世界上野生稻种有18—20个。其中以普通野生稻分布最广,遍布南亚、东南亚、中国南部、南美等地。染色体组不同的野生稻种,亲缘关系较远,有不可交配性和杂种不孕性。在育种上利用较为困难。虽然普通野生稻与普通栽培稻在生物分类学上属两个种,但是两者有共同的染色体组,相对亲缘关系较近,杂交可孕可育,是育种利用较多的一个野生稻种。一、利用野生稻育成的品种、品系我国对野生稻在育种的利用,早在20年代已经开始。1926—1933年前中山大学农学院丁颖教授选出粗生、俭肥、抗性好、米质佳的晚稻品种 There are 18-20 wild rice species in the world. One of the most widely distributed common wild rice, all over South Asia, Southeast Asia, southern China, South America and other places. Genome different wild rice species, distantly related, there is not mateability and hybrid infertility. Utilization in breeding is more difficult. Although common wild rice and common cultivated rice are two kinds of taxonomic taxonomic, but both have a common genome, relatively close genetic relationship, cross fertility and fertility, breeding more use of a wild rice species. First, the use of wild rice breeding varieties, strains of wild rice in China in breeding use, as early as the 1920s has already begun. 1926 - 1933 years ago, Sun Yat-sen University School of Agriculture Professor Ding Ying selected crude, thrifty, resistant, good quality late rice varieties of rice