Genetic Variability and Relationships among Seventeen Trichoderma Isolates to Control Dry Root Rot Disease Using RAPD Markers

a All India Co-ordinated Research Project on Tropical Fruits (Citrus), Citrus Research Station, Acharya N. G. Ranga Agricultural University, Tirupati 517502, Andhra Pradesh, India. E-mail: gopalkurub@yahoo.co.in b Department of Biotechnology, Sri Vidya Niketan College of Engineering and Technology, Tirupati, Andhra Pradesh, India c Department of Microbiology, J. J. College of Arts and Science, Pudukkottai 622 404, Tamil Nadu, India