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生产实践证明,小麦的杂种优势利用是现阶段提高小麦产量的一条重要途径。小麦是自花授粉作物,播量大,繁殖系数较低,因此要使杂交小麦迅速而大面积地推广种植,除了要选育强优势组合外,还需要与之相应的制种栽培技术,生产出大量而经济的杂交种子。目前可用于生产小麦杂交种的途径主要有两种,即细胞质雄性不育系统和化学杂交剂系统。在这里将主要介绍细胞质雄性不育系统。
Production practice has proved that the utilization of wheat heterosis is an important way to improve wheat yield at this stage. Wheat is a self-pollinating crop with large seeding rate and low multiplication coefficient. Therefore, in order to popularize the hybrid wheat rapidly and extensively, in addition to the selection of a strong combination of advantages, the corresponding cultivation and cultivation techniques are also required to produce A large number of economic hybrid seeds. At present, there are mainly two ways to produce wheat hybrids, that is, the cytoplasmic male sterility system and the chemical hybridization system. Here will be mainly introduced cytoplasmic male sterility system.