The evaluation of donors of favourable alleles for the improvement of F1 maize hybrids
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The basic aim of maize breeding programs is the development of new hybrids that will exceed the existing commercial hybrids. The purpose of this study was to estimate which inbreds derived from the BSSS and BSCB1 populations had the highest relative values of favourable alleles for the improvement of the number of kernels per row in an elite maize hybrid. Inbreds B73 (C5), B97 (C9) and B99 (C10) had the highest values of favourable alleles µG* for the improvement of the number of kernels per row. The inbred line B73 (C5) originating from the synthetic population BSSS had a significant and positive difference µG*-(µD* or µF*), hence in the breeding process, the F1 generation should be crossed to an inbred donor and then self-pollinated to develop an improved inbred line. Inbred lines B97 (C9), B99 (C10) and B84 (C7) had high values of µG* but did not have high differences µG*-(µD* or µF*), not significantly higher than null. Ranking of inbreds as donors of favourab...le alleles over four applied parameters (µG*, UBND, PTC and NI) shows congruence. The best ranked inbred line B73 (C5) was the best over all four parameters, while remaining inbreds expressed identical ranking confirming high and significant rank correlations.
Keywords:inbred lines / maize / donors / hybrid / alleles / rank correlations
Source:6. Congress of the Serbian genetic society, 13-17. October 2019., Vrnjačka Banja - Book of abstracts, 2019, 222-222
- Belgrade : Serbian Genetic Society