Asian Journal of Crop Science1994-78792077-2041Asian Network for Scientific Information10.3923/ajcs.2013.153.166Gossypium barbadense L.)]]>EL-RefaeyR.A. Abd El-RazekU.A. 2201352The objective of the present investigation was to estimate genetic variance
components and type of gene action controlling yield, its components and quality
characteristics of some cotton crosses, by means of the six populations (P1,
P2, F1, F2, BC1 and BC2)
of the four cotton crosses. Results revealed that the estimated mean effects
(m) were highly significant for all traits in all crosses, indicated that these
traits were quantitatively inherited. Additive and dominant gene effects were
highly significant for No. of bolls/plant, boll weight in the fourth cross,
2.5% span length in the second cross, fiber fineness in the first and fourth
crosses, with lager of dominance effects in magnitude than additive ones. Dominance,
additivexdominance and dominancexdominance were at least significant for No.
of bolls/plant in the first cross, seed and lint cotton yields in the first
and second crosses, boll weight in the fourth cross, 2.5% span length and fiber
fineness in the first cross and fiber strength in the second cross, indicated
that these traits were greatly affected by dominance and their non-allelic interactions.
Narrow-sense heritability and genetic advance were low in most cases due to
the opposite directions of dominance and dominancexdominance effects resulted
in lower overall dominance variance. It could be concluded that heterosis over
mid and better parent were highly significant in all crosses for No. of bolls/plant,
seed and lint cotton yields/plant with low inbreeding depression.]]>Abd El-Haleem, S.H.M., E.M.R. Metwali and A.M.M. Al-Felaly,2010Gossypium barbadense L.) varieties.]]>6615621Abdalla, A.M.A.,20071 and F2.]]>11793811Abdul-Hafeez, A.G., M.A. El-Hity, H.A. El-Harony and M.A. Abel-Salam,2007Gossypium barbadense L.).]]>11669680Abo El-Zahab, A.A. and M.M.M. Amein,20002000pp: 305329Basbag, S., R. Ekinci and O. Gencer,200814143147Bhardwaj, R.P. and C.J. Kapoor,1998Gossypium hirsutum L.).]]>1998pp: 214216Burton, G.W.,19521952pp: 277283Deshpande, L.A. and K.S. Baig,2003Gossypium hirsutum L.).]]>312834Dhillon, S.S. and T.H. Singh,1980Gossypium hirsutum L.).]]>94539543Dong, J., F. Wu, Z. Jin and Y. Huang,20061511777El-Saeidy, E., V. Scholz and J. Hahn,20032003pp: 2732El-Beially, I.E. and G.I.A. Mohamed,2008Gossypium barbadense L.).]]>45164El-Disouqi, A.E. and A.M. Ziena,200112634013409Karademir, E. and O. Gencer,2010Gossypium hirsutum L.) obtained by half diallel mating design.]]>38222227Esmail, R.M.,2007320752080Esmail, R.M., F.A. Hendawy, M.S. Rady and A.M. Hamid,1999213751Gamble, E.E.,1962Zea mays L.): I. Separation and relative importance of gene effects for yield.]]>42339348Hendawy, F.A., H.A. Dawwam, R.M. Esmail and E.H. Mahros,20092009pp: 35Jagtap, D.R.,198656833840Jinks, J.L. and R.M. Jones,195843223234Johnson, H.W., H.F. Robinson and R.E. Comstock,195547314318Kalsy, H.S. and H.R. Garg,1988Gossypium hirsutum L.).]]>58397399Lin, Y. and L.Y. Zhao,198815401408Mansur, L.M., A.L. Carriquiry and A.P. Rao-Arelli,19933312491253Mather, S.K.,1949McCarty, Jr. J.C., J.N. Jenkins and J. Wu,20044412311235Mert, M., O. Gencer, Y. Akscan and K. Boyac,2003Gossypium hirsutum L.).]]>86267Miller, P.A., J.C. Wiliams, H.F. Robinson and R.E. Comstock,195850126131Murtaza, N.,20056255262Pathak, R.S.,1975Gosspium hirsutum L.).]]>46129133Rahman, S.U. and T.A. Malik,200810209212Singh, P. and S.S. Narayanan,19931st Edn.,Pages: 182Pages: 182Singh, T.H., M.A. Quader and G.S. Chahal,198338319322Tyagi, A.P.,1988Gossypium hirsutum L.).]]>227580Warner, J.N.,195244427430Warnock, D.F., D.W. Davis and G.R. Gengera,19983814511457