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时间:2019-06-02
《甘蓝型油菜生育期天数与产量构成性状的相关分析_郑本川》由会员上传分享,免费在线阅读,更多相关内容在行业资料-天天文库。
1、中国油料作物学报2013,35(3):240-245ChineseJournalofOilCropSciencesdoi:10.7505/j.issn.1007-9084.2013.03.002甘蓝型油菜生育期天数与产量构成性状的相关分析1,21111郑本川,张锦芳,李浩杰,蒲晓斌,崔成,11,22*1*柴靓,蒋俊,牛应泽,蒋梁材(1.四川省农业科学院作物研究所,四川成都,610066;2.四川农业大学农学院,四川温江,611130)摘要:对四川省大面积推广的甘蓝型油菜品种各生育期天数与单株产量及产量构成性状进行相关性和通径分析,结果表明:(1)营养生长天数和角果成熟天数均与单
2、株产量显著正相关,开花天数与单株产量显著负相关;营养生长天数与每果粒数极显著正相关,但与千粒重负相关;开花天数与产量构成性状负相关;角果成熟天数与每果粒数及千粒重极显著正相关,但与单株有效角果数负相关。(2)各生育期天数对单株产量的作用主要通过产量构成性状的间接作用形成;生育期性状对每果粒数的作用大小为角果成熟天数﹥营养生长天数﹥开花天数;对千粒重的作用效果为角果成熟天数﹥开花天数﹥营养生长天数。因此,在甘蓝型油菜品种的选育中,在进行产量构成性状选择的同时,辅以生育期天数的选择,充分利用各性状间的相互作用,提高单株产量以到达高产的目的。关键词:甘蓝型油菜;生育期天数;产量构成性
3、状;单株产量中图分类号:S565.403文献标识码:A文章编号:1007-9084(2013)03-0240-06CorrelationbetweendurationofgrowthperiodsandyieldcomponentsofBrassicanapusL.1,2111ZHENGBen-chuan,ZHANGJin-fang,LIHao-jie,PUXiao-bin,111,22*1*CUICheng,CHAILiang,JIANGJun,NIUYing-ze,JIANGLiang-cai(1.CropsResearchInstitute,SichuanAcademyo
4、fAgriculturalSciences,Chengdu610066,China2.SichuanAgriculturalUniversity,Wenjiang611130,China)Abstract:Coefficientsandpathanalysisondurationofgrowthperiodsandyieldcomponentswereevaluatedu-sing39commercialrapeseed(BrassicanapusL.)cultivarsinSichuanProvince.Resultsshowedthatbothdura-tionsofveg
5、etativeperiodandsiliquematuringperiodhadsignificantpositivecorrelationwithyield.Floweringdura-tionhadnegativecorrelationwithyield.Amongtheyieldcomponents,vegetativedurationhadsignificantpositivecorrelationwithseedspersilique,butnegativelycorrelatedwith1000-seedweight.Floweringdurationwasnega
6、-tivelycorrelatedwithyieldcomponentscharacteristics.Siliquematuringdurationhadsignificantpositivecorrelationwithbothseedspersiliqueand1000-seedweight,butnegativelycorrelatedwitheffectivesiliqueperplant.Thedurationsofgrowthperiodsaffectedyieldperplant,mainlyfromindirecteffectsofyieldcomponent
7、s.Theeffector-derofdurationsonseedspersiliquewas:maturingduration>vegetativeduration>floweringduration.Theeffectorderon1000-seedweightwasthatmaturingduration>floweringduration>vegetativeduration.Resultsindica-tedtheimportanceofoptimumgrowthperiodse
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