Detection of QTLs for Yield Heterosis in Rice Using a RIL Population and Its Testcross Population

Table 2

Mean trait values and standard deviation of the parent lines, reference F₁s, and segregating populations.

Type
		NP	NGP	NSP	SF (%)	TGW (g)	GY (g)
Parent line	TQ
	IRBB52
	IRBB59
	Zh9B
Reference F1	Zh9A/TQ
	Zh9A/IRBB52
	Zh9A/IRBB59
Population	RIL
	TC
Derivative
	TC-RIL	−0.05	3.03		−

, Teqing; Zh9B, Zhong 9B; Zh9A, Zhong 9A; RIL, recombinant inbred line; TC, testcross F₁; , mid-parent heterosis; TC-RIL, increase of trait value in TC over its corresponding RIL.
values are presented as mean ± sd. NP, number of panicles per plant; NGP, number of grains per panicle; NSP, number of spikelets per panicle; SF, spikelet fertility; TGW, 1000-grain weight; GY, grain yield per plant. at .