Germplasm image analysis of &lt;i&gt;Astragalus maritimus&lt;/i&gt; and &lt;i&gt;A. verrucosus&lt;/i&gt; of Sardinia (subgen. &lt;i&gt;Trimeniaeus&lt;/i&gt;, Fabaceae)

Mattana, Efisio; Grillo, Oscar; Venora, Gianfranco; Bacchetta, Gianluigi

doi:10.3989/ajbm.2008.v65.i1.252

Cited by 7 publications

(2 citation statements)

References 1 publication

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“…The discriminating analysis was also applied to recognize plants infesting crops, on the base of leaf size and colour (CAMARGO NETO et al 2006), many wild species and cropped varieties can be recognised by their morphological traits (Bacchetta et al 2008;Mattana et al 2008, Venora et al 2007aVenora et al 2007b). In the same way, the karyotype data were used as quantitative traits of chromosomes morphology and used to distinguish subgenus Vicia species.…”

Section: Discussionmentioning

confidence: 99%

The karyotype as a tool to identify plant species: Vicia species belonging to Vicia subgenus

2008

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Karyotypes of 27 species (2n=10, 12 and 14) belonging to the subgenus Vicia have been inserted as the training set for Linear Discriminant Analysis (a statistic procedure that uses the variables of known groups or species to classify-identify new unknown groups or species using the same variables). Many of the accessions inserted in the identifi er as unknown (40 new accessions analysed) have been identifi ed correctly. Besides, identification mistakes or species attribution have been highlighted. In fact, in some cases, the recorded karyotype for an analysed accession could not be corresponded to the literature data for that species of the related accession stored in the germplasm bank. In these cases Linear Discriminant Analysis (Identifi er) has given a precise indication of the similarity of the analysed karyotype in the Data Base (Training set), with the specie having much more similar chromosomes. This type of identifi cation, realised only with the karyotype data, appears to be the fi rst example of karyotype used as a tool to identify plant species, using multivariate analysis techniques.

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Section: Discussionmentioning

confidence: 99%

The karyotype as a tool to identify plant species: Vicia species belonging to Vicia subgenus

2008

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“…5), anche grazie alla duplicazione dei lotti che garantiscono il mantenimento della diversità genetica delle popolazioni analizzate in caso di guasti o incidenti che possano occorrere alla banca di pertinenza (BG-SAR). Il materiale raccolto ha consentito di caratterizzare i semi di unità tassonomiche endemiche e ad areale di distribuzione puntiforme da un punto di vista morfologico (Mattana et al, 2008), approfondendo la conoscenza tassonomica di specie quali A. maritimus, a lungo confuso con A. verrucosus e rivalutato nel 1978 (Corrias, 1978;De Marco et al, 1978), Verbascum plantagineum descritto da Moris (1858-59) e solo recentemente rivalutato (Bacchetta & Pontecorvo, 2005;Arrigoni, 2006) o di recente descrizione come Linaria arcusangeli (Atzei & Camarda, 1984;Mossa & Bacchetta, op. cit.…”

Section: Discussione E Conclusioniunclassified

Studi di biologia della conservazione di specie vegetali endemiche della Sardegna nell'ambito del progetto “GENMEDOC”

Bacchetta¹,

Fenu²,

Mattana³

2008

Webbia

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Numerose specie rischiano l'estinzione poiché si trovano in habitat soggetti a frammentazione o in aree sottoposte a disturbo antropico, oppure presentano un numero ridotto di popolazioni o di individui riproduttori (Griggs, 1940; Stebbins, 1942; Drury, 1974;Rabinowitz, 1981;Snogerup, 1985;Lavergne et al., 2004). Alcune tra queste sono naturalmente rare, altre lo stanno diventando, soprattutto nel bacino del Mediterraneo, a causa, diretta o indiretta, del disturbo antropico o ancora per cause naturali (Montmollin de & Strahm, 2005). Gli studi di biologia della conservazione, che comprendono analisi popolazionali, indagini demografiche e relative alla biologia riproduttiva, consentono di valutare lo stato di conservazione delle specie e la possibilità di sopravvivenza a lungo termine delle popolazioni, agevolando l'individuazione di strategie per la loro gestione e protezione. Accettato il 18 Settembre 2008Conservation biology studies on the endemic species from Sardinia within the "GENMEDOC" Project -The achieved results of the Interreg IIIB "Genmedoc" project (2004)(2005)(2006) are here reported. Data focused on the conservation biology studies of Sardinian endemic species are showed in this work. During the project 26 populations of 16 species were investigated and the ex situ conservation for these species was guaranteed by storage of 65 seed lots in the seedbank. Furthermore 8 species were analysed by in situ characterization of 17 populations: for each population ecological studies were carried out. Real and possible threats that affect these populations were detected. For 6 species effective germination protocols were identified and also valied by other two project partners. These protocols allow evaluating seed quality for the stored lots and their longevity during next years; moreover the knowledge of the best germination conditions will be able to schedule a possible cultivation or an in situ re-introduction for these species. These results were obtained by sistematic conservation biology studies of threatened endemic species of Sardinia by a tested and internationally acknowledged methodology.

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Ecological and morphological seed traits of Polygala sardoa and P. sinisica: A comparative study on two endemic species of Sardinia

Mattana

Daws

Fenu

et al. 2010

Flora - Morphology, Distribution, Functional Ecology of Plants

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Germplasm image analysis of <i>Astragalus maritimus</i> and <i>A. verrucosus</i> of Sardinia (subgen. <i>Trimeniaeus</i>, Fabaceae)

Cited by 7 publications

References 1 publication

The karyotype as a tool to identify plant species: Vicia species belonging to Vicia subgenus

The karyotype as a tool to identify plant species: Vicia species belonging to Vicia subgenus

Studi di biologia della conservazione di specie vegetali endemiche della Sardegna nell'ambito del progetto “GENMEDOC”

Ecological and morphological seed traits of Polygala sardoa and P. sinisica: A comparative study on two endemic species of Sardinia

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