玉米与玉米近缘种可杂交性研究

Cross-compatibility between Maize and Maize Relatives

本文对玉米与其近缘种及它们的杂交或回交后代的可杂交性进行了研究。结果表明,玉米近缘种的多数材料都能与玉米杂交结实,它们的杂种F1均表现出强的杂种优势和光敏反应;远缘杂交亲和性的母本效应较大,且与物种间遗传距离直接相关。此外,本文还对玉米近缘材料在玉米遗传育种中的应用进行了探讨。

The cross-compatibility （seed set and pollen viability） between maize （inbred and hybrid） and it relatives （including annual and perennis） as well as its introgression hybridization progenies were investigated. The results shown that maize relatives of genus Zea can be directly crossed with maize, and grained F1 seeds. Maize relatives and their interspecies hybrids have strong heterosis photoperiod response. The cross-compatibility of their interspecies hybrid was affected remarkable by different female parent. Furthermore, for the introgression of desirable characters from maize relatives into maize, there are considerable genetic and breeding materials were achieved.