Trichomes micromorphology and cytological investigation on Acinos alpinus subsp. meridionalis in Algeria

  • Nacira Saouli Département de Biologie et Ecologie Végétales, Faculté des Sciences de la Nature et de la Vie, Université Ferhat Abbas, Campus El Bez, 19000 Sétif, Algeria
  • Hafsa Rahmani Département de Biologie et Ecologie Végétales, Faculté des Sciences de la Nature et de la Vie, Université Ferhat Abbas, Campus El Bez, 19000 Sétif, Algeria
  • Hadjer Smara Département de Biologie et Ecologie Végétales, Faculté des Sciences de la Nature et de la Vie, Université Ferhat Abbas, Campus El Bez, 19000 Sétif, Algeria
  • Nadra Khalfallah Laboratoire de Génétique, Biochimie et Biotechnologies Végétales Université Mentouri de Constantine 1, Route de Ain El Bey 325, 25017 Constantine, Algeria

Abstract

Anatomical and karyological features were investigated in four populations of Acinos alpinus subsp. meridionalis (Nyman) P. Ball., an Ibero-Maghreban species. Plant material was collected in the field during flowering stage, in contrasting bioclimatic conditions. Fresh material was used for analysis of trichomes morphology with light microscopy. Young meristems and flower buds were fixed for karyological analysis. Two types of capitate glandular, one type of peltate glandular, and four types of non-glandular trichomes were observed on different parts of the plants, including the stems, leaves and flowers. Trichomes distribution and density showed variability among organs, but no intraspecific variability was found. The chromosome number 2n = 2x = 18 is reported for the first time for Algerian populations. Furthermore, aberrant meiotic behavior in the form of cytomixis was observed in one population of A. alpinus subsp. meridionalis – cytoplasmic strand was formed between more than two cells at different stages of meiosis. Other types of abnormalities such as lagging chromosomes, and formation of triads with microcytes were also discovered. Results are discussed in comparison with literature.

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Figure 1. Trichomes of Acinos alpinus subsp. meridionalis
Published
2018-04-10
How to Cite
SAOULI, Nacira et al. Trichomes micromorphology and cytological investigation on Acinos alpinus subsp. meridionalis in Algeria. Modern Phytomorphology, [S.l.], v. 12, p. 33-42, apr. 2018. ISSN 2227-9555. Available at: <http://ojs.phytomorphology.org/index.php/MP/article/view/517>. Date accessed: 08 sep. 2018. doi: https://doi.org/10.5281/zenodo.1216175.
Section
Research Articles