Abstract
The phylogenetic relationship of sugarcane (Saccharum officinarum) with three other related genera viz.,Erianthus, Zea andSorghum and their 12 intergeneric hybrids was studied using 250 RAPD markers.S.officinarum andErianthus, though belonging to the same sub tribe, showed strong molecular differentiation between them. The phenogram based on these markers showed thatErianthus andSorghum are almost equidistantly placed fromSaccharum officinarum while maize was found to be the most outlying genus in relation toS.officinarum. The 12 hybrids of sugarcane (S. officinarum) withErianthus spp.,Sorghum bicolor andZea mays were found to be closer to theirSaccharum parent than to the respective related genera. This is possibly because of the higher chromosome contribution ofSaccharum compared to the related genera in the hybrids.
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