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Puecher, D. I.; Robredo, Claudio G.; Ríos, Raúl; Rimieri, P.

doi:10.1023/a:1012068415647

Cited by 21 publications

(6 citation statements)

References 12 publications

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“…Compared with other forage grasses, the level of intra-specific AFLP polymorphism detected here (~50%) is lower than reported for Cynodon dactylon (75%) (Wu et al 2004) and Poa arachnifera Torr. (64%) (Renganayaki et al 2001), comparable with Uniola paniculata (59%) (Prasanta et al 2005), and higher than the level obtained for Bromus catharticus (6%) (Puecher et al 2001).…”

Section: Discussionmentioning

confidence: 48%

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Genetic diversity among varieties of the native forage grass Trichloris crinita based on AFLP markers, morphological characters, and quantitative agronomic traits

Cavagnaro

Cavagnaro²,

Lemes³

et al. 2006

Genome

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We assessed the genetic diversity in Trichloris crinita (Poaceae) varieties from South America, using AFLPs, morphological characters, and quantitative agronomic traits. Owing to the importance of this species for range grazing, we first characterized the varieties based on forage productivity. Biomass production varied 9 fold among the materials evaluated. Analysis of AFLP fingerprints allowed the discrimination of all varieties with a few selected primer combinations. Pair-wise genetic similarities, using marker data, ranged from 0.31 to 0.92 (Jaccard coefficients). Marker-based unweighted pair group method with arithmetic averaging (UPGMA) cluster analysis did not show geographical clustering, but rather grouped the varieties according to their biomass production. We identified 18 markers associated with biomass production, of which 8 showed complete correlation (r = 1.00) with this trait. These DNA markers can be used to assist selection for high forage productivity in T. crinita. Cluster analysis using morphological and quantitative characters revealed 4 distinct groups of varieties, clearly separated according to their biomass yield. The variables foliage height and basal diameter were strongly correlated with biomass production and these phenotypic markers can be used to select productive plants. The relations among the varieties based on AFLP data were significantly correlated with those based on agronomic and morphological characters, suggesting that the 2 systems give similar estimates of genetic relations among the varieties.

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Section: Discussionmentioning

confidence: 48%

“…DNA markers are useful complements of morphological data and quantitative agronomic traits. Amplified fragment length polymorphism (AFLP) (Vos et al 1995) has been successfully used for assessing genetic diversity and relatedness in a number of grasses (Puecher et al 2001;Renganayaki et al 2001;Wu et al 2004).…”

Section: Introductionmentioning

confidence: 99%

Genetic diversity among varieties of the native forage grass Trichloris crinita based on AFLP markers, morphological characters, and quantitative agronomic traits

Cavagnaro

Cavagnaro²,

Lemes³

et al. 2006

Genome

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“…The accurate distinction of varieties plays a crucial role in international intellectual property protection. Over the past few decades, the DUS tests and traditional molecular markers have been widely used for variety identification, and they proved effective for the distinction of self-pollinating plants [ 6 , 38 ]. For plants with outcrossing mating systems, however, within-variety variation is usually high because pollen can be widely spread between varieties, which leads to a low level of differentiation between them [ 39 ].…”

Section: Discussionmentioning

confidence: 99%

RAD-seq as an effective strategy for heterogenous variety identification in plants—a case study in Italian Ryegrass (Lolium multiflorum)

Yao

Xiong

et al. 2022

BMC Plant Biol

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The primary approach for variety distinction in Italian ryegrass is currently the DUS (distinctness, uniformity and stability) test based on phenotypic traits. Considering the diverse genetic background within the population and the complexity of the environment, however, it is challenging to accurately distinguish varieties based on DUS criteria alone. In this study, we proposed the application of high-throughput RAD-seq to distinguish 11 Italian ryegrass varieties with three bulks of 50 individuals per variety. Our findings revealed significant differences among the 11 tested varieties. The PCA, DAPC and STRUCTURE analysis indicated a heterogeneous genetic background for all of them, and the AMOVA analysis also showed large genetic variance among these varieties (ΦST = 0.373), which were clearly distinguished based on phylogenetic analysis. Further nucleotide diversity (Pi) analysis showed that the variety ‘Changjiang No.2’ had the best intra-variety consistency among 11 tested varieties. Our findings suggest that the RAD-seq could be an effectively alternative method for the variety distinction of Italian ryegrass, as well as a potential tool for open-pollinated varieties (OPVs) of other allogamous species.

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“…Bromus L. (Poaceae: Pooideae: Bromeae; conserved type B. secalinus L.) is a genus of annual, biennial, and perennial grasses, with 160 to 170 species widely distributed in temperate regions ( Acedo & Llamas, 2001 ; Saarela et al, 2007 ; Saarela, Peterson & Valdés-Reyna, 2014 ). Several Bromus species are important forage grasses ( Ferdinandez, Somers & Coulman, 2001 ; Puecher et al, 2001 ; Araghi et al, 2014 ) and many are invasive weeds ( Ainouche et al, 1999 ; Otfinowski, Kenkel & Catling, 2007 ; Fink & Wilson, 2011 ; Huttanus, Mack & Novak, 2011 ). The following combination of characters distinguishes Bromus from other grass genera: sheaths connate for most of their length, awns subterminal when present, ovary apices with hairy bilabiate appendages, and simple starch grains ( Smith, 1970 ).…”

Section: Introductionmentioning

confidence: 99%

A phylogenetic analysis ofBromus(Poaceae: Pooideae: Bromeae) based on nuclear ribosomal and plastid data, with a focus onBromussect.Bromus

Nasiri

Kazempour‐Osaloo

Hamzeh’ee

et al. 2022

PeerJ

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To investigate phylogenetic relationships among and within major lineages of Bromus, with focus on Bromus sect. Bromus, we analyzed DNA sequences from two nuclear ribosomal (ITS, ETS) and two plastid (rpl32-trnLUAG, matK) regions. We sampled 103 ingroup accessions representing 26 taxa of B. section Bromus and 15 species of other Bromus sections. Our analyses confirm the monophyly of Bromus s.l. and identify incongruence between nuclear ribosomal and plastid data partitions for relationships within and among major Bromus lineages. Results support classification of B. pumilio and B. gracillimus within B. sect. Boissiera and B. sect. Nevskiella, respectively. These species are sister groups and are closely related to B. densus (B. sect. Mexibromus) in nrDNA trees and Bromus sect. Ceratochloa in plastid trees. Bromus sect. Bromopsis is paraphyletic. In nrDNA trees, species of Bromus sects. Bromopsis, Ceratochloa, Neobromus, and Genea plus B. rechingeri of B. sect. Bromus form a clade, in which B. tomentellus is sister to a B. sect. Genea–B. rechingeri clade. In the plastid trees, by contrast, B. sect. Bromopsis species except B. tomentosus form a clade, and B. tomentosus is sister to a clade comprising B. sect. Bromus and B. sect. Genea species. Affinities of B. gedrosianus, B. pulchellus, and B. rechingeri (members of the B. pectinatus complex), as well as B. oxyodon and B. sewerzowii, are discordant between nrDNA and plastid trees. We infer these species may have obtained their plastomes via chloroplast capture from species of B. sect. Bromus and B. sect. Genea. Within B. sect. Bromus, B. alopecuros subsp. caroli-henrici, a clade comprising B. hordeaceus and B. interruptus, and B. scoparius are successive sister groups to the rest of the section in the nrDNA phylogeny. Most relationships among the remaining species of B. sect. Bromus are unresolved in the nrDNA and plastid trees. Given these results, we infer that most B. sect. Bromus species likely diversified relatively recently. None of the subdivisional taxa proposed for Bromus sect. Bromus over the last century correspond to natural groups identified in our phylogenetic analyses except for a group including B. hordeaceus and B. interruptus.

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Untitled

Cited by 21 publications

References 12 publications

Genetic diversity among varieties of the native forage grass Trichloris crinita based on AFLP markers, morphological characters, and quantitative agronomic traits

Genetic diversity among varieties of the native forage grass Trichloris crinita based on AFLP markers, morphological characters, and quantitative agronomic traits

RAD-seq as an effective strategy for heterogenous variety identification in plants—a case study in Italian Ryegrass (Lolium multiflorum)

A phylogenetic analysis ofBromus(Poaceae: Pooideae: Bromeae) based on nuclear ribosomal and plastid data, with a focus onBromussect.Bromus

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