Cytogenetics of the Festuca-Lolium Complex

Jauhar, Prem P.

doi:10.1007/978-3-642-84086-9

Cited by 88 publications

(80 citation statements)

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“…Species of Festuca show an intricate history of past and recent hybridization and polyploidization (Jauhar, 1975;Catalán, 2006, and references therein), including intergeneric crosses with other Loliinae (Ainscough et al, 1986;Jauhar, 1993), that might obscure the recovery of divergence ages and geographical scenarios. Nonetheless, the recovered phylogenies have mostly shown a congruent systematics-based resolution Catalán, 2006).…”

mentioning

confidence: 99%

Dated historical biogeography of the temperate Loliinae (Poaceae, Pooideae) grasses in the northern and southern hemispheres

Inda

Segarra‐Moragues

Müller

et al. 2008

Molecular Phylogenetics and Evolution

152

207

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mentioning

confidence: 99%

Dated historical biogeography of the temperate Loliinae (Poaceae, Pooideae) grasses in the northern and southern hemispheres

Inda

Segarra‐Moragues

Müller

et al. 2008

Molecular Phylogenetics and Evolution

152

207

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“…The closely allied genera Lolium and Festuca are classified in the tribe Poeae of the sub-family Pooideae in the grass family and contain a number of important species for temperate grassland agriculture (Jauhar 1993). The Lolium genus contains only eight species, including the agronomically important taxa annual or Italian ryegrass (Lolium multiflorum Lam.)…”

mentioning

confidence: 99%

Identification of cultivars and accessions of Lolium, Festuca and Festulolium hybrids through the detection of simple sequence repeat polymorphism

2004

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Molecular diversity and genetic affinity in the Lolium/Festuca grass complex have been assessed using simple sequence repeat (SSR) marker technology. The genotypic set was derived from three accessions of Lolium perenne, two cultivars of Lolium multiflorum, two cultivars of Festuca pratensis, two cultivars of Festuca arunidinacea and ten accessions from different intergeneric hybrid (Festulolium) combinations. The majority of the genomic DNA-derived SSR primer pairs from perennial ryegrass (LPSSR) and Italian ryegrass (LMSSR) produced clear, simple and distinctive amplification products from the majority of the genotypes.The efficiency of cross-specific amplification for LPSSR markers varied from 38% in F. pratensis to 93% in two cultivars of Festulolium and for LMSSR markers from 57% in F. pratensis to 87% in L. multiflorum. Of 40 amplified markers, fourteen (35%) produced species-difference alleles in the relation to cultivars used in the present study. Thirty-five LPSSR locus-derived alleles were found to be specific to Lolium species, 4 to F. pratensis and 6 to F. arundinacea. For LMSSR alleles, 8 were specific to Lolium species and 5 were only associated with L. multiflorum, and null alleles were detected for F. pratensis in all instances. These species-difference markers could clearly identify different accessions of In Festulolium hybrid breeding, it is desirable to be able to distinguish the DNA of the parental species, in order to monitor the extent of the introgressed 3 regions. Fluorescence in situ hybridisation (FISH) methodology using labelled genomic DNA (genomic in situ hybridisation: GISH) has been widely used to identify alien chromatin (Thomas et al. 1994, Humphreys et al. 1995, Humphreys and Pašakinskiené 1996. However, there are potential difficulties in the identification of small introgressed chromosome segments using this technique (Humphreys et al. 1998).The development of molecular genetic marker technologies provides alternative procedures for the assessment of genetic diversity, cultivar identification and the genomic composition of polyploid and hybrid taxa. Several Moreover, SSRs have been shown to provide a powerful means for discrimination between closely related genotypes in many plant species (Yang et al. 1994, Russell et al. 1997, Röder et al. 1998 The cycling regime for the PCR amplification of LMSSR markers consisted of an initial denaturation step of 10 min at 94°C, followed by denaturation for 1 min at 94°C followed by 30 s at 94°C, 30 s at 60°C, 2 min at 72°C; repeated for 35 cycles, and a final extension of 7 min at 72°C (Fujimori et al. in preparation). Detection of SSR polymorphisms:The samples were prepared for polyacrylamide gel electrophoresis (PAGE) by addition of 2 μl gel loading buffer to the reaction mixture. Ten µl of amplification products were loaded on 10% (w/v) non-denaturing polyacrylamide gels for electrophoresis in 1×TBE. Each gel was run for 2.5 h at constant voltage (250V). The banding patterns were visualised following staining with ethidium ...

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“…Schedonorus. The polyploids of this sub-genus, whose genome origins have previously been reported (e.g., Jauhar, 1993), are believed to derive as a consequence of species' hybridization and through assemblies of novel advantageous genome combinations that gave enhanced adaptations absent in their parental species. An excellent example was the result of the hybridization between the North and Central European grass Festuca pratensis Huds.…”

Section: Introductionmentioning

confidence: 99%

“…; here-after referred to as F. glaucescens Arcang. ), and F. mairei St. Yves (Jauhar, 1975(Jauhar, , 1993Kopecký et al, 2009) and is considered essential in their evolution and speciation. If the chromosome pairing regulator was incorporated successfully into synthetic Festulolium hybrids and its function maintained, it should provide for regular chromosome disjunction, consistent disomic inheritance, and the levels of genome stability over generations required to fully exploit the benefits to be derived from use of Festulolium amphiploids in agriculture, and adherence to the strict requirements for genome uniformity and stability necessary for variety status within the UK.…”

Section: Introductionmentioning

confidence: 99%

“…The close relationship between F. apennina and the diploid fescue F. pratensis, a species having wider distribution throughout Eurasia and north-western Africa (Foggi and Müller, 2009), has long been known. Alternative claims have been made that F. apennina is an autotetraploid cytotype of F. pratensis, or now and more widely accepted, an allotetraploid species derived from two ancestral progenitor species (Lewis, 1977;Jauhar, 1993). Borrill et al (1976) reported a different ecological and altitudinal distribution for the two fescue species with F. apennina absent below 1300 m above sea level (a.s.l.…”

Section: Introductionmentioning

confidence: 99%

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An Increasing Need for Productive and Stress Resilient Festulolium Amphiploids: What Can Be Learnt from the Stable Genomic Composition of Festuca pratensis subsp. apennina (De Not.) Hegi?

Kopecký

Harper

Bartoš

et al. 2016

Front. Environ. Sci.

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Cytogenetics of the Festuca-Lolium Complex

Cited by 88 publications

References 0 publications

Dated historical biogeography of the temperate Loliinae (Poaceae, Pooideae) grasses in the northern and southern hemispheres

Dated historical biogeography of the temperate Loliinae (Poaceae, Pooideae) grasses in the northern and southern hemispheres

Identification of cultivars and accessions of Lolium, Festuca and Festulolium hybrids through the detection of simple sequence repeat polymorphism

An Increasing Need for Productive and Stress Resilient Festulolium Amphiploids: What Can Be Learnt from the Stable Genomic Composition of Festuca pratensis subsp. apennina (De Not.) Hegi?

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