Selection for yield in Lolium perenne. I. Selection and performance under spaced plant conditions

Hayward, M. D.

doi:10.1007/bf00036867

Cited by 19 publications

(13 citation statements)

References 21 publications

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“…This conclusion, derived from numerous observations on a wide range of species [e.g., [49][50][51][52], is supported by the results of the present study. The correlations between sward-plot biomass yield, row-plot biomass, and spacedplant biomass were all positive and low, indicating that each of these three traits can be used to make progress toward improving sward-plot biomass yields.…”

Section: Discussionsupporting

confidence: 81%

Breeding for Biomass Yield in Switchgrass Using Surrogate Measures of Yield

Casler

Ramstein

2017

Bioenerg. Res.

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Development of switchgrass (Panicum virgatum L.) as a dedicated biomass crop for conversion to energy requires substantial increases in biomass yield. Most efforts to breed for increased biomass yield are based on some form of indirect selection. The objective of this paper is to evaluate and compare the expected efficiency of several indirect measures of breeding value for improving sward-plot biomass yield of switchgrass. Sward-plot biomass yield, row-plot biomass, and spaced-plant biomass were measured on 144 half-sib families or their maternal parents from the WS4U-C2 breeding population of upland switchgrass. Heading date was also scored on row plots and anthesis date was scored on spaced plants. Use of any of these indirect selection criteria was expected to be less efficient than direct selection for biomass yield measured on sward plots, when expressed as genetic gain per year. Combining any of these indirect selection criteria with half-sib family selection for biomass yield resulted in increases in efficiency of 14 to 36%, but this could only be achieved at a very large cost of measuring phenotype on literally thousands of plants that would eventually have no chance of being selected because they were derived from inferior families. Genomic prediction methods offered the best solution to increase breeding efficiency by reducing average cycle time, increasing selection intensity, and placing selection pressure on all additive genetic variance within the population. Use of genomic selection methods is expected to double or triple genetic gains over field-based half-sib family selection.

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Section: Discussionsupporting

confidence: 81%

Breeding for Biomass Yield in Switchgrass Using Surrogate Measures of Yield

Casler

Ramstein

2017

Bioenerg. Res.

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“…The selection criteria adopted was a function of the mean performance of each individual plant over 4 cuts and its regression coefficient on the overall mean yield of all plants within each cut. Further details of the provenance of these lines and the selection procedure are presented in HAYWARD (1983) .…”

Section: Methodsmentioning

confidence: 99%

“…The present study examines the performances under a range of spacing conditions of six lines of ryegrass selected for yield under spaced plant conditions (see HAYWARD, 1983) and considers the utility of various assessment densities and their relationship to sward performance .…”

Section: Introductionmentioning

confidence: 99%

Selection for yield in Lolium perenne. II. performance of spaced plant selections under competitive conditions

Hayward

Vivero

1984

Euphytica

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The performance of six lines of perennial ryegrass (Lolium perenne L .) which had been selected for three generations for production under spaced plant conditions were assessed under increasing levels of competition, namely spaced plants, drills, miniplots and large sown plots . Successful selection for yield under spaced plant conditions was not accompanied by comparable production patterns in the alternative managements . The extreme situation occurred in swards where a significant decline in production was encountered. Negative or no relationships were found in the establishment year between spaced plant production and yield in the alternative conditions whereas in the first harvest year positive correlations occurred between spaced plants, drills and miniplots and only the latter with plots . These varying patterns of performance are considered in relation to the prediction of sward behaviour and the appropriate environment for selection .

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“…In selection experiments for yield of spaced plants, Hayward (1983) (Wilkins, 1986). Heterosis in interpopulational hybrids has been described by Foster (1973), Wilkins and Lovatt (1984) (Brown, 1989 shown by Peeters and Martinelli (1989).…”

Section: Distribution Of Collected Populationsmentioning

confidence: 99%

Agronomic evaluation of a collection of French perennial ryegrass populations: multivariate classification using genotype x environment interactions

Charmet¹,

Balfourier

Bion³

1990

Agronomie

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Summary — Five hundred and forty-seven natural populations of perennial ryegrass were collected as seeds from all over France in 1983 and, then evaluated at 9 sites in spaced plant nurseries. Ten traits of agronomic interest were observed over a 3-yr life cycle. An analysis of variance of these traits for 3 sites with a complete data set revealed the considerable importance of population x location interactions in the total variation for 6 out of the 10 traits:

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Selection for yield in Lolium perenne. I. Selection and performance under spaced plant conditions

Cited by 19 publications

References 21 publications

Breeding for Biomass Yield in Switchgrass Using Surrogate Measures of Yield

Breeding for Biomass Yield in Switchgrass Using Surrogate Measures of Yield

Selection for yield in Lolium perenne. II. performance of spaced plant selections under competitive conditions

Agronomic evaluation of a collection of French perennial ryegrass populations: multivariate classification using genotype x environment interactions

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