Analysis of heterosis components and prediction of hybrid means based on intergroup topcrosses in maize
Diallel designs are widely used in plant breeding to select parents and to study trait inheritance. The present work aimed to present a method to evaluate two divergent groups of parents, in which one group is used as a tester of the contrasting group. Each parent is crossed with a balanced mixture...
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| Veröffentlicht in: | Crop breeding and applied biotechnology 2022, Vol.22 (1) |
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| creator | Moreira Júnior, Weber Neves Costa, Nayana Valéria Chaves, Lázaro José |
| description | Diallel designs are widely used in plant breeding to select parents and to study trait inheritance. The present work aimed to present a method to evaluate two divergent groups of parents, in which one group is used as a tester of the contrasting group. Each parent is crossed with a balanced mixture of seeds from the parents of the other group, and the parents and topcrosses are experimentally evaluated. Two groups of ten inbred maize lines were used to obtain intergroup topcrosses and biparental crosses in a diallel scheme. The data were subjected to analysis of variance and parameter estimation using the two models. The results showed the reliability of the method for the evaluation of lines and prediction of means of hybrid populations and can be recommended when the number of parents to be evaluated is large, making it difficult to evaluate biparental crosses in a diallel scheme. |
| doi_str_mv | 10.1590/1984-70332022v22n1a09 |
| format | Article |
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| identifier | ISSN: 1518-7853 |
| ispartof | Crop breeding and applied biotechnology, 2022, Vol.22 (1) |
| issn | 1518-7853 1984-7033 1984-7033 |
| language | eng |
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| source | EZB-FREE-00999 freely available EZB journals |
| subjects | AGRONOMY BIOTECHNOLOGY & APPLIED MICROBIOLOGY Corn Heterosis Inbreeding Parameter estimation Plant breeding Seeds Variance analysis |
| title | Analysis of heterosis components and prediction of hybrid means based on intergroup topcrosses in maize |
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