Mapping QTLs for Fertility Restoration of Different Cytoplasmic Male Sterility Types in Rice Using Two Oryza sativa ×O. rufipogon Backcross Inbred Line Populations

Table 1

Performance of spikelet fertility in the testcross populations and F₁ plants from Xieqingzao B (XB) crossed with CMS lines.

Year	Combination	F1   (%)	Testcross population
			Mean (%)	SD	CV	Range (%)	Skewness	Kurtosis
2010	ZA/XXD-BIL	5.1	17.5	13.7	0.78	1.1–90.4	2.0	6.0
	XA/XXD-BIL	0.6	15.0	12.9	0.86	1.4–82.6	2.6	9.2
2014	ZA/XDX-BIL	7.5	35.7	22.26	0.62	1.8–88.9	0.55	−0.81
	XA/XDX-BIL	1.1	38.8	23.46	0.60	3.0–93.2	0.46	−0.87
	DbA/XDX-BIL	20.0	34.9	22.09	0.63	2.6–89.2	0.44	−0.92

F₁ fertility means the average F₁ fertility derived from parent Xieqingzao B and CMS lines (ZA, XA, and DbA).