Gene action and heterosis with particular reference to single cross hybrids of maize (Zea mays L.)
2001
Alamnie Atanaw (Ethiopian Agricultural Research Organization, Addis Abeba (Ethiopia))
The study was conducted to assess the magnitude of heterosis, combining ability and nature of gene action with respect to yield and its components in maize. A line x tester set was obtained by crossing thirty-four lines with their parents and five commercial checks were planted in 12 x 12 simple lattice design in Kharif, 2000 at agricultural Research Station Arabhavi. Hybrids exhibited significant variability for fourteen characters studied. On the other hand, the non-additive gene action was predominant for grain yield per plant, grain yield per plot, reaction to TLB disease, plant height, ear height, daysto 50 per cent brown husk maturity, ear length, number of kernel rows per cob and nuber of kernels per row.
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