Affiliation:
1. Excellence in Breeding Platform Consultative Group of International Agricultural Research Texcoco Mexico
2. International Maize and Wheat Improvement Center (CIMMYT) Texcoco Mexico
Abstract
AbstractDepending on the trait architecture and reproduction system, selection strategies in plant breeding focus on the accumulation of additive, dominance effects, or both. Innovation in the exploitation of dominance‐effect‐based heterosis has been limited since the proposal of general combining ability (GCA)‐based approaches. We propose the use of a new surrogate of genetic complementation between genetic pools to increase accumulation of dominance effects and heterosis. We simulated breeding programs to show how reciprocal recurrent selection (RRS) by genetic complementation would build the dominance‐based heterosis cheaper than GCA‐based approaches and used real phenotypic data from hybrid maize (Zea mays) to demonstrate the underlying concepts. We found RRS by genetic complementation to be an attractive and viable strategy to exploit dominance, build de novo heterotic pools, and enhance the current GCA‐based approaches. If demonstrated in practice, we hypothesized that this approach would lower the cost of hybrid breeding drastically and contribute to food security.
Funder
Bill and Melinda Gates Foundation
Subject
Agronomy and Crop Science
Reference53 articles.
1. Genetic drift and the loss of alleles versus heterozygosity
2. Relationship between single-cross performance and molecular marker heterozygosity
3. Role of chromosome blocks in heterosis and estimates of dominance and overdominance;Bingham E. T.;Concepts and Breeding of Heterosis in Crop Plants,1998
4. Heterosis
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