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Reciprocal recurrent selection based on genetic complementation: An efficient way to build heterosis in diploids due to directional dominance

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Title Reciprocal recurrent selection based on genetic complementation: An efficient way to build heterosis in diploids due to directional dominance
 
Creator Covarrubias‐Pazaran, Giovanny
Werner, Christian R.
Gemenet, Dorcus C.
 
Subject plant breeding
accumulation
innovation
exploitation
heterosis
food security
Zea mays
viability
costs
 
Description Depending 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.
 
Date 2023-06-02
2023-11-03T11:24:56Z
2023-11-03T11:24:56Z
 
Type Journal Article
 
Identifier Covarrubias‐Pazaran, Giovanny, Christian Werner, and Dorcus Gemenet. "Reciprocal recurrent selection based on genetic complementation: An efficient way to build heterosis in diploids due to directional dominance." Crop Science (2023).
0011-183X
https://hdl.handle.net/10568/132702
https://acsess.onlinelibrary.wiley.com/doi/full/10.1002/csc2.21018
https://doi.org/10.1002/csc2.21018
 
Language en
 
Rights CC-BY-4.0
Open Access
 
Format 2205-2219
application/pdf
 
Publisher Wiley
 
Source Crop Science