Results 31 to 40 of about 10,746,066 (301)

Chromosome Number Variation in Iranian Populations of Acorus calamus [PDF]

open access: yesJournal of Genetic Resources, 2019
Different ploidy levels, diploid (2n=2x=24) to hexaploid (2n=6x=72) have been reported for Acorus calamus, a perennial medicinal plant. According to available information, there is a significant relationship between the ploidy level and essential oil ...
Abbas Gholipour
doaj   +1 more source

CYTOGENETICS OF CHILEAN LAND PLANTS (EMBRYOPHYTA): STATE-OF-THE-ART AND PROSPECTS [PDF]

open access: yesBAG. Journal of Basic and Applied Genetics, 2022
Chile is located in the south-western region of South America along the Pacific Ocean and contributes to the worldwide flora with ca. 6,120 species of Bryophyta, Pteridophyta, Pinophyta, Gnetophyta, and Magnoliophyta (1.9% of worldwide total species ...
Jara Seguel P., Urrutia Estrada J.
doaj   +1 more source

CHROMOSOME SET AND SOME PROBLEMS OF CANIS AUREUS IN CAUCASICA

open access: yesЮг России: экология, развитие, 2014
For the first time in the present resort chromosome set and some problems of Canis aureus ecology is described taking into account the structure of hail high altitude zone of mountain ecosystem.
R. I. Dzuev   +2 more
doaj   +1 more source

Cladogenetic and Anagenetic Models of Chromosome Number Evolution: a Bayesian Model Averaging Approach

open access: yesbioRxiv, 2016
Chromosome number is a key feature of the higher-order organization of the genome, and changes in chromosome number play a fundamental role in evolution.
William A. Freyman, S. Höhna
semanticscholar   +1 more source

Cyto-systematical study of the genus Senna Mill. in diverse geographical locations of Uttar Pradesh

open access: yesElectronic Journal of Plant Breeding, 2021
Senna Mill. is one of the most typical genus of caesalpiniodeae, with wide geographical distribution and diversification. The research work was planned with an objective of taxonomical characterization and assessment of the meiotic behaviour of wild ...
Girjesh Kumar, Kaushal Tripathi* and Moni Mishra
doaj   +1 more source

Evolutionary implications of heterochromatin and rDNA in chromosome number and genome size changes during dysploidy: A case study in Reichardia genus

open access: yesPLoS ONE, 2017
In this study we showed that constitutive heterochromatin, GC-rich DNA and rDNA are implicated in chromosomal rearrangements during the basic chromosome number changing (dysploidy) in Reichardia genus.
S. Siljak-Yakovlev   +5 more
semanticscholar   +1 more source

Chromosome counts of some Zingiberaceous species from Thailand [PDF]

open access: yesSongklanakarin Journal of Science and Technology (SJST), 2002
The data on chromosome numbers of 22 species belonging to 10 genera of Zingiberaceae distributed in Thailand were investigated. The somatic numbers range from 20 to 48 showing diploidy and polyploidy.
Ladda Eksomtramage   +3 more
doaj  

Circumnutation in the growth of Chara rhizoids

open access: yesActa Societatis Botanicorum Poloniae, 2014
The chromosome numbers of 24 species of Achillea L. were determined, among them 4 for the first time (A. chamaemelifolia, A. sulphurea, A. teretifolia, A. vermicularis). A tetraploid form of A. lingulata was found for the first time. The occurrence of di-
Janina Dąbrowska
doaj   +1 more source

The Impact of Reconstruction Methods, Phylogenetic Uncertainty and Branch Lengths on Inference of Chromosome Number Evolution in American Daisies (Melampodium, Asteraceae)

open access: yesPLoS ONE, 2016
Chromosome number change (polyploidy and dysploidy) plays an important role in plant diversification and speciation. Investigating chromosome number evolution commonly entails ancestral state reconstruction performed within a phylogenetic framework ...
Jamie McCann   +4 more
semanticscholar   +1 more source

Problematic octaploid forms and a new chromosome number in the genus Achillea L., 2n = 126

open access: yesActa Societatis Botanicorum Poloniae, 2014
Among the offspring of a problematic form of Achillea sp., a 2n = 126 seedling which probably arose as the result of fusion of unreduced octo- and hexaploid gametes (72 + 54) was found along with seedlings having an octaploid chromosome number (2n = 72).
Janina Dąbrowska
doaj   +1 more source

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