Experimental study demonstrates in vitro fertilisation-based autopolyploidisation across four parents in rice, indicating a viable method combining multi-parent hybridisation with polyploidy.
Conventional breeding approaches aimed at crop improvement have been based on hybridisation through crosses between two parental lines or autopolyploidisation through genome duplication in a single parental line. These restrict the number and combination of parental genomes that can be combined in a single generation and are rarely co-applicable. This study demonstrated that in vitro fertilisation (IVF)-based autopolyploidisation using multiple parents is a viable approach that can combine the advantages of hybridisation and polyploidy in rice.
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Sakoda et al. (2026) studied this question.
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