据《世界科技译报》报道，日本在人的染色体破译方面落后于欧美国家，但在植物尤其是水稻染色体破译方面却保持着领先地位。现在，日本正在力求使这一地位不受动摇。 水稻共有１２对染色体，约４．３亿个碱基对。日本是以稻米为主食的国家，为了培育新稻种，从１９９１年起实施 According to the report of “World Science and Technology Translation,” Japan lags behind the countries in Europe and the United States in decoding human chromosomes. However, Japan has maintained its leading position in deciphering plants and rice chromosomes in particular. Now, Japan is trying to keep this position from shaken. There are 12 pairs of chromosomes in rice, about 430 million base pairs. Japan is a country where rice is the staple food. Since 1991, it has been implemented to cultivate new rice varieties