Tamil Nadu state was explored for sorghum germplasm and 150 accessions were collected from 19 districts. The maximum number of accessions was collected from Coimbatore (21) followed by Karur (19) and Thoothukudi (15). Twenty five different landraces were collected including irungu cholam, senjolam, vellai cholam, periya manjal cholam, manjal cholam, pei cholam, nattu cholam, senkaton cholam, karareddu cholam, thalaivirchchan cholam and makkatai cholam. These landraces belong to five basic races and three intermediate races with the highest diversity (0.96–2.00) in Tiruvannamalai and Namakkal districts. The landraces richness map indicated that Theni, Dindigul and Southern Coimbatore districts had the highest diversity with a representation of 10-11 landraces. Present study was undertaken to investigate morphological grouping of the races and racial richness, diversity and distribution maps of sorghum collections of Tamil Nadu with the help of DIVA-GIS.
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[M Elangovan, K Ganesamurthy, K Sankarapandian and P Kiran Babu (2015); GIS mapping of sorghum landraces collected from Tamil Nadu, India Int. J. of Adv. Res. 3 (4). 0] (ISSN 2320-5407). www.journalijar.com
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