Rice Breeding for High Grain Yield under Drought: A Strategic Solution to a Complex Problem

Table 4

Large-effect QTLs identified at IRRI for high rice yield under severe reproductive-stage drought in upland and lowland ecosystems.

QTL	Population	Ecosystem/stress	Ch	Marker/interval	Position (cM)	Significance			𝑅^2 (%)		Reported by
						LOD	𝐹 value	𝑃 value	Phenotypic	Genotypic
qDTY 1.1	N22/Swarna	Lowland/stress	1	RM11943-RM12091			40.8		13.4		Vikram et al. [8]
	N22/IR64	Lowland/stress	1	RM11943-RM12091			57.6		16.9		Vikram et al. [8]
	N22/MTU1010	Lowland/stress	1	RM11943-RM12091			40.0		12.6		Vikram et al. [8]
	Apo/IR64	Upland/stress	1	RM472	162.9	9.26				54.0	Venuprasad et al. [30]
qDTY 2.1	Apo/2*Swarna	Lowland/stress	2	RM324				0.01		16.4	Venuprasad et al. [9]
qDTY 3.1	Apo/2*Swarna	Lowland/stress	3	RM416				0.01		30.7	Venuprasad et al. [9]
qDTY 3.2	N22/Swarna	Lowland/stress	3	RM60-RM22			15.1		18.5		Vikram et al. [8]
	IR77298-5-6-18/2*Sabitri	Lowland/stress	3	RM569-RM517			10.1		23.4		Yadaw et al. [24]
qDTY 6.1	Apo/2*Swarna	Upland/nonstress	6	RM510	11.3			<0.0001		66.0	Venuprasad et al. [31]
	Apo/2*Swarna	Lowland/nonstress	6	RM510	11.3			<0.0001		39.0	Venuprasad et al. [31]
	Vandana/IR72	Upland/stress	6	RM19367	9.2			<0.0001		40.0	Venuprasad et al. [31]
	Apo/IR72	Upland/stress	6	RM510	11.3			<0.0001		63.0	Venuprasad et al. [31]
qDTY 10.1	N22/MTU1010	Lowland/stress	10	RM216-RM304			24.2		5.0		Vikram et al. [8]
qDTY 12.1	Vandana/Way Rarem	Upland/stress	12	RM28048-RM28166	49.0	34.0			33.0	51.0	Bernier et al. [21]
	IR74371-46-1-1/2*Sabitri	Lowland/stress	12	RM28166-RM28199			48.8		23.8		Mishra et al. [25]

Source: Kumar et al. [20].