Genetic and biochemical differences in populations bred for extremes in maize grain methionine concentration

BMC Plant Biology

Table 2 Mean grain amino acid, total nitrogen, and total sulfur concentration of 10 pooled C8 individuals

	BS11 HM	BS11LM	Ratio HM/LM	BS31HM	BS31LM	Ratio HM/LM
Taurine¹	0.06	0.06	1.00	0.06	0.06	1.00
Hydroxyproline	0.02	0.02	1.00	0.01	0.02	0.50
Aspartic acid	0.73	0.69	1.06	0.66	0.73	0.90
Threonine	0.39	0.35	1.11	0.36	0.39	0.92
Serine	0.49	0.44	1.11	0.47	0.49	0.96
Glutamic acid	2.12	1.84	1.15	2.00	2.12	0.94
Proline	0.93	0.83	1.12	0.90	0.93	0.97
Glycine	0.42	0.40	1.05	0.39	0.42	0.93
Alanine	0.86	0.76	1.13	0.81	0.86	0.94
Cysteine	0.22	0.18	1.22	0.22	0.22	1.00
Valine	0.55	0.51	1.08	0.49	0.55	0.89
Methionine	0.25	0.16	1.56	0.28	0.25	1.12
Isoleucine	0.41	0.38	1.08	0.37	0.41	0.90
Leucine	1.46	1.26	1.16	1.36	1.46	0.93
Tyrosine	0.35	0.30	1.17	0.33	0.35	0.94
Phenylalanine	0.58	0.51	1.14	0.52	0.58	0.90
Hydroxylysine	0.01	0.02	0.50	0.02	0.01	2.00
Ornithine	0.01	0.01	1.00	0.01	0.01	1.00
Lysine	0.34	0.36	0.94	0.31	0.34	0.91
Sum of AAs	11.06	9.94	1.11	10.38	10.85	0.96
Nitrogen (%)²	1.58	1.24	1.27	1.40	1.43	0.98
Total S (ppm)³	874	495	1.76	952	787	1.21

¹Amino acid concentrations are in mass percentage of the amino acid in the tissue analyzed.
²% Nitrogen was determined by combustion analysis.
³Total sulfur content was determined by ICP.

ISSN: 1471-2229