ignou stands for indira gandhi national open university. it is a reconized university in india and phd degree from ignou is valid. admission process is you need to apply online. a entrance exam will be held by the university which is similar to ugc net or csir net exam type. ignou offers phd course in following subjects.
biochemistry, chemistry, commerce, english, fine arts, gender and development studies, environmental science, geology, journalism and mass communication, music, rural science, woman studies, statistics, social work.