A field experiment was conducted during kharif, 2010 and rabi, 2010-11 at Rice section, ARI, Rajendra nagar, involving 7 parents and 7 F1 hybrids to study the heterosis in aromatic rice for yield and quality characters i.e., kernel length, kernel breadth and kernel length / breadth ratio. Five crosses showed significant negative heterosis over mid parent and 6 crosses exhibited significant negative heterosis over better parent for days to 50% flowering. For productive tillers per plant 2 crosses recorded significant positive heterosis and one cross showed significant negative heterosis over better parent. Six crosses showed significant positive heterosis for grain yield both over mid parent and better parent. Five crosses registered significant positive heterosis for kernel length over mid-parent with highest value of 8.21(PUSA1121 X BM71) and none of the crosses was superior over better parental values. For kernel breadth, only one cross i.e., RNR2354 × MTU1081 (-4.27) showed significant negative heterosis. However, five crosses recorded non-significant negative heterosis and six crosses with significant negative heterosis over mid and better parents respectively for kernel length/ breadth ratio.
