Taxonomic Notes on Onobrychis sect. Hymenobrychis (Fabaceae, Hedysareae) in Iran

Ranjbar, Massoud; Karamian, Roya; Hajmoradi, Fatemeh

doi:10.3417/2007119

Cited by 14 publications

(9 citation statements)

References 8 publications

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“…Recently several new taxa have been described in Onobrychis and Hedysarum, both of the tribe Hedysareae, from Iran (Ranjbar et al 2004, 2006, 2007a, 2007b, Ranjbar 2009, Ranjbar et al 2009a, 2009b, 2010a, 2010b.…”

Section: Introductionmentioning

confidence: 98%

Meiotic chromosome number and behaviour of Onobrychis avajensis (Fabaceae): a new species from western Iran

Ranjbar¹,

Karamian²,

Afsari³

2010

Plecevo

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Background and aims -The present study is focused on the cytogenetic and morphological criteria allowing to distinguish a new taxon from Onobrychis sect. Heliobrychis. This section is the largest section in O. subg. Sisyrosema represented with 21 species in Iran. The new species belongs to the O. subsect. Boissierianae characterized by perennial plants with well-developed stems and O. andalanica group with uniformely yellow corolla. Methods -The morphological features and meiotic chromosome number and behaviour were studied in O. avajensis Ranjbar. Key results -The novelty Onobrychis avajensis Ranjbar, endemic to Iran, is described and illustrated from two collections from a single locality between Avaj and Abgram in Qazvin Province in the west Zagros. It is closely related to O. andalanica Bornm. but differs from it in a few morphological characters. In addition, meiotic chromosome number and behaviour were studied in O. avajensis. This report is the first cytogenetic analysis of this taxon. O. avajensis is a diploid plant and possesses 2n = 2x = 16 chromosomes, consistent with the proposed base number of x = 8. The general meiotic behaviour of the species was regular, with bivalent pairing and normal chromosome segregation at meiosis. Meiotic abnormalities were observed included a varying degree of sticky chromosomes with laggards, precocious division of centromeres in metaphase I, bridges in anaphase I and multipolar cells in telophase II. Conclusion -Morphological features support the separation of Onobrychis avajensis Ranjbar as a new species.

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Section: Introductionmentioning

confidence: 98%

Meiotic chromosome number and behaviour of Onobrychis avajensis (Fabaceae): a new species from western Iran

Ranjbar¹,

Karamian²,

Afsari³

2010

Plecevo

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“…These eleven populations represent the only known O. carduchorum populations in Iran (based on over ten years of extensive studies of the genus Onobrychis in Iran: e.g. Karamian et al 2010a, Ranjbar et al 2004, 2009a, 2009b, 2010c, 2010d, 2010e, 2011, Toluei et al 2010. The specimens were prepared according to established herbarium techniques and voucher specimens were deposited in the herbarium of Bu-Ali-Sina University (BASU).…”

Section: Sample Collectionmentioning

confidence: 99%

“…in Iran (e.g. Ranjbar et al 2004, 2009a, 2009b, 2010c, 2010d, 2010e, Toluei et al 2010, the present investigation was carried out to provide for the first time a detailed taxonomic, morphological, genetic and ecogeographical characterization of O. carduchorum in Iran and to test whether different populations of O. carduchorum are differentiated with respect to the corresponding environmental conditions. Because of lack of information about the Iranian range of this species, we here present a description of this species in Iran and compare it to information derived from occurrences of the species in other countries.…”

Section: Introductionmentioning

confidence: 99%

Iranian Onobrychis carduchorum (Fabaceae) populations: morphology, ecology and phylogeography

Toluei¹,

Atri²,

Ranjbar³

et al. 2013

Plecevo

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Aims -Iran is one of the main centres of diversity for the genus Onobrychis Miller. This study includes 55 specimens from eleven representative wild populations of Onobrychis carduchorum C.C.Towns. originating from their natural habitats in Iran. The aims of this study are to provide a detailed taxonomical, morphological, genetic and ecogeographical characterization of O. carduchorum in Iran. Methods -The specimens which represent all Iranian populations were biometrically assessed using 45 quantitative and fifteen qualitative morphological characters. The phenotypic variation among the populations depends on various environmental factors; thus at each sample site we recorded data regarding longitude, latitude, altitude, slope inclination, slope orientation, substrate, minimum and maximum annual temperatures, number of rainy days, annual precipitation as well as soil traits including texture, electrical conductivity, organic carbon, total nitrogen, available phosphorus, available potassium, total neutralizing value, pH, and saturation percentage. The floristic composition of each population habitat was examined as an indicator of environmental conditions. To assess genetic variation, we obtained nucleotide sequence data from the internal transcribed spacer of the nuclear ribosomal DNA (ITS) and carried out genomic fingerprints using inter-simple sequence repeat (ISSR) analysis. Results -Cluster analysis of morphological characters showed that the eleven populations could be divided into two major groups including five subgroups. Principal component analysis (PCA) of floristic data confirmed the two major morphological groups suggesting habitudinal segregation among the groups and the indicative value of floristic composition of study sites in assessing intraspecific variation in the target species. Furthermore, canonical correspondence analysis (CCA) of ecogeographic data showed correlations between morphological variations and ecogeographic factors. Longitude, latitude, substrate, available potassium, clay%, total nitrogen, organic carbon, slope orientation, sand%, texture, altitude and rainy days are apparently the main environmental variables associated with morphological groups of O. carduchorum. Both ITS and ISSR data indicate that O. carduchorum is a young species with a recent divergence of its populations.

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“…Onobrychis indicate that this section may be primitive in the genus and the other sections are derived from its members. Ashurmetov and Normatov (1998) assumed that the primary centre of genetic diversity of the genus Onobrychis is in the Mediterranean countries, while Yıldız et al (1999) and Ranjbar et al (2009bRanjbar et al ( , 2010cRanjbar et al ( , 2010d argued that it is in north-and southwestern Asia. et al 2010c).…”

Section: Pollen Morphologymentioning

confidence: 99%

“…The taxonomy of the genus continues to be subject of much confusion, mainly because of different approaches to species delimitation, resulting in varying numbers of recognized species (Boissier 1872, Širjaev 1925, Hedge 1970, Ball 1978, Duman and Vural 1990, Aktoklu 2001. Recently some new taxa of the genus have been described from Iran (Ranjbar et al 2004(Ranjbar et al , 2007(Ranjbar et al , 2009b(Ranjbar et al , 2010a.…”

mentioning

confidence: 99%

Systematic study of Onobrychis shahpurensis (Fabaceae) in Iran, with the description of O. neychalanensis sp. nov.

Ranjbar¹,

Hadadi²,

Karamian³

2011

Nordic Journal of Botany

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The study of morphology, meiotic behavior, chromosome number and pollen morphology of different populations of Onobrychis shahpurensis Rech. f. (O. sect. Onobrychis) was undertaken to evaluate and determine the variation and circumscription of this species in Iran. All populations were found to be diploid with 2n=2x=14, consistent with the previously proposed base number x=7 for the species. Almost all the populations displayed regular bivalent pairing and chromosome segregation at meiosis. However, some meiotic abnormalities were observed including various degrees of sticky chromosomes with laggards and bridges in anaphase to telophase, fragmented chromosomes in metaphase I, asynchronous nucleus in metaphase II and cytomixis. In addition, Onobrychis neychalanensis Ranjbar, Hadadi & Karamian, a new diploid species (2n=2x=14), belonging to the same section and morhologically similar to O. shahpurensis, but restricted to the northern Khalil‐Kuh mountain, northwest Iran, is described and illustrated.

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Taxonomic Notes on Onobrychis sect. Hymenobrychis (Fabaceae, Hedysareae) in Iran

Cited by 14 publications

References 8 publications

Meiotic chromosome number and behaviour of Onobrychis avajensis (Fabaceae): a new species from western Iran

Meiotic chromosome number and behaviour of Onobrychis avajensis (Fabaceae): a new species from western Iran

Iranian Onobrychis carduchorum (Fabaceae) populations: morphology, ecology and phylogeography

Systematic study of Onobrychis shahpurensis (Fabaceae) in Iran, with the description of O. neychalanensis sp. nov.

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