Variation in inflorescence characters and inflorescence development in ecotypes and cultivars of <i>Lolium perenne</i> L.

McGrath, S.; Hodkinson, Trevor R.; Charles, T. M.; Zen, Da-Li; Barth, Susanne

doi:10.1111/j.1365-2494.2010.00759.x

Cited by 13 publications

(18 citation statements)

References 36 publications

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“…The genetic diversity in wild populations (ecotypes) has previously been studied in L. perenne (Balfourier et al 1998 , 2000 ; Bolaric et al 2005a , b ; Cresswell et al 2001 ; McGrath et al 2007 ; Skot et al 2005 ; Yu et al 2011 ). These have all used techniques, such as AFLP, RFLP and RAPD, whereby only a low marker density was assayed and/or a limited number of populations surveyed.…”

Section: Introductionmentioning

confidence: 99%

Genetic–geographic correlation revealed across a broad European ecotypic sample of perennial ryegrass (Lolium perenne) using array-based SNP genotyping

et al. 2015

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Key messagePublically available SNP array increases the marker density for genotyping of forage crop,Lolium perenne. Applied to 90 European ecotypes composed of 716 individuals identifies a significant genetic–geographic correlation.Abstract Grassland ecosystems are ubiquitous across temperate and tropical regions, totalling 37 % of the terrestrial land cover of the planet, and thus represent a global resource for understanding local adaptations to environment. However, genomic resources for grass species (outside cereals) are relatively poor. The advent of next-generation DNA sequencing and high-density SNP genotyping platforms enables the development of dense marker assays for population genetics analyses and genome-wide association studies. A high-density SNP marker resource (Illumina Infinium assay) for perennial ryegrass (Lolium perenne) was created and validated in a broad ecotype collection of 716 individuals sampled from 90 sites across Europe. Genetic diversity within and between populations was assessed. A strong correlation of geographic origin to genetic structure was found using principal component analysis, with significant correlation to longitude and latitude (P < 0.001). The potential of this array as a resource for studies of germplasm diversity and identifying traits underpinning adaptive variation is highlighted.Electronic supplementary materialThe online version of this article (doi:10.1007/s00122-015-2556-3) contains supplementary material, which is available to authorized users.

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Section: Introductionmentioning

confidence: 99%

Genetic–geographic correlation revealed across a broad European ecotypic sample of perennial ryegrass (Lolium perenne) using array-based SNP genotyping

et al. 2015

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“…cultivated varieties of wild plants) and seed market has been established and continues to grow. Consequently, native species are available, but they are mostly of unknown provenances and their life‐history traits may be altered (McGrath et al ), as the plants have been cultivated by humans for unknown generations without facing natural selection.…”

Section: Introductionmentioning

confidence: 99%

Cultivation and Hybridization Alter the Germination Behavior of Native Plants Used in Revegetation and Restoration

Schröder

Prasse

2013

Restoration Ecology

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Native plants are increasingly used for revegetation and restoration. These plants are cultivated for several generations at plant nurseries and often they are of unknown provenance. Therefore, cultivated plants often differ from their wild progenitors in life-history traits. Using germination behavior as example, we tested the assumption that cultivated plants have different life-history traits than their uncultivated progenitors. Cultivated as well as wild individuals of Plantago lanceolata and Lotus corniculatus, two species frequently used in revegetation, were tested in a common garden experiment as well as in incubators for their germination behavior. We observed significantly faster and more abundant germination in cultivated varieties. Using artificial crossings, we found that also hybrids of cultivated varieties and wild relatives germinate faster and more abundant than the wilds. As wild plants acquire their life-history traits by natural selection, we have to assume that they represent the optimal adaptation to the environmental conditions. If these traits are changed by cultivation or by hybridization between cultivated varieties and local populations, the long-term survival probabilities of local populations may be altered. Therefore, the use of cultivated varieties of native plants should be avoided in revegetation.

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“…However, as cultivars are bred for attractive traits, such as flowering (McGrath et al. ), the selection for these traits may outweigh the adaptations of regional subordinate species. In areas that are at risk from unwanted species, it is essential that the desired target species flower and produce viable seed quickly to ensure their long‐term survival in the vegetation community.…”

Section: Discussionmentioning

confidence: 99%

Grassland restoration by seeding: seed source and growth form matter more than density

Walker

Hermann

Kollmann

2014

Applied Vegetation Science

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Question: What is the relative significance of seed source, growth form and seeding density in contributing to restoration of calcareous grasslands?Location: Experimental field site on calcareous gravel in the lowlands north of Munich (S Germany).Methods: The research question was investigated using a dominant grass (Festuca rubra) and three subordinate forbs (Buphthalmum salicifolium, Dianthus carthusianorum, Linum perenne). A randomized split-block design consisting of six blocks was established with two growth forms of F. rubra (rhizomatous, tussock) from two sources (cultivars, 'regional' plants from the region of the field experiment) seeded at two densities (800, 1600 seedÁm À2 ) and inter-seeded with forbs from cultivar and regional sources (100 seedÁm À2 ). Each combination of plant source, growth form and seeding density of the dominant species was replicated six times. Individual numbers of F. rubra (Year 1), the subordinate species (Year 1 and Year 2) and the spontaneously invading alien plant Erigeron annuus (Year 2) were counted, and total cover of vascular plants in each subplot and average number of flowers per area were recorded in Year 2. Results: Regional seed generally had higher establishment than the cultivar counterpart in both the dominant and subordinate species. Growth form and seeding density of F. rubra differed little in their effects on establishment of the forbs, but fewer E. annuus invaded subplots with regional F. rubra, and subplots with the tussock growth form. Only in D. carthusianorum did regional rather than cultivar subordinates produce more flowers.Conclusions: Seed source and growth form are the most significant factors for designing seed mixtures for restoration of calcareous grasslands.

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Variation in inflorescence characters and inflorescence development in ecotypes and cultivars of Lolium perenne L.

Cited by 13 publications

References 36 publications

Genetic–geographic correlation revealed across a broad European ecotypic sample of perennial ryegrass (Lolium perenne) using array-based SNP genotyping

Genetic–geographic correlation revealed across a broad European ecotypic sample of perennial ryegrass (Lolium perenne) using array-based SNP genotyping

Cultivation and Hybridization Alter the Germination Behavior of Native Plants Used in Revegetation and Restoration

Grassland restoration by seeding: seed source and growth form matter more than density

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