TABLE 1.

Impact of each brick on the parameters of the breeder’s equation.

Brick/parameter of the breeder’s equation	i	r	σG	1/T
(A) Add genotyping to increase selection accuracy	(+)	+		(+)
(B) Replace all or part of the phenotyping effort with genotyping	+			+
(C) Improve the choice of parents to optimize crossbreeding or preserve genetic diversity		+	+

i, intensity of selection; r, accuracy of selection; σ_G, genetic standard deviation; T, duration of the breeding cycle. Impacts are denoted by “+” for direct impact and “(+)” for indirect impact.