Poa densa(Poaceae), an overlooked Turkish steppe grass, and the evolution of bulbs inPoa

Cabi, Evren; Soreng, Robert J.; Gillespie, Lynn J.; Amiri, Neda

doi:10.3372/wi.46.46201

Cited by 13 publications

(12 citation statements)

References 16 publications

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“…Bulbs appear to have arisen in Poa at least twice and possibly as many as four times (Cabi et al 2016). Taxa having bulbs are distributed in four clades: (1) P. supersect. Poa ( P. densa Troitsky and P. diversifolia (Boiss.…”

Section: Resultsmentioning

confidence: 99%

Updated checklist of Poa in the Iberian Peninsula and Balearic Islands

Ortega‐Olivencia¹,

Alcaraz²

2018

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Based on our study of 4,845 herbarium sheets of the genus Poa from the area covered by Flora iberica, namely, the Iberian Peninsula and the Balearic Islands, we recognise 24 taxa (17 species, 1 subspecies and 8 varieties), mostly perennials. Most of these taxa have wide global and/or European distributions, while two (P. legionensis and P. minor subsp. nevadensis) are Spanish endemics and two have restricted distributions (P. ligulata, Iberia–North Africa; P. flaccidula, Iberia–North Africa and the Balearic Islands, extending to Provence, France). We have studied the original publications of more than 225 names considered as synonyms, with those more historically cited in Flora iberica taken into account in this paper; a total of 26 are new synonyms. The following names are typified: P. alpina var. involucrata Lange, P. annua var. lanuginosa Sennen, P. minor subsp. nevadensis Nannf., P. paui Font Quer, P. sulcata Lag. and P. trivialis var. flaccida Willk. ex J.J. Rodr. We include P. compressa L. in the flora of Portugal for the first time and present detailed illustrations of three very interesting taxa (P. legionensis, P. minor subsp. nevadensis and P. ligulata). In addition to a general species key, we provide the following information for each taxon: synonyms, types, typification, the most relevant iconography, regional flowering time, regional and general distribution and, as supplementary material, the number of sheets examined and a list of selected materials.

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Section: Resultsmentioning

confidence: 99%

Updated checklist of Poa in the Iberian Peninsula and Balearic Islands

Ortega‐Olivencia¹,

Alcaraz²

2018

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“…Branches having MP bootstrap support (BS) > 85% and Bayesian posterior probability (pp) support > 95% were considered strongly supported. See the following publications for genotype notation in Poa : Soreng et al (2010, 2017), Nosov et al (2015), Cabi et al (2016, 2017). …”

Section: Methodsmentioning

confidence: 99%

Poa secunda J. Presl (Poaceae): a modern summary of infraspecific taxonomy, chromosome numbers, related species and infrageneric placement based on DNA

Soreng¹,

Gillespie²

2018

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Poasecunda J. Presl. s.l. is a morphologically highly variable bunchgrass that is a valuable forage species in western North America. There has been much controversy as to whether multiple taxa should be recognised and at what rank in this taxonomically challenging apomictic complex. Here we propose an infraspecific classification for Poasecunda of six varieties within two subspecies, juncifolia and secunda. New combinations are P.secunda vars. ampla, gracillima, juncifolia, nevadensis and scabrella. Conflicting plastid and nrDNA phylogenies show that P.sect.Secundae is of ancient hybrid origin. Based on this and its distinct morphology, the section is raised to the rank of subgenus. A key is presented for P.secunda infraspecies and closely related non-arctic species. Suppl. materials are provided of chromosome counts for Secundae taxa and D.D. Keck specimen annotations of taxa here included in P.secunda.

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“…In order to keep track of relationships among the many species of Poa, a system of genotype codes was proposed (Soreng et al, 2010), which uses letters to refer to major clades detected in plastid (LARGE CAPITALS) and nuclearribosomal (SMALL CAPITALS) DNA phylogenetic analyses. This system was followed by Cabi et al (2016Cabi et al ( , 2017, Gillespie et al (2018), , and Nosov et al (2015and Nosov et al ( , 2019, with minor modifications. See Table 2 for a list of clade name abbreviations.…”

Section: Genotype Designationsmentioning

confidence: 99%

“…Of some 200 species known to have polyploid genomes, 133 are tetraploids (77 only known as tetraploids), but many species have higher numbers, sometimes series of numbers (often indicative of apomixis). DNA of the genus Poa has been examined for some 370 species (Soreng, 1990;Gillespie & Soreng, 2005;Gillespie et al, 2007Gillespie et al, , 2008Gillespie et al, , 2009Gillespie et al, , 2010Gillespie et al, , 2018Nosov & Rodionov, 2008;Soreng et al, 2010Soreng et al, , 2015aSoreng et al, , 2017aRefulio Rodríguez et al, 2012;Hoffmann et al, 2013;Birch et al, 2014;Nosov et al, 2015Nosov et al, , 2019Giussani et al, 2016;Cabi et al, 2016Cabi et al, , 2017, out of 570 currently accepted (by RJS accounting).…”

Section: Introductionmentioning

confidence: 99%

Breeding systems and phylogeny in Poa, with special attention to Northeast Asia: The problem of Poa shumushuensis and sect. Nivicolae (Poaceae)

Soreng

Olonova

Probatova

et al. 2020

J of Sytematics Evolution

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Poa sect. Poa subsect. Nivicolae (Prob.) Tzvelev was circumscribed to include four species of the Soviet Union: Poa shumushuensis, Poa caucasica, Poa irkutica, and Poa veresczaginii. Bayesian phylogenetic analyses of plastid and nuclear-ribosomal DNA revealed that it is polyphyletic, none of these species are closely related. Poa shumushuensis, type of sect. Nivicolae, or its ancestor, likely displayed the nrDNA genotype characteristic of the higher polyploid P. sect. Malacanthae. Genotype codes are designated for each species: HX, CC, PHP, and SHP. Poa sect. Nivicolae s.s. is restricted to P. shumushuensis; P. sect. Irkuticae is restricted to P. irkutica; P. caucasica is moved to P. subg. & sect. Caucasicae nov.; and P. sect. Dschungaricae is resurrected for P. veresczaginii and two other species. Although diclinous breeding systems are known in many western hemisphere species of Poa, dicliny is infrequent and little studied in Asian Poa. Poa shumushuensis is judged to be either sequentially gynomonoecious or gynodioecious. A ratio of 2 perfect-, to 2 mixed-, to 1 pistillate-flowered inflorescences from different plants in P. shumushuensis is suggestive of a recessive allele for stamen suppression, and this is associated with subtle sexual-dimorphism. Poa irkutica is diclinous with a breeding system between simple gynomonoecy and sequential gynomonoecy; P. caucasica is perfectly flowered; and P. veresczaginii has infrequent abortive anthers, indicative of limited dicliny, or sterility for other reasons possibly related to its reticulate origin. In total, 23 Asian species are here reported to be diclinous and their breeding systems are characterized. A lectotype is designated for P. fauriei.

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Poa densa(Poaceae), an overlooked Turkish steppe grass, and the evolution of bulbs inPoa

Abstract: BioOne Complete (complete.BioOne.org) is a full-text database of 200 subscribed and open-access titles in the biological, ecological, and environmental sciences published by nonprofit societies, associations, museums, institutions, and presses.

Cited by 13 publications

References 16 publications

Updated checklist of Poa in the Iberian Peninsula and Balearic Islands

Updated checklist of Poa in the Iberian Peninsula and Balearic Islands

Poa secunda J. Presl (Poaceae): a modern summary of infraspecific taxonomy, chromosome numbers, related species and infrageneric placement based on DNA

Breeding systems and phylogeny in Poa, with special attention to Northeast Asia: The problem of Poa shumushuensis and sect. Nivicolae (Poaceae)

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