Table 3.

Variance component (± standard errors), broad-sense (H² ) and narrow-sense (h² ) heritabilities (± standard errors), and estimated numbers of effective factors for rhizosheath size measured on two wheat populations

Genetic parameter	Fronteira/EGA Burke	Fronteira/Yitpi
σ2 Genotype	0.55±0.31*	0.46±0.27*
σ2 Residual	0.24±0.02**	0.16±0.03*
H 2	0.59±0.09	0.58±0.08
h 2	0.33±0.08	0.47±0.06
No. effective factors	5.7	2.7

* and ** indicates parameter estimates are statistically different from zero at P = 0.05 and 0.01, respectively.