The problem of climate change and its impact on natural resources has received much discussion of late. This problem is real. The obvious result of rising global temperatures was reduction in vegetation size & biodiversity, when it affected on the dynamic status of some wild plants. When the vegetation could not tolerate, one can say that; its fate is completely disappear. Once the endangered plant species is subjected to such stress, its dynamics is affected based on its degree of fitness. My objective is studying the population dynamics of rare species and determining priorities to conserve it, in addition to study the fitness characters on the gene level as a tool to solve such probl