关键词: 籼粳稻杂交, 籼粳分化, 生态条件, 选择方法, 分子标记

Abstract: Canada and its protected area system occupy a leading position in the international natural protected community. The perfect protected area system consists of four main levels: national, provincial, regional and local. In addition, there are some systems combining two or more levels. The whole large and order system also link with international systems. Protected area holds a unique position within the field of resource and environment. Protected areas management is a global caurse. This paper analyses and introduces the protected areas system of Canada. We can study and use Canadian advanced experiences for reference in establishing and developing Chinese protected area system.

Key words: indica-japonica hybridization, subspecies differentiation, ecological condition, method selection, molecular marker.