author(s)
L Rajesh Chowdary, M Bheemanna, AC Hosamani, A Prabhuraj, MK Naik and JM Nidagundi

abstract
Genomic DNA of 16 different populations of P. gossypiella from South India were analysed for studying genetic variation. Amplicons of about 800 bp of mitochondrial COI gene was used and populations of P. gossypiella from various geographic locations were established as two distinct groups. Genetic relationships between the populations were evaluated by generating matrix and phonetic dendrogram was generated (by UPGMA method) and in PCA, first two components accounted for 100% of the similarity and the populations were differentiated into different classes based on band sharing data. The highest genetic variation (0.058) was found between populations of Beed and Madhira followed by Raichur and Guntur (0.055); the genetic variation was nil between the populations viz., Adilabad and Anantapur, Aurangabad-2 and Aurangabad-1, Coimbatore & Aurangabad-1, Coimbatore & Aurangabad-2, Parbhani and B’gudi, Siruguppa and Aurnagabad-1, Siruguppa and Aurangabad-2, Siruguppa and Coimbatore, Siruguppa and Haveri, Siruguppa and Madhira populations.