36份糯玉米骨干系类群划分及杂优模式预估

Grouping of 36 Backbone Waxy Maize Inbred Lines and Prediction of Heterosis Model

为进一步明确不同糯玉米自交系遗传基础及亲缘关系并预估杂优模式,本研究选取36份糯玉米骨干自交系,采用基于多重PCR技术的1K SNP进行基因分型,结果表明:36份糯玉米骨干系被划分为4个类群(A、B、C、D),通过建立以垦粘1号等品种为参照的模拟双亲模型,预估了WX8×Nuo2、WX19×Nuo1等多种杂优模式,为糯玉米育种提供了方向。

To further clarify the genetic basis and phylogenetic relationships of different waxy maize inbred linesand to predict heterosis models, this study selected 36 waxy maize backbone inbred lines and genotyped by 1 K SNPbased on multiplex PCR technology. The results showed that 36 waxy maize were divided into 4 groups(A, B, C, D).By establishing a simulated parent model based on Kennian 1 and other varieties, better hybrid models such asWX8 × Nuo2, WX19 × Nuo1 are estimated to provide clear direction for waxy maize breeding practice.