Table 4. Coefficients of correlation for grain yield and grain protein yield with different.

The bolded text, bold-italicized text and italicized text indicate positive or negative correlations between parameters, respectively. **, and * indicate significance at P < 0.01 and P < 0.05, respectively.

R	Grain yield	Grain protein yield
NAAAleaf	0.857**	0.910**
NAAMleaf	0.764*	−0.702*
NAAAstem	0.954**	0.933**
NAAMstem	−0.534	−0.602
NAAAspike	0.708*	0.710*
NAAMspike	−0.675	−0.605
NTAleaf	0.909**	0.951**
TEleaf	0.986**	0.989**
CPleaf	0.266	0.369
NTAstem	0.990**	0.987**
TEstem	0.972**	0.986**
CPstem	0.694	0.638
NTAspike	0.847**	0.793**
TEspike	0.794*	0.931*
CPspike	0.698	0.627
NAFA	−0.043	−0.152
CP	−0.672*	−0.750*
NR	0.896**	0.941**
GS	0.978**	0.984**
FAAleaf	0.989**	0.990**
FAAgrain	0.983**	0.971**
Vmax	0.879**	0.842**
Vmean	0.831**	0.777**
D	0.721*	0.652*

Notes.

NAAA_leaf

nitrogen accumulation amount in leaf at anthesis

NAAM_leaf

nitrogen accumulation amount in leaf at maturity

NAAA_stem

nitrogen accumulation amount in stem and sheath at anthesis

NAAM_stem

nitrogen accumulation amount in stem and sheath at maturity

NAAA_spike

nitrogen accumulation amount in spike axis and grain husk at anthesis

NAAM_spike

nitrogen accumulation amount in spike axis and grain husk at maturity

NTA_leaf

nitrogen translocation amount from leaf

TE_leaf

translocation efficiency from leaf

CP_leaf

contribution proportion from leaf

NTA_stem

nitrogen translocation amount from stem and sheath

TE_stem

translocation efficiency from stem and sheath

CP_stem

contribution proportion from stem and sheath

NTA_spike

nitrogen translocation amount from spike axis and grain husk

TE_spike

translocation efficiency from spike axis and grain husk

CP_spike

contribution proportion from spike axis and grain husk

FAA_leaf

free amino acid in flag leaf

FAA_grain

free amino acid in grain.

*, ** significant at the 0.05 and 0.01 probability levels, respectively, ns, no significant.