Table 1. The seven essential amino acid contents (%) of parents and the IF₂ population in 2009 and 2010.

Years	Traits	Mean	IF2					Parents
			S.D	Min	Max	Skew	Kurt	HS46	MAR
	Phe	2.27	0.12	1.93	2.62	−0.01	−0.06	2.33a	2.30b
	Leu	2.29	0.10	2.03	2.53	−0.13	−0.28	2.43A	2.32B
	Lys	1.77	0.05	1.63	1.91	−0.03	−0.24	1.98a	1.97b
2009	Thr	1.18	0.04	1.07	1.29	−0.05	−0.17	1.26a	1.25b
	Ile	1.25	0.05	1.11	1.38	−0.13	−0.28	1.32a	1.30b
	Val	1.70	0.07	1.52	1.86	−0.15	−0.25	1.81a	1.78b
	Met	0.53	0.02	0.47	0.57	−0.20	0.09	0.59a	0.58b
	Phe	2.40	0.07	2.21	2.57	−0.11	−0.51	2.46A	2.37B
	Leu	2.34	0.06	2.18	2.51	0.04	−0.24	2.38A	2.30B
	Lys	1.83	0.04	1.72	1.97	0.26	0.46	1.86A	1.80B
2010	Thr	1.22	0.03	1.14	1.30	0.02	0.17	1.24A	1.20B
	Ile	1.28	0.04	1.19	1.39	0.05	−0.17	1.31A	1.26B
	Val	1.78	0.05	1.64	1.90	−0.08	−0.45	1.81A	1.74B
	Met	0.52	0.01	0.49	0.56	0.18	−0.18	0.53A	0.51B

a, b significance P = 0.05; A, B significance P = 0.0.