摘要
为了研究各个农艺性状对小麦(Triticum aestivum L.)产量的影响,利用2015-2017年的品鉴试验数据,对基本苗(X_1)、最高总茎数(X_2)、有效穗(X_3)、穗粒数(X_4)、千粒重(X_5)、容重(X_6)、株高(X_7)7个主要农艺性状和产量(Y)的相关关系进行分析,并进行通径分析。结果表明,各个农艺性状和产量都表现为正相关,相关系数r大小表现为穗粒数>千粒重>株高>容重>有效穗>最高总茎数>基本苗。其中穗粒数、千粒重、株高、容重和有效穗与小麦产量均达到了极显著水平(r分别为0.536、0386、0.272、0.269、0.206)。回归分析建立回归方程,为Y=-547.605+1.464X_2+3.89X_3+8.607X_4+7.996X_5,各个性状对产量的贡献大小顺序为穗粒数>千粒重>有效穗>最高总茎数。因此在育种中,选择千粒重和有效穗适当,穗粒数较高的品种,是增加产量潜力的有效途径。
In order to study the effects of various agronomic traits on wheat yield,the correlation analysis and path analysis were adopted to analyze the relationship between seven main agronomy traits basic seedlings(X1),maximum number of tillers(X2),number of productive ear(X3),number of grain per ear(X4),thousand seed weight(X5),bulk density(X6),plant height(X7)and wheat yield(Y),using the data of wheat variety identification test as research objects during 2015-2017.The results showed that the yield was positively correlated with the seven main agronomy traits.The correlation coefficient r expressed as:number of grain per ear>thousand seed weight>plant height>bulk density>number of productive ear>maximum number of tillers>basic seedlings.The grain number per ear,thousand seed weight,plant height,bulk density,number of productive ear and per yield of wheat all reached the extremely remarkable level(The correlation coefficient r were 0.536,0.386,0.272,0.269 and 0.206,respectively).The regression equation was established by regression analysis:Y=-547.605+1.464 X2+3.89 X3+8.607 X4+7.996 X5.The contribution of each trait to yield was in order:Number of grain per ear>thousand seed weight>number of productive ear>maximum number of tillers.So by selecting varieties with suitable thousand seed weight and number of productive ear and higher number of grain per ear could improve the yield.
作者
孙华卫
张道荣
刘先斌
凌冬
周芳菊
陆天泰
汤清益
邹贤斌
SUN Hua-wei;ZHANG Dao-rong;LIU Xian-bin;LING Dong;ZHOU Fang-ju;LU Tian-tai;TANG Qing-yi;ZOU Xian-bin(Xiangyang Academy of Agricultural Sciences,Xiangyang 441057,Hubei,China;Hubei Collaborative Innovation Center for Grain Industry,Yangtze University,Jingzhou 434025,Hubei,China;Suixian Agricultural Science Institute,Suizhou 431500,Hubei,China)
出处
《湖北农业科学》
2018年第A02期23-26,共4页
Hubei Agricultural Sciences
基金
国家重点研发计划“七大农作物育种”试点专项(2017YFD0100800)
农业部现代产业技术体系专项(CARS-3)
湖北省农业科技创新中心项目(2016-620-000-001-058)
