Maize (Zea mays L.) serves as model plant for heterosis research and is the crop where hybrid breeding was pioneered. We analyzed genomic and phenotypic data of 1254 hybrids of a typical maize hybrid breeding program based on the important Dent × Flint heterotic pattern. Our main objectives were to investigate genome properties of the parental lines (e.g., allele frequencies, linkage disequilib...

Abstract Independent chromosome segments for a population with Ne effective size and L genome length can be approximately defined as 4NeL non-overlapping haplotypes of L/2 derived from any animals. The number independent (Me) approximated 4NeL. genetic selection genomic relationship matrix (GRM) using such approaches that GRM the SNP markers. objective this study was to investigate statistical ...

This study investigated the accuracy of imputation from LD (7K) to 54K panel and compared accuracy of genomic prediction with or without the X chromosome information, based on data of Nordic Holstein bulls. Beagle and Findhap were used for imputation. Averaged over two imputation datasets, the allele correct rates of imputation using Findhap were 98.2% for autosomal markers, 89.7% for markers o...

Genomic selection (GS) is a powerful tool for improving genetic gain in maize breeding. However, its routine application large-scale breeding pipelines limited by the high cost of genotyping platforms. Although sequencing-based and array-based platforms have been used GS, few studies compared prediction performance among In this study, we evaluated predictabilities four agronomic traits 305 hyb...

The aim of this study was to evaluate different methods used in genomic selection, and to verify those that select a higher proportion of individuals with superior genotypes. Thus, F2 populations of different sizes were simulated (100, 200, 500, and 1000 individuals) with 10 replications each. These consisted of 10 linkage groups (LG) of 100 cM each, containing 100 equally spaced markers per li...

Nelore is the most economically important cattle breed in Brazil, and the use of genetically improved animals has contributed to increased beef production efficiency. The Brazilian beef feedlot industry has grown considerably in the last decade, so the selection of animals with higher growth rates on feedlot has become quite important. Genomic selection (GS) could be used to reduce generation i...

Reproductive traits are economically important for beef cattle production; however, these traits are still a bottleneck in indicine cattle since these animals typically reach puberty at older ages when compared to taurine breeds. In addition, reproductive traits are complex phenotypes, i.e., they are controlled by both the environment and many small-effect genes involved in different pathways. ...