Inheritance of traits of silage maize hybrids
2007
Secanski, M., Institut za kukuruz Zemun Polje, Beograd - Zemun (Serbia) | Zivanovic, T., Poljoprivredni fakultet, Beograd - Zemun (Serbia) | Vasiljevic, S., Institut za ratarstvo i povrtarstvo, Novi Sad (Serbia)
A set of six maize inbred lines and their diallel hybrids of F1 generation for grain yield, yield components, morphological traits and dry matter yield of both whole plant and ear were investigated in this study. A comparative trial with inbreds and hybrids was set at Zemun Polje, Serbia, during 2000 and 2001. The analysis of genetic variance components and regression analysis were done after Jinks, 1954, Hayman, 1954, Mather and Jinks, 1971. Dominant components (H1 and H2) of genetic variance were greater than additive ones (D) for all studied traits except kernel row number. Results on the Vr/Wr regression analysis point out to super-dominance in inheritance of all traits, but kernel row number, for which partial dominance was estimated. The high broad sense heritability was registered for all traits, indicating a greater significance of dominant genes for their experession. As expect, the highest narrow sense heritability was detected for kernel row number, due to highr frequency of additive genes. The greatest estimate of heterosis was determined for grain yield (155.551%) and ear dry matter yield (157.80%) in the hybrid ZPLB 405 x ZPLB 406. Negative estimates of heterosis were determined in the hybrid ZPLB 402 x ZPLB 403 for all traits, except kernel row number, ear and plant height.
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