Table 1.

Comparison of different plant breeding strategies.

Breeding technologies	Unique features	Advantages	Disadvantages
Hybridization	Integrate genes from different parents	Affecting a large number of genes	Random and laborious in subsequent selections
Mutagenesis	Randomly create new alleles	Creating new alleles	Random and unpredictable
Transgenics	Add genes	Targeted and predictable	Affecting a small number of genes
Genome editing	Make specific changes to DNA	Targeted and predictable	Affecting a small number of genes
De novo domestication	Set new genetic backgrounds	Utilization of genes from wild plants	Requiring genome editing system in wild species