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1、文章编号:1001-4829(2006)05-0791-05四川小麦地方品种农艺性状分析陈华萍1,2,3,魏育明1,2,王照丽4,郑有良1宀(1・西南作物基因资源与遗传改良教育部重点实验室,四川雅安625014;2.四川农业大学小麦研究所,四川雅安625014;3.四川农业大学生命科学与理学院,四川雅安62501414.成都市环境保护科学研究院,四川成都610072)摘要:以67份四川小麦地方品种为试验材料进行农艺性状分析,并对性状之间进行简单相关和借相关分析,多元逐步回归和通径分析,旨在为小麦的還传改良与
2、育种利用提供依据。结果表明:四川小麦地方品种植株总体僞离,有效穗数多数在10个以下,小穗数平均为20.4,部分品种穗粒数较多、大于70粒,但千粒重和单株产量较低,平均值分别为27.5和11.2g。筛选出一些单一或综合农艺性状优良的材料。性状相关分析痕明:随等有效勇數、穗粒數和千社重增加,单株产提高。逐步回归分析和通径分析都表明:有效務数、稳粒数和千粒重对单株产量的正向直接彩响校大。多元回归方程:丫=・21.96*1.54&+0.18&+0.42忌解释了单株产量变异的97.09%0因此,高产育种时,宜考虑选择
3、有效穆數、穗桂数和千粒重高的小麦品种。关键词:小麦;农艺性状;相关分析;通径分析;回归分析中图分类号:S512」文献标识码:AAnalysisofagronomiccharactersofSichuanwheatlandracesCHENHua-pingu2-3fWElYu-ming1-2,W.4NCZhao-li4,ZHENGYou-liang1-^(l.KeyI.alxiratoryofCropGeneticResourcesandImprovementinSouthwestChina,Ministry
4、ofEducation9SichunaYa'an625014;2.TriticeaeRe・searchInstitute,SichuanAgriculturalUnivenaty,SichunaYa'an625014;3.QJIegpofLifeScienceandScience,SichuanAgriculturalUniveraity,SichuanYa'an625014,China;4.ChengduEnvironmentProtectionScienceAcademy,SichuanChengdu6
5、10072,China)Abstract:Hieagronomiccharactenjof67Sichuanu4ieatlandraceswereevaluatedbyusingthesUtidticalmethodsofsirrpleandpartialcorrelationanalysis,multiplestepwiseregressionandpathanalysisinordertoprovidehelpfulinformationforthegeneticim(xovementofwheat.H
6、ieresultsindicatedthattheplantheightofnx»tlandraceswastoohi曲tobeusedforbreedingprogram.andthe^ikenumberperplantofmortlandraceswaslessthatten."Hieaveragenumberofspikeletswas20・4・Hiegrainnumberper爭ilceofsomematerialswasmorethan70,butthe1000-grainweightandgr
7、ainweightperplantofthanwerelower,uilhthemeanof27.5gand11.2g9respectively.Afewlandraceswereselectedoutbasedontheirsin^eorgeneralagronomiccharacters・Correctionanalysisofcharactereindicatedthatwiththeincreaseof甲ikenumberperplant,grainnumberperspikeand1000-gra
8、inweight,thegrainweightperplantwouldincreasedobviously.Thestepwiseregressionandpathanalysis(/agronomiccharactersshowedthatthepositiveeffectsofspikenumberperplant9grainnumberperspikeand1000-grainweightongrainw