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(Reference retrieved automatically from Web of Science through information on FAPESP grant and its corresponding number as mentioned in the publication by the authors.)

Accuracy of genomic selection to predict maize single-crosses obtained through different mating designs

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Author(s):
Fristche-Neto, Roberto [1] ; Akdemir, Deniz [2] ; Jannink, Jean-Luc [3]
Total Authors: 3
Affiliation:
[1] Univ Sao Paulo, Dept Genet, Luiz de Queiroz Agr Coll, Sao Paulo - Brazil
[2] Cornell Univ, Ithaca, NY - USA
[3] Cornell Univ, Dept Plant Breeding & Genet, Ithaca, NY - USA
Total Affiliations: 3
Document type: Journal article
Source: THEORETICAL AND APPLIED GENETICS; v. 131, n. 5, p. 1153-1162, MAY 2018.
Web of Science Citations: 10
Abstract

Testcross is the worst mating design to use as a training set to predict maize single-crosses that would be obtained through full diallel or North Carolina design II. Even though many papers have been published about genomic prediction (GP) in maize, the best mating design to build the training population has not been defined yet. Such design must maximize the accuracy given constraints on costs and on the logistics of the crosses to be made. Hence, the aims of this work were: (1) empirically evaluate the effect of the mating designs, used as training set, on genomic selection to predict maize single-crosses obtained through full diallel and North Carolina design II, (2) and identify the possibility of reducing the number of crosses and parents to compose these training sets. Our results suggest that testcross is the worst mating design to use as a training set to predict maize single-crosses that would be obtained through full diallel or North Carolina design II. Moreover, North Carolina design II is the best training set to predict hybrids taken from full diallel. However, hybrids from full diallel and North Carolina design II can be well predicted using optimized training sets, which also allow reducing the total number of crosses to be made. Nevertheless, the number of parents and the crosses per parent in the training sets should be maximized. (AU)

FAPESP's process: 15/26251-5 - ACCURACY OF GENOMIC SELECTION TO PREDICT TROPICAL MAIZE SINGLE-CROSSES OBTAINED BY DIFFERENT MATING DESIGNS
Grantee:Roberto Fritsche Neto
Support Opportunities: Scholarships abroad - Research
FAPESP's process: 13/24135-2 - Genome-Wide Association Studies for nitrogen use efficiency and its components in tropical maize lines
Grantee:Roberto Fritsche Neto
Support Opportunities: Regular Research Grants