Table 1. RH for Drosophila melanogaster body weight (μg)¹.

Hybridized Combination	Body weight of F1 hybrid	Body weight of parents		4MPV	2RH
		Father line(♂)	Mother line(♀)
♂WT × ♀eyw	102.66 ± 1.03 (3n = 410)	91.49 ± 0.40 (n = 579)	89.59 ± 2.79 (n = 564)	90.54	13.39%**
♂w1118 × ♀WT	109.90 ± 1.06 (n = 445)	104.78 ± 2.61 (n = 514)	91.49 ± 0.40 (n = 579)	98.14	11.98%**
♂eyw × ♀WT	109.05 ± 2.54 (n  =  419)	89.59 ± 2.79 (n = 564)	91.49 ± 0.40 (n = 579)	90.54	20.44%*

¹Values represent the mean ± SE.

²RH: rate of heterosis. Statistical analysis was performed according to Wu et al.⁴³, * and ** indicate significant difference (P < 0.05) and extremely significant difference (P < 0.01), respectively.

³The number of samples used to determine body weight.

⁴MPV: mid-parent value.