Table 1.

The four donors and recurrent parents used in the multiple backcross gene pyramiding

Cultivar/breeding line	Description	Variety type	Cross	Genotype on carrier chromosomes and target gene (s) or QTLs											References
				Sub	xa5	Xa21	qBL1	qBL11	Bph3	TPS	Wx	SSiia	Os2AP	Hd1
PinK3	High yielding aromatic rice (pseudo-recurrent parent)	RIL	IR71501/(KDMl105/CT9993)	-	-	-	-	-	+	-	+	-	+	+	Rice Science Center (unpublished)
CholSub1	Submergence tolerance aromatic rice with high GT	RIL	IR57514/KDMl105	+	-	-	-	-	-	-	-	+	+	+	Jantaboon et al. 2011
Xa497	BLB resistance aromatic rice	BC2F2	IR62266/KDMl105	-	+	+	-	-	-	-	-	-	+	+	Korinsak 2009
RBPiQ	Blast resistance	RIL	JHN/KDMl105	-	-	-	+	+	-	-	-	-	-	+	Rice Science Center (unpublished)
Bph162	Bph resistance photosensitive rice	BC3F6	Rathu Heenati/KDMl105	-	-	-	-	-	+	+	-	-	-	-	Jairin et al. 2009

+ = desirable allele.

- = undesirable allele.