本文从光温反应、株高等位基因、细胞遗传和酯酶同工酶四方面对东乡野生稻的遗传异质性作了分析。试验表明,东乡野生稻与栽培稻存在着交配障碍、株高不等位、减数分裂期染色体行为明显异常、酯酶同工酶无籼、粳特征带而特具5A带,表明差异很明显。这是东乡野生稻在进化过程中与栽培稻产生遗传分化的结果。 In this paper, we analyzed the genetic heterogeneity of Dongxiang wild rice from four aspects: light and temperature, alleles of plant height, cytogenetics and esterase isoenzyme. The results showed that there was mating disorder between wild rice and cultivated rice in Dongxiang, the plant height was not the same, the behavior of chromosome at meiosis was obviously abnormal, and the esterase isozyme had no characteristic of the indica and japonica. The 5A band showed that the difference was obvious . This is the result of genetic differentiation of Dongxiang wild rice and cultivated rice during the evolutionary process.