Extended genetic resources of Dactylis glomerata subsp. izcoi in Galicia (northwest Spain)

Lindner, R.; Márquez, Margarita Lema; García, Álvaro López

doi:10.1023/b:gres.0000023457.30193.63

Cited by 11 publications

(10 citation statements)

References 13 publications

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“…The main species of D. glomerata L. is referred to as orchardgrass or cocksfoot (Lindner and Garcia, 1997;Bushman et al, 2011), and is an economically important and extensively used cool-season perennial forage grass in China, along with many other countries that have temperate and cold climates (Sanada et al, 2010). Because of its high yield, good nutrition, adaptability, and shade tolerance, orchardgrass is widely used for grazing and hay production worldwide (Xie et al, 2012).…”

Section: Introductionmentioning

confidence: 99%

Identification of orchardgrass (Dactylis glomerata L.) cultivars by using simple sequence repeat markers

Jiang¹,

Zhang²,

Ma³

et al. 2013

Genet. Mol. Res.

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ABSTRACT. The accurate identification of orchardgrass (Dactylis glomerata L.) cultivars is necessary to ensure purity for consumers, the effective utilization of cultivars, and to protect the intellectual property for breeders. Therefore, this study aimed to use SSR to construct DNA fingerprinting of orchardgrass cultivars. The genetic diversity of 32 orchardgrass cultivars originated from 21 countries, but grown in China, was assessed using a set of 29 SSR markers distributed across 9 linkage groups of the orchardgrass genome. A total of 229 bands were detected, with an average of 7.9 bands per marker. The average polymorphic rate for the species was 92.1%. The polymorphism information content ranged from 0.771 to 0.893. The genetic similarity ranged from 0.55 to 0.84, which confirmed a high level of genetic diversity among orchardgrass cultivars. The unweighted pair-group method, in combination with the arithmetic mean algorithm (UPGMA) dendrogram and principal coordinate analysis, showed a separation of 6 major clusters among 32 cultivars. The number of distinguishable cultivars ranged from 3 to 23, with an average of 12.1 per primer. Moreover, 11 bands that showed stable and repeatable SSR patterns were amplified by A01E14, A01K14, and D02K13. These bands were used to develop the DNA fingerprints for 32 orchardgrass cultivars. In the DNA fingerprints constructed, each cultivar had a unique fingerprinting pattern that was easily distinguished from the others. These results indicate that the SSR marker was polymorphic, and reliable for use in potential large-scale DNA fingerprinting of orchardgrass cultivars.

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Section: Introductionmentioning

confidence: 99%

Identification of orchardgrass (Dactylis glomerata L.) cultivars by using simple sequence repeat markers

Jiang¹,

Zhang²,

Ma³

et al. 2013

Genet. Mol. Res.

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“…Numerous recent studies confirm older evidence that 2x subspecies have very restricted distributional ranges (Amirouche and Misset 2007;Gauthier et al 1998;Guignard 1985;Jay and Lumaret 1995;Lindner and Garcia 1997). Tetraploids, particularly ssp.…”

Section: Origin and Systematicsmentioning

confidence: 52%

“…It consists of the single species Dactylis glomerata L. (Domin 1943) and at least 18 subspecies at 2n = 6x = 42, 2n = 4x = 28, and 2n = 2x =14 ploidy levels. Most subspecies are diploids (Lumaret 1988), but 'tetraploids represent about 95% of the genus, and display great morphological variability' (Lindner et al 2004). Lumaret (1988) in a comprehensive review provides a map of the distributional ranges for these subspecies, of which 2x species are considered the most ancient.…”

Section: Origin and Systematicsmentioning

confidence: 99%

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Cocksfoot

Yukitoshi¹,

Gras²,

Santen³

2010

Fodder Crops and Amenity Grasses

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“…These findings demonstrate that ploidy‐level variation contributes less than adaptive trait diversity to the present diversity of habitats for fine‐leaved fescue taxa. Indeed, de Wet (1986) reported no consistent pattern of climatic or geographical distribution of ploidy levels within species or genera of the Poaceae, as did Lindner & García (1997) for Galician Dactylis .…”

Section: Discussionmentioning

confidence: 99%

Contribution of ploidy‐level variation and adaptive trait diversity to the environmental distribution of taxa in the ‘fine‐leaved fescue’ lineage (genus Festuca subg. Festuca)

Sampoux¹,

Huyghe

2009

Journal of Biogeography

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Aim We assessed the relative contribution of ploidy-level variation and adaptive trait diversity to the diversity of taxon realized niches in a plant lineage with several ploidy levels.Location A large number of sites covering a wide range of environmental conditions in France.Methods Our material comprised a collection of populations from several taxa of the 'fine-leaved fescue' lineage, namely section Aulaxyper (Festuca rubra s.l.) and subsection Festuca (Festuca ovina s.l.) of the subgenus Festuca. This collection was assessed for several traits related to vegetative growth, investment in seed production, morphology and phenology. Environmental parameters that best differentiate taxon-realized niches were identified by multivariate ordination and logistic regression. Canonical correlation analyses were performed to relate plant traits and ploidy-level variation to these environmental parameters. Taxon differentiation was assessed along the first canonical directions of the plant descriptor (plant-trait and ploidy-level) space. ResultsThe climatic summer water balance, soil texture and land use were identified as the main environmental parameters differentiating taxon realized niches. Canonical correlation analyses revealed associations between plant traits and these environmental parameters, independent of ploidy-level variation. More specifically, the production of long and abundant rhizomes appeared to be an efficient adaptation to poor climatic summer water balance. In contrast, the ploidy level was rather weakly associated with environmental parameters. The marked prevalence of high ploidy levels in the collection suggests that they could have a competitive advantage in the range of environmental conditions investigated. Main conclusionsAdaptive trait diversity appears to contribute more than ploidy-level variation to the present diversity of realized niches for fine-leaved fescue taxa, although plant-trait variations were associated to some extent with ploidy-level variation. However, cytotypes with high ploidy levels could have been efficient colonizers and competitors, favouring the expansion of the lineage and leading to their present prevalence. Furthermore, adaptive trait diversification may have been an efficient factor in niche diversification for the present cytotypes with high ploidy levels.

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Extended genetic resources of Dactylis glomerata subsp. izcoi in Galicia (northwest Spain)

Cited by 11 publications

References 13 publications

Identification of orchardgrass (Dactylis glomerata L.) cultivars by using simple sequence repeat markers

Identification of orchardgrass (Dactylis glomerata L.) cultivars by using simple sequence repeat markers

Cocksfoot

Contribution of ploidy‐level variation and adaptive trait diversity to the environmental distribution of taxa in the ‘fine‐leaved fescue’ lineage (genus Festuca subg. Festuca)

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