A new species of Hedysarum (Fabaceae) in Iran and other new Hedysarum records

Ranjbar, Massoud; Karamian, Roya; Olanj, N.

doi:10.1111/j.1095-8339.2007.00716.x

Cited by 14 publications

(10 citation statements)

References 4 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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“…The taxonomy of the genus Onobrychis continues to be subject of much confusion, mainly because of the different approaches to species delimitation, resulting in varying numbers of recognized species (BOISSIER 1872;SIRJAEV 1925;HEDGE 1970;BALL 1978;DUMAN and VURAL 1990;AKTOKLU 2001). Recently some new taxa of the genus have been described from Iran (RANJBAR 2009;RANJBAR et al 2004;2006;2007a;2007b;2008;2009). …”

Section: Introductionmentioning

confidence: 94%

Cytosystematics of threeOnobrychisspecies (Fabaceae) in Iran

2010

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In this study, we describe the morphological characters and meiotic chromosome number and behavior of different wild populations belonging to Onobrychis viciifolia Scop., O. transcaucasica Grossh. and O. altissima Grossh. belonging to Onobrychis sect. Onobrychis in Iran. All Iranian populations of O. viciifolia and O. altissima studied here were tetraploid and showed 2n = 4x = 28 chromosome number, but O. transcaucasica populations were diploid. The basic chromosome number (x = 7) is consistent with the proposed base number for O. viciifolia and O. altissima from IPCN. For O. altissima, two ploidy levels (2n = 2x = 14 and 2n = 4x = 28) have been previously reported from Caucasus. The fact that no diploid populations of O. altissima were found in Iran, would suggest a relatively recent origin of the species, most probably in Caucasus.Although O. transcaucasica is diploid, its remarkable similarities in morphology to O. viciifolia and O. altissima can be suggested its relatively recent origin for these taxa. Almost all taxa studied here displayed regular bivalent pairing and chromosome segregation at meiosis. However, meiotic abnormalities observed included varied degree of sticky and fragmented chromosomes, laggards and bridges in anaphase to telophase, desynapsis in anaphase I and metaphase II, asynchronous nuclei and cytomixis.

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“…In ‘Flora Iranica’, 18 species (19 taxa), of which 10 species (11 taxa) are endemic to Iran, were treated (Rechinger 1984). Recently, several new Iranian taxa have been described in this genus (Ranjbar et al 2006, 2007, 2008, Ranjbar 2010, Akrami et al 2011, Amirabadi Zadeh 2011).…”

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confidence: 99%

Hedysarum kalatense sp. nov. (Fabaceae) from Iran

Dehshiri

2012

Nordic Journal of Botany

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Hedysarum kalatense Dehshiri sp. nov. (Fabaceae) is described and illustrated from Khorassan, Iran. It belongs to sect. Crinifera and is distinct among Iranian species. This species appears to be closely related to H. macranthum (Freyn & Sint.) B. Fedtschenko. The diagnostic characters, as well as a full description and a detailed illustration are provided. Hedysarum kalatense is evaluated as ‘Vulnerable’ (VU) according to IUCN red list criteria.

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A new species of Hedysarum (Fabaceae) in Iran and other new Hedysarum records

Cited by 14 publications

References 4 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

Cytosystematics of threeOnobrychisspecies (Fabaceae) in Iran

Hedysarum kalatense sp. nov. (Fabaceae) from Iran

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