Read this essay to learn about the process of megasporogenesis and megagametogenesis in plants, explained with the help of suitable diagrams. Development of Megaspore Mother Cell: The ovule develops as multicellular placental outgrowth including the epidermal and a number of hypodermal cells. With further development, this gives rise to nucellus and one or two integuments from its basal region. In [...]
The following points highlight the three methods to introduce alien DNA into host cell. The methods are:- 1. Microinjection 2. Electroporation 3. Shot-Gun/Gene Gun Method of DNA Introduction. Method # 1. Microinjection: DNA can also be stably introduced into tissue culture cells by its direct microinjection into the nuclei of the cells, using a glass micropipette that has been drawn [...]
The following points highlight the seven main methods to introduce the better characters in plants. The methods are: 1.Tissue Culture Technique 2.Cell Fusion 3. Somatic Cell Hybridization or Cytoplast or Cybrid 4. Somaclonal Variations 5. Organ Culture Technique 6. Embryo Rescue 7. Genetic Engineering. Method # 1. Tissue Culture Technique: Plant tissue culture technique is used to select somaclones that [...]