Table 2.

Details of traits studied and methods/software used for QTL analysis in four mapping populations

Mapping population	Trait studied	Method employed	Software used	References
PI	GPC, growth traits, yield traits	Single-locus (SMA, SIM, CIM, MCIM), two-locus	QTL Cartographer, QTLMapper, QTLNetwork	Wang et al., 1999; 2004; Prasad et al., 2003; Yang et al., 2005; Kumar et al., 2007
PII	GPC, PHST, yield traits	Single-locus (CIM, MCIM), two-locus	QTL Cartographer, QTLMapper, QTLNetwork	Wang et al., 1999; 2004; Kulwal et al., 2004; 2005a; Yang et al., 2005; Kumar et al., 2007
PIII	PHST	Single-locus (CIM)	QTL Cartographer	Wang et al., 2004; Kulwal et al., 2005b
PIV	GW	Single-locus (SMA, CIM)	QTL Cartographer	Wang et al., 2004; Kumar et al., 2006

GPC: Grain protein content; PHST: Pre-harvest sprouting tolerance; GW: Grain weight; SMA: Single marker analysis, SIM: Simple interval mapping, CIM: Composite interval mapping, MCIM: Multiple-trait composite interval mapping