长日照条件下大刍草与温带玉米自交系远缘杂交效果研究

Study on Distant Hybridization Between New Teosinte Germplasm and Temperate Maize Inbred Lines in Long Sunlight Condition

采用保护地和大田种植两种栽培模式,以大刍草新种质鲁牧2号为父本、11个温带玉米自交系为母本,对其在长日照条件下(山东地区)的远缘杂交效果进行了比较研究。结果表明:利用大刍草新种质鲁牧2号作父本,通过错期管理,在山东地区保护地栽培和大田栽培均可实现其与普通玉米自交系的远缘杂交,获得杂交种。两种栽培模式比较,大田栽培条件下玉米杂交种产量显著高于保护地栽培,且操作简便,节省投入,有效降低了制种成本。

This study was to compare the effect of distant hybridization between a newteosinte Germplasm named Lumu No.2 and 11 temperate maize inbred lines on the mode of dependency and field in long sunlight condition (Shandong area). The result showed that it could gain hybrid in dependency and field in Shandong area by changing time managing and using Lumu No.2 for father plant. Compared field mode with dependency mode, hybrid yield of field was marked beyond of dependency, and operated easy, which could reduce se...