不同类型油菜光合生理特性及其与农艺性状的相关分析

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中图分类号：S565.4 文献标识码：A文章编号：0439-8114(2025)08-0042-06DOI:10.14088/j.cnki.issn0439-8114.2025.08.007开放科学（资源服务）标识码（OSID）：

Photosynthetic physiological characteristics of different types of rapeseed and their correlation with agronomic traits

ZHAO Cai-xia,WANG Jin-xiong，NAN Zhi-qiang,LI Shi-meng，YANG Guang-huan (Instituteof Agriculture,TibetAcademyof Agricultureand Animal Husbandry Sciences,Lhasa 85OO32,China）

Abstract:Forty-fourdiferent typesofrapeseedwereusedasmaterials.Tephotosyntheticidices，chlorophyllcontentandgreen leafareaweremeasuredattheinitialfloweringstage，andtheagronomictraitswereinvestigatedatthematurestage.Thephotosytet iccharacteristsofdiferenttypsofapesedandteirorrelationwithgronomictraitsereanalyed，ndmaterialswithhighet photosyntheticeficiencywerescreenedout.Theresultsshowedthathechlorophyllcontentandnetphotosyntheticateatteiitial flowering stage were in the order of introduced Brassica napus>Brassica juncea > local Brassica napus>Brassica campestris. The net photosynthetic rate of the 44 materials ranged from 2.20 to 11.47μmol/(m2⋅s) ，showing a skewed normal distribution. The net photosyntheticrate of mostmaterialswas 4 4～6μmol/(m2⋅s) ，accounting for 47% of the total materials.Correlation analysis showed that the net photosyntheticateatthinitialfoweringstageassignficantlypositivelyorelatedwithplanthight，ranchingpositionandumberofsiliquesperplantwihorrelationcoeficentsof.426,34and.89,espectively.Thematealswithghettos theticrateat theinitialfoweringstagewrescreenedout，whichereintroducedBrasicanapusvarietyY16,andBrasscajuncevarieties“94(08)”and“98(O2)”，with net photosynthetic rates of 11.47,10.33 and 11.04μmol/(m2⋅s) respectively.

KeyWords:Brasica napusL.;BrassicajunceaL.;BrassicacampestrisL.;netphotosyntheticrate；agronomic traits

油菜是世界主要油料作物，也是主要的食用植物油和植物蛋白质来源。（剩余10713字）