qDTY 1.1 , a major QTL for rice grain yield under reproductive-stage drought stress with a consistent effect in multiple elite genetic backgrounds

Table 5 Single-marker analysis for the effect of qDTY_1.1 on grain yield after covariance adjustment for effect of days to 50% flowering under drought stress in three populations

Population	Marker	Mean grain yield of N22 homozygotes (kg/ha)	Mean grain yield of IR64, Swarna, MTU1010 homozygotes (kg/ha)	p-value
N22/IR64	RM431	1273	761	< 0.001
	RM11943	1239	878	< 0.001
N22/Swarna	RM431	1517	926	< 0.01
	RM11943	1484	927	< 0.01
N22/MTU1010	RM431	1543	1149	< 0.01
	RM11943	1531	1199	< 0.01

Homozygotes and heterozygotes determined based on the genotype of RM11943 and RM431.
P < 0.01, highly significant

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