RFLPs were utilized to determine the genetic location and inheritance of quantitative trait loci (QTL) controlling some morphological characters of the panicle in F2 plants from the cross CK60 × PI229828. An RFLP map (111 loci distributed among 10 linkage groups with an average of 12.9 cM between adjacent loci) was used. Interval mapping identified 25 QTL: 6 for panicle length, 3 for number of grain-bearing branches/panicle, 5 for length of grain-bearing branches, 2 for length of the sterile portion of the grain-bearing branch, 6 for peduncle diameter and 3 for 100-grain weight. The parent with the higher phenotypic mean for the trait contributed 64% of the alleles that increased the trait mean. QTL showed no evidence of epistasis. The phenotypic variation for each QTL ranged from 8% to 37%. Multiple models accounted for between 28% (100-grain weight) and 69% (panicle length) of phenotypic variation. Pleiotropy or linked QTL were evident for panicle morphology traits, and significant positive correlation coefficients corresponded to pleiotropic or closely linked QTL with the same direction of additive effects.