plant tissue culture & genetics

2.Biodiversity and Evolution of Plants

 Humankind  has affected our planet in many ways. In the past few centuries the changes in society and the "Biodiversity" is the full complexity and variety of life, at all scales, from genetic diversity, up to species and even ecosystem diversity. So, we use the term "biodiversity conservation" to refer to attempts to conserve and any parts of this natural diversity. Plant diversity is a major plant of total biodiversity - just think of the richness of tropical rain forests .it forms the basis of all food webs, and underpins the functioning of all ecosystems. So, plant conservation is an essential component of efforts for biodiversity conservation. As plants are at risk of extinction, in all parts of the world, their conservation is a priority. Plants command the common world and are the wellspring of vitality for the larger part of other earthbound living beings. Current plants slid from a genealogical plant that lived in an amphibian situation. We will study the evolutionary history of the plant kingdom to better understand the selective forces that have shaped plants' development and led to the diversity of forms in existence today. Biodiversity during the course of evolution, plant domestication and plant breeding. It shows than man has had a strong influence on the progressive decrease of biodiversity, unconscious at first and deliberate in modern times.