Emerging Paradigms in Genomics-Based Crop Improvement

Table 2

Comparison among various genetic populations.

	F2	DH	BC	RIL	NIL	AIL	MAGIC	NAM
Parents involved	Two	Two	Two	Two	Two	Two	Multiple	Multiple
Resource Type	Transient	Immortal	Transient	Immortal	Immortal	Immortal	Immortal	Immortal
Mapping individuals	Heterozygous and homozygous	Homozygous only	Heterozygous and homozygous	Homozygous only	Homozygous only	Homozygous only	Homozygous only	Homozygous only
Generations required	Two	Two	Two	Six to eight	Six to eight	Usually ten	More than eight	More than six
Multiple alleles/multiple traits	No	No	No	No	No	No	Allowed	Allowed
Recombinant events	Limited	Limited	Limited	Limited	Limited	High	High	High
Suitable for	Family-based linkage (FBL) mapping	FBL mapping	FBL mapping	FBL mapping	FBL mapping	FBL mapping	Dual linkage-LD	Dual linkage-LD
Mapping resolution	Coarse	Coarse	Coarse	Coarse	Fine	Fine	Fine	Fine
Replicated measurements	Not possible	Possible	Not possible	Possible	Possible	Possible	Possible	Possible
Detection of smaller effect QTLs	Low	Low	Low	Low	Low	High	High	High