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1、中国农业科学2005,38(9):1734-1738ScientiaAgriculturaSinica中国软质小麦品种戊聚糖含量的遗传变异及其与饼干加工品质的关系1,31,211,32张岐军,钱森和,张艳,何中虎,姚大年1(中国农业科学院作物科学研究所/国家小麦改良中心/农业部作物遗传育种重点实验室,北京100081;23安徽农业大学,安徽合肥230036;国际玉米小麦改良中心(CIMMYT)中国办事处,北京100081)摘要:戊聚糖是影响小麦营养和加工品质的重要因素。将17份软质小麦品种进行了两年多点
2、试验,分析了水溶性戊聚糖、非水溶性戊聚糖和总戊聚糖含量的遗传变异和基因型、环境及其互作对其影响;同时研究了3种戊聚糖含量与其它品质性状的关系。结果表明,中国软质小麦品种3种戊聚糖含量均存在显著差异,水溶性戊聚糖、非水溶性戊聚糖和总戊聚糖含量的变异范围分别为0.54%~1.07%、0.87%~1.43%和1.51%~2.47%。基因型和环境对3种戊聚糖含量的影响均达1%显著水平,且基因型是影响水溶性戊聚糖含量的主要因素;基因型和环境互作对其影响未达显著水平。3种戊聚糖含量与粉质仪吸水率呈5%显著正相关,r
3、值分别为0.51、0.55和0.66;水溶性戊聚糖含量与峰值粘度、低谷粘度、最终粘度和峰值时间之间的相关均达1%显著水平,r值分别为-0.72、-0.72、-0.66和-0.70;水溶性戊聚糖和总戊聚糖含量与饼干直径的相关皆达1%的显著水平,相关系数分别为-0.70和-0.69。因此,在软质小麦育种中应注意选择戊聚糖含量较低的品种。关键词:普通小麦;戊聚糖;遗传变异;饼干品质VariationofPentosansinChineseSoftWheatCultivarsandCorrelationswit
4、hCookieQuality1,31,211,32ZHANGQi-jun,QIANSen-he,ZHANGYan,HEZhong-hu,YAODa-nian1(CropScienceInstitute,ChineseAcademyofAgriculturalSciences/NationalWheatImprovementCenter/KeyLaboratoryforCrop23GeneticsandBreedingMinistryofAgriculture,Beijing100081;AnhuiAgr
5、iculturalUniversity,Hefei230036;CIMMYTChinaOffice,Beijing100081)Abstract:Highwaterabsorbingcapacityofpentosansisanimportantparametertoaffectprocessingqualityofcommonwheat.Seventeengenotypesofsoftwheatweresowninthreelocationsfortwoyearstostudythegeneticva
6、riationofthewater-solublepentosans(WSP),water-insolublepentosans(WIP),andtotalpentosans(TP),toinvestigatetheeffectsofgenotype,environmentandtheirinteractiononpentosans,andtodeterminetherelationshipsbetweenpentosansandotherqualityparameters.Significantdif
7、ferenceinpentosanscontentswereobservedinsoftwheatgenotypes,therangeforWSP,WIPandTPwere0.54%–1.07%,0.87%–1.43%and1.51%–2.47%,respectively.Theyweremainlyinfluencedbygenotypeandenvironment,andgenotypewasthemostimportantfactordeterminingWSP,andtheeffectofgen
8、otypeandenvironmentinteractionwasnotsignificant.TheWSP,WIP,andTPwerepositivelycorrelatedwithFairnographwaterabsorption,andthecorrelationcoefficientswere0.51,0.55and0.66,respectively.WSPwasnegativelycorrelatedwithpeakviscos