Genetic Variability and Correlation Coefficients of Major Traits in Early Maturing Rice under Rainfed Lowland Environments of Nepal

Table 4

Estimation of means, ranges, variance components, phenotypic coefficient of variations, genotypic coefficient of variations, broad sense heritability, genetic advance and genetic advance as percent of mean of yield and yield traits of early maturing rice under rainfed lowland environment of Nepal.

Traits	Mean	Range	s^2g	s^2p	PCV%	GCV%		EGA	GAM
Days to heading	86.9	81.1-92.2	13.86	14.81	4.42	4.28	0.94	7.40	8.50
Days to maturity	115.1	107.7-119.6	13.50	14.65	3.33	3.20	0.92	7.30	6.30
Plant height (cm)	108.1	105.4-106.6	0.58	3.59	1.75	0.70	0.16	0.62	0.58
1000-gr.wt.(g)	21.2	19.9-22.6	1.24	1.68	6.10	5.24	0.74	1.97	9.30
No. of Tiller m^−2	237.5	223.3-247.1	42.56	133.90	4.87	2.75	0.32	7.57	3.20
Grain yield (Kg ha^−2)	3810.3	3078.7-4266.7	240385.20	276869.50	13.80	12.86	0.86	932.18	24.48

s²g = genotypic variance, s²p = phenotypic variance, PCV = phenotypic coefficient of variation, GCV = genotypic coefficient of variation, EGA = expected genetic advance, GAM = genetic advance as percentage of mean.