Intraspecific chromosomal polymorphism of Iris pumila L. from the territory of Ukraine

Twardovska, M. O.; Андреев, И. О.; Кунах, В. А.

doi:10.3103/s0095452715050096

Cited by 4 publications

(5 citation statements)

References 9 publications

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“…Результати та обговорення У результаті каріологічного аналізу клітин апікальної меристеми корінців проростків півників нами встановлено диплоїдні набори 2n=32 для I. pumila [25] та 2n=16 для I. attica та I. pseudopumila [26]. Типові метафазні пластинки цих видів представлені на рисунку 1.…”

Section: матеріали і методиunclassified

“…У таксономічному відношенні ці два види різні, хоча за зовнішнім виглядом подібні між собою. Каріотип I. pumila складається з 16 пар хромосом розміром 10-15 мкм [25].…”

Section: матеріали і методиunclassified

“…Найвищим рівень міксоплоїдії був у I. pumila (с. Дмитрівка) -80 % міксоплоїдних рослин, дещо нижчим -для проаналізованих зразків із трьох інших досліджуваних популяцій цього виду (таблиця). Поряд із диплоїдними клітинами у них траплялися клітини з гаплоїдним, а також гіпо-та гіпердиплоїдним числами хромосом [25]. Найнижчим рівень міксоплоїдії був у зразках I. pseudopumilа, він складав 13 %.…”

Section: матеріали і методиunclassified

“…Для I. pseudopumila цей показник становив 2,6 %. За цитогенетичного дослідження I. attica структурних перебудов хромосом нами не виявлено [25,26]. За даними наукової літератури, рівень спонтанних анафазних аберацій хромосом в інтактних рослинах у нормі зрідка перевищує 1 % [28].…”

Section: матеріали і методиunclassified

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Identification of putative origin of Iris pumila L. karyotype

Twardovska¹,

Андреев²,

Кунах³

2019

Fakt. eksp. evol. org.

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Aim. The study was aimed at cytogenetic analysis of Iris pumila, I. attica, and I. pseudopumila, comparative study of the karyotypes of these species, as well as identification of putative origin of I. pumila karyotype. Methods. Cytogenetic analysis of root apical meristem, determination of chromosome number in mitotic metaphase plates, anaphase analysis. Results. The chromosome numbers observed were 2n=32 for I. pumila plants from different localities in Ukraine and 2n=16 for I. attica and I. pseudopumila plants from Greece and Italy, respectively. Some of the plants were mixoploids, the smallest proportion of mixoploids was in I. pseudopumila (10.9%) and the largest in I.pumila from all studied populations (60-80%). Anaphase analysis showed the presence of chromosomal aberrations in 2.6% of cells in roots of I. pseudopumila seedlings. The highest level of structural chromosomal aberrations (9.2%) was found in root apical meristem cells of I. pumila seedlings. Conclusions. The chromosome number was established as 2n=32 for I.pumila plants and 2n=16 for I. attica and I. pseudopumila plants. The high level of mixoploidy (60–80% of mixoploid plants) and anaphase chromosomal aberrations (up to 9.2%) was found in apical meristem of I. pumila seedlings. The amphidipiloid nature of I. pumila was established; the karyotype of the species could be formed as a result of a combination of chromosome sets from hypothetical ancestral species I. attica and I. pseudopumila. Keywords: Iris pumila L., Iris attica Boiss. & Heldr., Iris pseudopumila Tineo, chromosome number, amphidiploid, mixoploidy.

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Section: матеріали і методиunclassified

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Identification of putative origin of Iris pumila L. karyotype

Twardovska¹,

Андреев²,

Кунах³

2019

Fakt. eksp. evol. org.

Self Cite

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“…The species was studied for a long time by a number of researchers [4,[14][15][16][17][18][19][20][21][22]. In particular, the species morphology was described in detail [18,[23][24][25][26][27][28] along with its seed productivity [29] and phytocenotic confinement [30].…”

Section: Introductionmentioning

confidence: 99%

Iris pumila L. and the State of Its Populations in the Samara Region (Southeast of the European Part of Russia)

Mitroshenkova

Ильина

Senator

et al. 2023

IJPB

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The current state of the coenotic populations of Iris pumila L. (Iridaceae) were studied in the southeast of the European part of Russia (Samara Region). The phytocenotic confinement and population structure of the species were assessed. I. pumila preferred growing in steppe zonal communities. In total, 118 species of vascular plants were found in the communities, where I. pumila has been registered, and of which 34 (28.8%) were included into the Red List of the Samara Region and 8 species into the Red List of the Russian Federation. In the study area, populations of I. pumila were represented by a significant number of individuals and were in a stable state. According to the “delta-omega” criterion, the populations were mature (47.0%), transitional (23.5%), maturing (17.6%), and aging (11.9%), which testified to the diversity of population structure and thus to a satisfactory state of the species in the Samara Region. The populations recovered mainly due to individuals of vegetative origin, but this process was rather slow. Under unfavorable conditions, I. pumila populations were characterized by a vegetative settled way of life. Fires, grazing, and destruction of habitats had a significant impact on the population structure and absolute abundance in the Samara Region.

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