Graphical analysis of multi-environmental trials for wheat grain yield based on GGE-biplot analysis under diverse sowing dates

Table 3 Genetic parameters including variance components, broad-sense heritability (h² _b), phenotypic coefficient of variation (PCV), and genetic coefficient of variation (GCV) of measured traits in 13 varieties of wheat in eight sowing dates during 2012–2014

Traits	Variance components				h² _b (%)	GCV (%)	PCV (%)
Traits	σ² _g	σ² _gy	σ² _e	σ² _p	h² _b (%)	GCV (%)	PCV (%)
GY	0.16	0.61	0.33	0.51	31.39	12.01	16.89
BY	3.89	3.10	0.87	5.11	76.17	14.68	16.82
NSP	7754.06	13,674.74	61,208.44	12,498.52	62.04	19.83	25.17
NGSP	16.68	14.67	9.80	23.16	72.00	16.74	19.73
GWSP	0.1629	0.0225	0.0200	0.3097	52.60	13.17	16.92
TGW	9.77	16.06	3.20	15.46	63.17	8.88	11.18
HI	0.0019	0.0018	0.0010	0.0029	65.88	0.17	0.21

σ²_g genotype variance; σ²_gy genotype × year variance, σ²_e error variance; σ²_p phenotypic variance; h²_b broad-sense heritability, GCV Genetic coefficient of variation, PCV Phenotypic coefficient of variation, BY Biological yield, GWSP Grain weight per spike, GY Grain yield, HI Harvest index, NGSP Number of grains per spike, NSP Number of spikes per m², TGW Thousand grain weight

ISSN: 1471-2229