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  • 1
    Electronic Resource
    Electronic Resource
    Structural geological evidence from ODP Leg 131 regarding fluid flow in the Nankai prism, Japan
    Amsterdam : Elsevier
    Earth and Planetary Science Letters 109 (1992), S. 463-468 
    Details
    ISSN: 0012-821X
    Source: Elsevier Journal Backfiles on ScienceDirect 1907 - 2002
    Topics: Geosciences , Physics
    Type of Medium: Electronic Resource
    URL: http://linkinghub.elsevier.com/retrieve/pii/0012-821X(92)90106-6
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  • 2
    Electronic Resource
    Electronic Resource
    Sediment deformation and hydrogeology of the Nankai Trough accretionary prism: Synthesis of shipboard results of ODP Leg 131
    Amsterdam : Elsevier
    Earth and Planetary Science Letters 109 (1992), S. 431-450 
    Details
    ISSN: 0012-821X
    Source: Elsevier Journal Backfiles on ScienceDirect 1907 - 2002
    Topics: Geosciences , Physics
    Type of Medium: Electronic Resource
    URL: http://linkinghub.elsevier.com/retrieve/pii/0012-821X(92)90104-4
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  • 3
    Electronic Resource
    Electronic Resource
    Maternal, paternal, additive, and dominance components of variance in Gerbera (1991)
    Springer
    Theoretical and applied genetics 82 (1991), S. 756-760 
    Details
    ISSN: 1432-2242
    Keywords: Heritability ; Extranuclear ; Inheritance ; Reciprocal ; Covariance
    Source: Springer Online Journal Archives 1860-2000
    Topics: Biology
    Notes: Summary Estimates of additive, dominance, maternal, and paternal components of variance were obtained for a sample of 18 traits, including measurements of yield, scapes, flowers, disk, ray and trans florets, leaves, and branching in the Davis population of Gerbera hybrida. The results, based on the covariance of reciprocals, indicate that although heritability averaged 0.52, extranuclear maternal or paternal effects are not important sources of variability. Therefore, reciprocal differences do not seriously affect estimates of additive variance or heritability in this population.
    Type of Medium: Electronic Resource
    URL: http://dx.doi.org/10.1007/BF00227321
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  • 4
    Electronic Resource
    Electronic Resource
    Estimation of components of genetic variance and heritability for flowering time and yield in gerbera using Derivative-Free Restricted Maximum Likelihood (DFRML) (1993)
    Springer
    Theoretical and applied genetics 86 (1993), S. 234-236 
    Details
    ISSN: 1432-2242
    Keywords: Additive variance ; Maximum likelihood ; General Linear Model ; Selection ; Gaussian elimination ; Plant pedigree matrix
    Source: Springer Online Journal Archives 1860-2000
    Topics: Biology
    Notes: Summary Additive genetic components of variance and narrow-sense heritabilities were estimated for flowering time (FT) and cut-flower yield (Y) for six generations of the Davis Population of gerbera using Derivative-Free Restricted Maximum Likelihood (DFRML). Additive genetic variance accounted for 54% of the total variability for FT and 30% of the total variability for Y. The heritability of FT (0.54) agreed with previous ANOVA-based estimates. However, the heritability of Y (0.30) was substantially lower than estimates using ANOVA. The advantages of DFRML and its applications in the estimation of components of genetic variance and heritabilities of plant populations are discussed.
    Type of Medium: Electronic Resource
    URL: http://dx.doi.org/10.1007/BF00222084
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  • 5
    Electronic Resource
    Electronic Resource
    Quantitative analysis of correlations among flower traits in Gerbera hybrida, Compositae (1990)
    Springer
    Theoretical and applied genetics 80 (1990), S. 559-563 
    Details
    ISSN: 1432-2242
    Keywords: Direct response ; Correlated response ; Genetic correlation ; Mean genetic correlation ; Index of efficiency
    Source: Springer Online Journal Archives 1860-2000
    Topics: Biology
    Notes: Summary A Mean Correlation Response (MCR) model was developed to estimate the relative effectiveness of direct selection when other traits also respond to the selection. A measure of the relative effects of mean correlated response and direct response (R) and a measure of the relative efficiency of direct selection (IE) were applied to a genetic correlation matrix of 38 traits. These were measurements of inflorescence, receptacle and involucre, scape, disk florets, ray florets, and trans florets in the Davis population of Gerbera hybrida, Compositae. Generally, traits with high heritability had high direct and mean correlated response; these were often traits measuring disk and trans florets. Traits with low heritability had low direct and mean correlated response; these were often traits measuring the inflorescence. Traits of the inflorescence had the lowest efficiency of direct to mean correlated response.
    Type of Medium: Electronic Resource
    URL: http://dx.doi.org/10.1007/BF00226760
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  • 6
    Electronic Resource
    Electronic Resource
    Estimation of long-term genetic improvement for gerbera using the best linear unbiased prediction (BLUP) procedure (1995)
    Springer
    Theoretical and applied genetics 91 (1995), S. 790-794 
    Details
    ISSN: 1432-2242
    Keywords: Selection response ; Breeding value ; Mixed model ; Maximum likelihood ; Realized heritability
    Source: Springer Online Journal Archives 1860-2000
    Topics: Biology
    Notes: Abstract Long-term genetic improvement is measured by the selection response predicted from estimates of narrow-sense heritability. Accurate estimates of selection response require partitioning the change of population mean into genetic and environmental components. A selection experiment for cut-flower yield was conducted for 16 generations in the Davis population of gerbera (Gerbera hybrida, Compositae). Breeding values were estimated for individual plants in the population using the best linear unbiased prediction (BLUP) procedure. Genetic change in each generation was calculated from the breeding values of individual plants. The results of this study indicate that long-term selection was successful and necessary for the genetic improvement in cut-flower yield. Genetic improvement in mean breeding value over 16 generations was 33 flowers. Mean breeding values increased monotonically with an S-shape pattern while environmental effects fluctuated from generation to generation. Results predict that cut-flower yield in the Davis population of gerbera will continue to respond to selection.
    Type of Medium: Electronic Resource
    URL: http://dx.doi.org/10.1007/BF00220961
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  • 7
    Electronic Resource
    Electronic Resource
    Quantitative analysis of correlations among flower traits in Gerbera hybrida Compositae (1990)
    Springer
    Theoretical and applied genetics 80 (1990), S. 552-558 
    Details
    ISSN: 1432-2242
    Keywords: Genetic correlation ; Heritability ; Hidden genetic correlation
    Source: Springer Online Journal Archives 1860-2000
    Topics: Biology
    Notes: Summary Phenotypic (r p ), genetic (r g ), and environmental, (r e ) correlations were estimated for 38 flower traits in the Davis population of gerbera (Gerbera hybrida, Compositae). Fifty-two percent of r p and 38% of r g were statistically significant at P 〈 0.05. Significant negative r p were infrequent, but significant negative r g occurred in 10% of cases. There was a negative correlation between estimates of r g and r e , resulting in cases where r g was significant, but r p was not. Individual traits varied in their tendency to correlate phenotypically or genetically, and positively or negatively, with other traits. Traits within the same morphological category, such as disk florets or transitional florets, were more highly intercorrelated than were traits from different categories.
    Type of Medium: Electronic Resource
    URL: http://dx.doi.org/10.1007/BF00226759
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  • 8
    Electronic Resource
    Electronic Resource
    Heritability of consumer preference in Gerbera (1983)
    Springer
    Euphytica 32 (1983), S. 465-474 
    Details
    ISSN: 1573-5060
    Keywords: Gerbera hybrida ; consumer preference ; heritability
    Source: Springer Online Journal Archives 1860-2000
    Topics: Agriculture, Forestry, Horticulture, Fishery, Domestic Science, Nutrition
    Notes: Summary Heritabilities and response to selection for consumer preference were estimated for a population of Gerbera. Broad-sense heritability was estimated to be 62 percent. Narrow-sense heritability was estimated by parentoffspring regression to be 76 percent, by full-sib family analysis to be 54 percent, and by half-sib family analysis to be 72 percent. These estimates indicate that most of the variance for consumer preference is genetic and that most of the genetic variance is additive. Estimates of realized heritability averaged 71 percent indicating substantial response of this population to selection for consumer preference.
    Type of Medium: Electronic Resource
    URL: http://dx.doi.org/10.1007/BF00021456
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  • 9
    Electronic Resource
    Electronic Resource
    Components of genetic variation for cut-flower yield in the Davis Population of Gerbera (1985)
    Springer
    Euphytica 34 (1985), S. 759-767 
    Details
    ISSN: 1573-5060
    Keywords: Gerbera hybrida ; gerbera ; heritability ; additive variance ; inbreeding depression ; dominance ratio
    Source: Springer Online Journal Archives 1860-2000
    Topics: Agriculture, Forestry, Horticulture, Fishery, Domestic Science, Nutrition
    Notes: Summary Genetic variances for cut-flower yield in Gerbera hybrida were partitioned into additive and dominance components. Mean additive variance was 37.3 with a standard error of 12.9. Mean dominance variance was 12.7 with a standard error of 32.6. The dominance ratio was 0.34. Narrow sense heritability, estimated from these components of variance, averaged 0.42 with a standard error of 0.13. Heritabilities estimated from parent-offspring regression averaged 0.25. Gain from selection was less then expected; realized heritabilities were approximately 0.20.
    Type of Medium: Electronic Resource
    URL: http://dx.doi.org/10.1007/BF00035414
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  • 10
    Electronic Resource
    Electronic Resource
    Heritability of inflorescence and floret traits in gerbera (1986)
    Springer
    Euphytica 35 (1986), S. 319-330 
    Details
    ISSN: 1573-5060
    Keywords: Gerbera hybrida ; gerbera ; inflorescence ; floret ; scape ; heritability ; components of variance ; flower morphology
    Source: Springer Online Journal Archives 1860-2000
    Topics: Agriculture, Forestry, Horticulture, Fishery, Domestic Science, Nutrition
    Notes: Summary Heritability, repeatability, and components of variance were estimated for 68 morphological characters describing the inflorescence, scape, and florets of Gerbera hybrida. The heritability estimates were generally moderate to high for simple dimension characters and characters which were the mean of several measurements, low to moderate for ratio and composite characters, and low for enumeration characters and characters describing the intraplant variation of traits. The repeatability estimates were generally low for intraplant variation characters, moderate for simple ratio characters, and largest for composite and mean characters. For most of the characters, the variance among inflorescences from the same plant was the largest portion of the total phenotypic variance.
    Type of Medium: Electronic Resource
    URL: http://dx.doi.org/10.1007/BF00028570
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