Efficient statistical design in two-phase experiments on vase life in carnations ( Dianthus caryophyllus L.)

Boxriker, Maike; Boehm, Robert; Möhring, Jens; Piepho, Hans‐Peter

doi:10.1016/j.postharvbio.2016.12.003

Cited by 13 publications

(7 citation statements)

References 24 publications

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“…Two stems were harvested from a single stock plant and individual (EU1). A randomly chosen stem was assessed immediately after harvesting in the laboratory for VL, whereas the other stem was first submitted to transport simulation for 14 days (Boxriker et al, 2017b ) and afterwards assessed for VL in the lab.…”

Section: Methodsmentioning

confidence: 99%

“…TEMP was a covariate to account for the greenhouse temperature in P1, PT·FM·ENTRY denotes the individuals grouped by family effect, REP·BLK the incomplete blocks within replicates and the residual error REP·BLK·PLT . Expanding, model (5) by the term PT·FM, denoting the family effect, and implementing the CS structure for the sum of PT·FM and PT·FM·ENTRY random effects, family-index selection for SL was based on the model

Individual selection for BN for the mini carnation, was considered by expanding model (5) with a post-blocking factor POS to account better for variation induced by drop inlets of the sub-surface boxes (Boxriker et al, 2017b ),

The factor POS had nine levels, each represented one planting position within a subsurface box (Figure 2 ).…”

Section: Methodsmentioning

confidence: 99%

“…Currently, selection in ornamentals (Boxriker et al, 2017a , b ; Molenaar et al, 2017 ) is based on individual performance, which is known to be a poor strategy when heritability is low. Alternatively, response to selection could be improved by considering family information.…”

Section: Introductionmentioning

confidence: 99%

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Phenotypic Selection in Ornamental Breeding: It's Better to Have the BLUPs Than to Have the BLUEs

Molenaar

Boehm²,

Piepho

2018

Front. Plant Sci.

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Plant breeders always face the challenge to select the best individuals. Selection methods are required that maximize selection gain based on available data. When several crosses have been made, the BLUP procedure achieves this by combining phenotypic data with information on pedigree relationships via an index, known as family-index selection. The index, estimated based on the intra-class correlation coefficient, exploits the relationship among individuals within a family relative to other families in the population. An intra-class correlation coefficient of one indicates that the individual performance can be fully explained based on the family background, whereas an intra-class correlation coefficient of zero indicates the performance of individuals is independent of the family background. In the case the intra-class correlation coefficient is one, family-index selection is considered. In the case the intra-class correlation coefficient is zero, individual selection is considered. The main difference between individual and family-index selection lies in the adjustment in estimating the individual's effect depending on the intra-class correlation coefficient afforded by the latter. Two examples serve to illustrate the application of the BLUP method. The efficiency of individual and family-index selection was evaluated in terms of the heritability obtained from linear mixed models implementing the selection methods by suitably defining the treatment factor as the sum of individual and family effect. Family-index selection was found to be at least as efficient as individual selection in Dianthus caryophyllus L., except for flower size in standard carnation and vase life in mini carnation for which traits family-index selection outperformed individual selection. Family-index selection was superior to individual selection in Pelargonium zonale in cases when the heritability was low. Hence, the pedigree-based BLUP procedure can enhance selection efficiency in production-related traits in P. zonale or shelf-life related in D. caryophyllus L.

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Section: Methodsmentioning

confidence: 99%

The factor POS had nine levels, each represented one planting position within a subsurface box (Figure 2 ).…”

Section: Methodsmentioning

confidence: 99%

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Phenotypic Selection in Ornamental Breeding: It's Better to Have the BLUPs Than to Have the BLUEs

Molenaar

Boehm²,

Piepho

2018

Front. Plant Sci.

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“…() reported an experiment in which plants were cultivated in the first phase and cuttings from that phase were rooted in the second phase, while Boxriker et al . (2017b) and Boxriker et al . (2017a) described two‐phase experiments in which the first phase occurred in a greenhouse and the second phase in a laboratory.…”

Section: Some Historymentioning

confidence: 96%

“…Sometimes a treatment, such as exposure to heat, applied to some of the plants in a greenhouse experiment might involve their spending a period in a growth chamber. Molenaar et al (2017) reported an experiment in which plants were cultivated in the first phase and cuttings from that phase were rooted in the second phase, while Boxriker et al (2017b) and Boxriker et al (2017a) described two-phase experiments in which the first phase occurred in a greenhouse and the second phase in a laboratory.…”

Section: Plant Pathologymentioning

confidence: 99%

Multiphase experiments in practice: A look back

Brien

2017

Aus NZ J of Statistics

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Summary Multiphase experiments are introduced and an overview of their design and analysis as it is currently practised is given via an account of their development since 1955 and a literature survey. Methods that are available for designing and analysing them are outlined, with an emphasis on making explicit the role of the model in their design. The availability of software and its use is described in detail. Overall, while multiphase designs have been applied in areas such as plant breeding, plant pathology, greenhouse experimentation, product storage, gene expression studies, and sensory evaluation, their deployment has been limited.

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Breeding and Genetics for Shelf and Vase Life

Mibus

2018

Handbook of Plant Breeding

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Efficient statistical design in two-phase experiments on vase life in carnations ( Dianthus caryophyllus L.)

Cited by 13 publications

References 24 publications

Phenotypic Selection in Ornamental Breeding: It's Better to Have the BLUPs Than to Have the BLUEs

Phenotypic Selection in Ornamental Breeding: It's Better to Have the BLUPs Than to Have the BLUEs

Multiphase experiments in practice: A look back

Breeding and Genetics for Shelf and Vase Life

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