摘要
为了更加科学地评价热带改良种质在黄淮海玉米生态区的利用模式,以及产量构成因素间的相互关系。以CM07与不同母本杂交的F1为研究对象,通过方差及相关性分析,测得产量构成因素间的差异、相关性及杂优模式间的差异。结果表明:不同处理间的差异均达到极显著水平,T2的各产量构成因素综合表现最佳,小区产量为15.17 kg,表明郑58×CM07的特殊配合力最强;秃尖长的变异系数最大为180.47,说明秃尖长受多基因控制。各产量构成因素与产量的相关性依次为穗长>行粒数>穗粗>百粒重>穗行数>含水量>秃尖长,其中穗长、行粒数与产量呈极显著正相关,秃尖长与产量呈显著负相关。CM07的最佳杂优模式为P系×CM07,与其他杂优模式比较达显著水平,其次是瑞德×CM07,旅大×CM07的杂优模式最差。热带改良种质CM07利用时应注意秃尖长对产量的影响,为CM07在黄淮海夏玉米区的杂优模式利用提供理论依据。
To evaluate the utilization model of the tropical improved germplasm in the corn ecological area in Huang-Huai-Hai, and the interrelationships among yield component traits, F1 of CM07 hybridization with different female-parents were studied. With the variance analysis and correlation analysis, the differences among yield component traits and the differences between correlations with heterotic pattern were measured.The results showed that the differences between different treatments were extremely significant, the yield component traits of T2 were the best, the plot yield was 15.17 kg, showing that Zheng 58 ×CM07 had the strongest special combining ability. The maximum coefficient of variation of bald tip length was 180.47,indicating that bald tip length was controlled by multiple genes. The relationship between the yield and various yield components were ranked as ear length > kernels per row > ear diameter > 100-kernel weight > rows per ear > moisture content > bald tip length, and the correlation between ear length, kernels per row and yield was extremely significant and positive, and the correlation between the bald tip length and yield was significantly negative. The best heterotic pattern of CM07 was P series × CM07, which was significantly correlated compared with other patterns, followed by Reid ×CM07, and Luda × CM07 was the worst. We should pay attention to the effect of bald tip length on yield when we utilize the tropical improved germplasm CM07,which can provide a theoretical basis for the heterotic pattern utilization of CM07 in the Huang-Huai-Hai summer maize area.
作者
张艳
王民乾
孙喜云
郭书亚
Zhang Yan;Wang Minqian;Sun Xiyun;Guo Suya(Shangqiu Academy of Agricultural and Forestry Sciences,Shangqiu Henan 476000)
出处
《中国农学通报》
2020年第21期6-10,共5页
Chinese Agricultural Science Bulletin
基金
河南省现代农业产业技术体系建设专项“河南省玉米产业技术体系——商丘综合试验站”(Z2015-02-02)
河南省博士后研发基地项目
商丘市科技攻关项目“高产多抗适宜机械化生产玉米新品种选育”(153028)
关键词
黄淮海
玉米
产量
种质
杂优模式
Huang-Huai-Hai region
maize
yield
germplasm
heterotic pattern
