, 2008 ). Many of these wild and weedy relatives have undesirable characteristics such as high or low flesh pH or low sugar content. Estimates of heritability and correlations among traits can help in the selection of breeding strategies and selection of
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Todd C. Wehner, Rachel P. Naegele, and Penelope Perkins-Veazie
Jordan L. Hartman, Penelope Perkins-Veazie, and Todd C. Wehner
was to estimate narrow-sense heritability and phenotypic relationships among fruit metabolites in two red-fleshed watermelon populations. Methods Cultivation and field design Summer 2015: Parents. In 2015, two North Carolina watermelon populations, NC
Zena Rawandoozi, Timothy Hartmann, David Byrne, and Silvia Carpenedo
acidity in peach ( Boudehri et al., 2009 ; Dirlewanger et al., 2009 ). Several studies have focused on estimating heritability on a progeny-mean basis expressed as the proportion of genetic variance among a progeny to that of the phenotypic variance
Jaejoon Kim and David J. Wolyn
conditions. Effective breeding requires both genetic variation and heritability for attributes of interest. Therefore, the objectives of this study were to assess variation for biochemical and physiological parameters associated with freezing tolerance in
Hiroshi Iwanami, Shigeki Moriya, Nobuhiro Kotoda, Sae Takahashi, and Kazuyuki Abe
of inheritance of fruit softening. Resemblance among relatives is a basic genetic phenomenon, and the degree of resemblance determines heritability, which in turn facilitates the choice of a breeding method for use in genetic improvement ( Falconer
Jennifer L. Emerson, John Frampton, and Steven E. McKeand
Fraser fir established in 1983 found significant differences among sources and among families within seed sources for all traits measured ( Arnold and Jett, 1995 ; Arnold et al., 1994b ; Jett et al., 1993 ). Heritabilities for most traits important in
Robert R. Shortell, William A. Meyer, and Stacy A. Bonos
different environments, it would be helpful to turfgrass breeders to know the heritability of these morphological traits in Kentucky bluegrass. Broad-sense heritability estimates the total genetic effects influencing a trait and includes additive, dominance
Laura P. Peña-Yam, Liliana S. Muñoz-Ramírez, Susana A. Avilés-Viñas, Adriana Canto-Flick, Jacobo Pérez-Pastrana, Adolfo Guzmán-Antonio, Nancy Santana-Buzzy, Erick A. Aguilera-Cauich, and Javier O. Mijangos-Cortés
influencing the slow development of the crop in the region. Precise estimates of genetic parameters, such as the components of variance and narrow-sense heritability for economically important population characteristics in breeding programs, allow us to
J. Steven Brown, Raymond J. Schnell, Tomás Ayala-Silva, J. Michael Moore, Cecile L. Tondo, and Michael C. Winterstein
. Our analysis combined data from 2 later years, when the trees were more mature (2005 and 2007), for the calculation of heritability estimates for five color traits, fruit weight, fruit length, fruit width, and anthracnose resistance. No data were
Christopher S. Cramer
Realized heritability estimates of bolting percentage, pink root and fusarium basal rot severities and incidences, and percentage of single-centered bulbs were estimated for half-sib families of an intermediate-day, open-pollinated onion (Allium cepa L.) population using selection response analysis. Half-sib families were selected based upon an index that equally weighted bolting percentage, pink root and fusarium basal rot severities and incidences, percentage of single-centered bulbs, and bulb quality. Families were subjected to one cycle of half-sib family recurrent selection. Pink root and fusarium basal rot severity was reduced by 17% and 7%, respectively, with realized heritability estimates of 1.28 and 0.65, respectively. More progress for pink root severity was made than was selected. Disease incidence was reduced by 18% and 12%, respectively, with heritability estimates of 0.65 and 0.60, respectively. Very little progress was made for the percentage of single-centered bulbs and this was reflected in a heritability estimate of 0.17. Selection based upon multiple characters at the same time may reduce the effectiveness of making improvements in a single trait. However even with low to moderate heritability, improvements were made, and suggest that further improvements can be made through selection.