It is difficulty to select and breed apomictic germplasm among diploid rices at present, but it has become a hotspot to select and breed apomictic germplasm among polyploid rices.

• 目前,在二倍体水平上选育水稻无融和生殖种质的难度较大,而在多倍体水平筛选水稻无融和生殖新种质已成为水稻无融和生殖研究新的生长点。