Genotypic and Phenotypic Relationship among Yield Components in Rice under Tropical Conditions

Table 2

Estimates of correlation coefficients at phenotypic (indicated in bold) and genotypic levels among 12 traits in rice genotypes.

		FLR	DF	DM	TH	PPH	PL	FGP	UFGP	100-GW	GWH	YLD
PH	P	0.327	-0.272	-0.519	-0.114	-0.334	-0.194	-0.366	0.285	-0.321	-0.270	-0.342
	G	0.487	-0.401	-0.521	-0.191	-0.386	-0.211	-0.428	0.148	-0.332	-0.281	-0.484
FLR	P		0.214	0.117	0.609	0.462	0.211	0.060	0.026	0.252	0.321	0.348
	G		0.277	0.028	0.628	0.756	0.145	0.123	0.053	0.249	0.234	0.521
DF	P			0.333	0.702	0.559	0.414	0.593	-0.337	0.525	0.528	0.412
	G			-0.099	0.752	NA	0.332	0.713	-0.109	0.545	0.352	0.692
DM	P				0.486	0.818	0.184	0.303	-0.459	0.351	0.473	0.544
	G				0.647	0.856	0.065	0.355	-0.342	0.37	0.351	0.792
TH	P					0.806	0.369	0.735	-0.372	0.593	0.555	0.712
	G					NA	NA	0.85	NA	0.606	NA	0.821
PPH	P						0.386	0.489	-0.467	0.594	0.542	0.632
	G						0.25	0.605	-0.28	0.61	0.338	0.819
PL	P							0.243	0.257	0.817	0.253	0.257
	G							0.538	0.355	0.809	-0.027	0.395
FGP	P								-0.430	0.549	0.506	0.702
	G								-0.597	0.506	0.561	0.639
UFGP	P									-0.150	-0.114	-0.225
	G									-0.131	NA	0.04
100-GW	P										0.341	0.404
	G										0.393	0.582
GWH	P											0.796
	G											0.871

PH: plant height, FLWR: flag leaf length to width ratio, DF: days to flowering, DM: days to maturity, TH: tillers per hill, PPH: panicles per hill, PL: panicle length, FGP: Filled grains per panicle, UFGP: Unfilled grains per panicle, GWH: grain weight per hill, 100-GW: 100-grain weight, YLD: yield in t/ha, P: phenotypic correlation, and G: genotypic correlation.