高粱品种间杂交,其后代,特别是 F_1代具有很强的杂种优势。利用这种优势是提高高粱单位面积产量的一个重要途径。雄性不育高粱的发现和选育成功,为利用杂种优势提供了可能性。最近几年,我国有关单位对这项工作十分重视,各地相继选育出不少雄性不育系和杂交种,并在生产上开始利用。在杂交种的选育和制种过程中,都要遇到授粉问题,而授粉又与柱头生活力有密切关系。因此了解雄 Sorghum hybrids between varieties, their offspring, especially F1 generation has a strong heterosis. Taking advantage of this advantage is an important way to increase yield per unit area of ​​sorghum. The success of male sterile sorghum discovery and breeding has provided the possibility of using heterosis. In recent years, relevant units in our country have attached great importance to this work. Many male sterile lines and hybrids have been bred in various places and started to be used in production. In hybrid breeding and seed production process, pollination problems are encountered, and pollination and stigma vitality are closely related. So understand the male