-xian,YANGWen-yu(CollegeofAgronomy,SichuanAgriculturalUnive
4、rsity/KeyLaboratoryofCropEcophysiologyandFarmingSysteminSouthwest,MinistryofAgriculture,Chengdu,611130,China)Abstract:Inthisstudy,threetreatmentsofwhitelight(CK),red/blueratio=0.8,andred/far-redratio=0.6weresetforsimulatingeffectsofdifferentlightqualitiesonthephysiologyandphotosyntheticcharacteri
5、sticsofsoybeanseedlingsinmaize/soybeanrelayintercroppingconditions.Gongxuan1andGuixia3ofsoybeanvarietieswerechosenasmaterial.Themorphologyandphotosyntheticphysiologicalparametersofsoybeanseedlingsunderdifferentlightqualitywereanalyzed.Theresultsshowedthatsoybeanseedlingsheightweredecreasedandincr
6、easedinred/bluetreatmentandred/far-redtreatmentcomparedwithCK,respectively.Andtheoppositeresultwasobservedinstemdiameter.Rootlength,abovegroundbiomass,belowgroundbiomassandshootratioofsoybeanseedlingsinthered/far-redtreatmentweredecreasedsignificantlycomparedwiththewhiteandred/bluetreat-ment(P<0.
7、01),buttherewasnodifferenceoftheseparamentsinwhiteandred/bluetreatment.Thevaluesofleafareaandphotosyntheticpigmentconcentrationinred/farredtreatmentappearedminimumandmaximumre-spectively.Inaddition,Themaximumvaluesofne
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