Nov 8, 2018

First Report of Recurrent Genomic Selection with Real Data in Popcorn and Genetic Gain Increases

BioRxiv : the Preprint Server for Biology
Ismael Albino SchwantesFernando Rafael Alves Ferreira

Abstract

Recurrent Selection increases the frequencies of favorable alleles for economically important traits, which in the case of popcorn are popping expansion and grain yield. However, is time-consuming, since each selection cycle consists of three stages: progeny development and evaluation, and recombination of the best families. With the Recurrent Genomic Selection use, the time required for each selection cycle can be shortened, as it allows the evaluation and recombination phases to be performed simultaneously, reducing the time needed to complete one selection cycle to only one growing season. In this respect, the objective of this study was to determine the selection accuracy and genetic gains for different selection strategies: PhEN = estimates based exclusively on the phenotypic data of 98 plants; PhEN + GEN = estimates based exclusively on the phenotypic and genotypic data of 98 plants; and GEN = estimates based exclusively on SNP marker genotyping. The following traits were evaluated: 100-grain weight, ear height, grain yield, popping expansion, plant height, and popcorn volume. Field trials were carried out with 98 S1 progenies, at two locations, in an incomplete block design with three replications. The parents of these p...Continue Reading

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Mentioned in this Paper

Biological Markers
Study
Strategy
Genome
Virus Replication
Genome Assembly Sequence
Recombination, Genetic
D-Phen
Evaluation
Sapium sebiferum

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