heritability in the narrow sense

her·i·ta·bil·i·ty in the nar·row sense

the proportion of the total phenotypic variance that can be ascribed to additive genetic variance alone. It reflects the similarity between parent and offspring, and is related to the commercial breeding value.
References in periodicals archive ?
To evaluate the efficiency of early selection, the following methodologies were used: estimates of genetic parameters, individual heritability in the narrow sense ([h.sup.2.sub.a]%), selection gain in percentage GS (%), annual average selection gain in percentage ([GS.sub.annual average]), accuracy ([r.sub.[??]a]) and coincidence index.
Estimates of individual heritability in the narrow sense were obtained by dividing additive genetic variance by phenotypic variance, of which the results are interpreted as heritability of high magnitude ([h.sup.2.sub.a] [greater than or equal to] 0.50), heritability of average magnitude (0.15 [less than or equal to] [ha.sup.2.sub.a] < 0.50) and heritability of low magnitude ([h.sup.2.sub.a] < 0.15) (Resende, 2002).
Table 2 shows that individual heritability in the narrow sense had an average magnitude for the production characteristics and the number of fruits in the two cropping periods.
All of the heritability in the narrow sense of sire half-sib and the heritability in the broad sense of dam full-sib of body weight, test diameter of S.
This is the first report of heritability in the narrow sense reported for sea urchins.