Table 2 Formulas for the different genetic parameters estimated
From: Physiological and agronomical evaluation of elite rice varieties for adaptation to heat stress
Genetic Parameters | Formulas | Meaning of terms |
|---|---|---|
Genotypic Variance (GV) Phenotypic Variance (PV) Heritability in the broad sense (H2) | VG = (MSG-MSE)/r VP=VG+(MSE)/r = MSG/r H2 = (VG/VP)*100 | MSG: mean square of the genotype MSE: mean square of the error r: number of replications |
Coefficient of genotypic variation (GCV) Coefficient of phenotypic variation (PCV) | GCV(%) = (\(\sqrt{VG}/\) X)*100 PCV(%) = (\(\sqrt{VP}/\) X)*100 | √VG = standard deviation of genotypic variance √VP = standard deviation of the phenotypic variance X = trait mean |