?url_ver=Z39.88-2004&rft_id=10.1016%2Fj.fcr.2013.03.001&rft_val_fmt=info%3Aofi%2Ffmt%3Akev%3Amtx%3Ajournal&rft.aufirst=A&rft.au=Ashok+Kumar%2C+A&rft.aulast=Ashok+Kumar&rft.atitle=Gene+effects+and+heterosis+for+grain+iron+and+zinc+concentration+in+sorghum+%5BSorghum+bicolor+(L.)+Moench%5D&rft.title=Field+Crops+Research&rft.issn=0378-4290&rft.date=2013&rft.volume=146&rft.pages=86-95&rft.genre=article