TABLE 4.

Most significant sources of variation, percentages of change, P values and goodness-of-fit values in the MLR modeling of percent G+C increments

% G+C increment and determinants	Coefficient	% Change	P value
20–24
Constant	1.98		<0.0001
Feed B	−1.37	−70	<0.0001
r2	0.48		<0.0001
25–29
Constant	3.06		<0.0001
Feed ALate	2.09	+68	0.0004
r2	0.36		0.0004
30–34
Constant	4.76		<0.0001
Feed ALate	0.94	+20	0.04
r2	0.14		0.04
35–39
Constant	7.63		<0.0001
Feed BControl	−1.64	−21	0.0004
Feed AControl	1.27	+17	0.001
r2	0.58		<0.0001
40–44
Constant	12.35		<0.0001
Feed BControl	−2.54	−21	<0.0001
Farm BWheat1	2.28	+18	0.002
Feed AControl	1.39	+11	0.007
r2	0.69		<0.0001
45–49
Constant	12.79		<0.0001
Feed BControl	−2.89	−23	0.0002
Farm BWheat1	−1.58	−12	0.05
r2	0.58		<0.0001
50–54
Constant	16.42		<0.0001
Feed BWheat	5.08	+31	<0.0001
r2	0.69		<0.0001
55–59
Constant	12.63		<0.0001
Feed B	1.91	+15	<0.0001
r2	0.42		<0.0001
60–64
Constant	10.12		<0.0001
Feed BControl	2.85	+28	0.0004
Farm BWheat1	−2.37	−23	0.01
Farm ALate1	1.68	+17	0.02
r2	0.57		<0.0001
65–69
Constant	6.51		<0.0001
Feed BControl	5.37	+82	<0.0001
r2	0.62		<0.0001
70–74
Constant	2.13		<0.0001
Feed BControl	1.75	+82	<0.0001
r2	0.51		<0.0001
75–79
Constant	0.44		<0.0001
Farm BControl2	0.35	+78	0.007
Farm BWheat2	−0.27	−61	0.01
Farm ALate2	−0.16	−37	0.04
r2	0.47		0.0008