收集国内外水稻品种466个,在苗期进行酯酶同工酶分析,获得11种酶谱类型。从地理分布来分析,东南亚、印度、我国云南、两广品种酯酶同工酶类型丰富;长江流域、日本品种酯酶同工酶类型较少。从水稻品种的起源、演变分析,普通野生稻酯酶同工酶类型最多,籼稻次之,粳稻的酶谱较少。研究表明,酯酶同工酶与品种的亲缘有着密切关系。 466 rice varieties at home and abroad were collected and esterase isozymes were analyzed at the seedling stage to obtain 11 types of zymogram. From geographical distribution to analyze, Southeast Asia, India, Yunnan and China, Guangdong and Sichuan varieties rich in esterase isozyme types; the Yangtze River, Japan esterase isozyme type less. From the origin of rice varieties, evolution analysis, common wild rice esterase isozyme type most, followed by indica rice japonica rice less. Studies have shown that esterase isozyme and species are closely related.