Asian Journal of Plant Sciences1682-39741812-5697Asian Network for Scientific Information10.3923/ajps.2004.11.13Eurystylus oldi (Poppius) in Sorghum (Sorghumbicolor (L.) Moench)]]>F.A. Showemimo 1200431Genetic analysis were carried out to determine heterotic effects, gene action and inheritance of resistance to head bug, Eurystylus oldi Poppius in four sorghum crosses. Resistance was found dominant over susceptibility. Significant negative heterotic effect above mid-parent and better parent for grain damage rating was detected for all crosses. Dominance gene action is more important for the three resistance traits: grain damage rating, floaters percentage and germination percentage. Inheritance to E. oldi is conditioned by one dominant gene in two F2 populations, while resistance in the remaining two F2 populations is controlled by two dominant genes and in part by genes at two or more loci.]]>Sharma, H.C., Y.O. Doumbia, M. Haidara, J.F. Scheuring, K.V. Ramaiah and N.F. Beninati,1994immaculatus Odh in West Africa.]]>153948Showemimo, F.A., S.O. Alabi, P.E. Olorunju and O. Ajayi,2001Sorghum bicolor (L.) Moench) for resistance to sorghum head bug (Eurystylus oldi Poppius) in Nigeria.]]>173544Sharma, H.C., Y.O. Doumbia and N.Y. Diorisso,1992Eurystylus immaculatus Odh) in West Africa.]]>13417427Kempthorne, O.,1957Grafius, J.E., W.L. Nelson and V.A. Dirks,195244253257Agrawal, B.L. and C.V. Abraham,19851985pp: 371383Showemimo, F.A. and S.O. Alabi,2001Eurystylus oldi Poppius).]]>15763Showemimo, F.A., C.A. Echekwu and S.O. Alabi,2001Eurystylus oldi (Poppius) using insect resistance index approach (IRI).]]>13237Ratnadass, A. and O. Ajayi,19951995pp: 29-38pp: 29-38Sharma, H.C.,19971997pp: 65-71pp: 65-71