The effect of yield components to grain yield in different maize recurrent selection cycles | Uticaj komponenti prinosa na prinos zrna u razlicitim ciklusima rekurentne selekcije kukuruza
2006
Deletic, N., Poljoprivredni fakultet, Lesak (Serbia) | Stojkovic, S., Poljoprivredni fakultet, Lesak (Serbia) | Djuric, V., Poljoprivredni fakultet, Lesak (Serbia)
A set of 31 SSD lines from ZP-Syn-1 Co and 37 from ZP-Syn-1 C3 maize populations was studied in this paper. After line selection and seed multiplication in 2000, the trials were carried out in 2001-2002, at Krusevac and Zemun Polje (Serbia), in RCB design. After additive correlation coefficients being calculated, they have been used to calculate path coefficients and multiple determination coefficients. Path coefficients, based on additive correlation coefficients, in zero cycle lines were significant only for direct effects of grain row number (0.409**) and number of grains per row (0.446**). In lines derived from the third cycle, additive path coefficients were significant for direct effects of ear height (0.318**), number of grains per row (0.843**), and 1000 grain mass (0.526**). Direct effects of the other traits, as well as, the all indirect effects, were not significant in both studied cycles. There was not any significant effect of the studied traits on grain yield. Multiple determination coefficients were significant for the most of independent variable combinations in both cycles. A great number of only few trait combinations expressed almost equal effect as the one of the all seven studied traits.
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