Identification of inbreeds as donors of favorable alleles for grain yield in the elite hybrid ZPE25-10-1 X B84 of maize
2000
Vračarević Maja | Damjanović Jelena | Prodanović Slaven
The aim of this study was to determine which of six inbreeds that were investigated could be the donor of the favorable alleles for grain yield and its components ear diameter and number of kernels in a row. The trial including the F1 hybrid progeny and the inbreeds investigated was set in 1998 in RCB design at four locations: Zemun Polje, Srbobran, Pančevo and Inđija, in four replications. The modified method after Dudley (1987) was used to establish the donors of favorable alleles. All inbreeds expressed positive values of the UG parameter and the L545-93 inbred line was chosen to improve the grain yield of the ZPE25-10-1 x B84 elite hybrid on the basis of the largest value of its UG parameter (0.95*). Positive UG values were determined for other investigated traits, e. g. the ear diameter (0.26*) and the number of grains in a row (2.54*), also. On the basis of the relative relatedness of the L545-93 inbred and the parents of the elite hybrid it was concluded that the parallel improvement of the ear diameter and the kernel number in a row could be achieved by backcrossing the ZPE25-10-1 x L545-93 F1 hybrid progeny and the donor line. The improvement of the grain yield of the elite hybrid should be carried out by backcrossing the B84 x L545-93 F1 progeny and the B84 parental inbred. .
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