培育伴侣品种实现玉米杂交种间优势利用

Partner Hybrid Breeding for Heterosis Utilization of Inter-hybrid in Maize

基于当代优势和花粉直感的特点,宋同明教授提出了普通玉米高油化三利用生产模式并已在生产上取得了成功。为配合这一优质化高产模式的推广,应该强化三利用模式中配套单交种的筛选,选育当代杂种优势和花粉直感效应均高的伴侣型杂交种,形成伴侣型玉米生产系统,从而可以充分利用当代杂种优势和品质性状的花粉直感效应,实现玉米的高产和优质化生产。在此基础上,提出了高油化后的普通玉米直接作为种子进行跨代利用的设想。

Inter-hybrid heterosis is an important part of maize heterosis. Based on the obvious xenia effects of high oil and heterosis, a technique called TEU(three-effect-utilization) was developed to pyramid the cytoplasm male sterile effect, heterosis and xenia of oil content into a production system, which has patented in China. The system has been used in practical production successfully. For better use of TEU, the author suggested that a high efficient partner-hybrid production system should be developed by screening and matching normal hybrid and high oil pollinator based on their heterosis, xenia and other traits. Further more, high-oilized normal corn could also be used as seed in high oil corn production.