Table 3. Selection pressure analysis of four Hd1 types in several countries.

Haplotype	Country	Subspecies	No. of accessions	π	θw	Tajima's D	Significance of D
Type 7	Bangladesh	Indica	4	0.00065	0.00066	-0.15923	P >0.10
Type 7	Indonesia	Indica and japonica	16	0.00138	0.0027	-2.12711**	P <0.01
Type 7	Laos	Indica	4	0.00044	0.00044	-0.15777	P >0.10
Type 12	Laos	Japonica	10	0.00115	0.00179	-1.75625*	P <0.05
Type 13	Bangladesh	Indica	35	0.00294	0.00603	-1.95450*	P <0.05
Type 13	India	Indica	16	0.00320	0.00267	0.86860	P >0.10
Type 13	Indonesia	Indica and japonica	99	0.00120	0.00547	-2.65204**	P <0.001
Type 13	Indonesia	Japonica	61	0.00137	0.00534	-2.65105**	P <0.001
Type 13	Philippines	Indica and japonica	62	0.00125	0.00432	-2.52823**	P <0.001
Type 13	Philippines	Japonica	46	0.00137	0.00432	-2.50592**	P <0.001
Type 19	Taiwan	Japonica	11	0.00205	0.00328	-1.81600*	P<0.05

Hd1 gene region and nearby ± 10 kb of traditional landraces were used for calculation.