Results 21 to 30 of about 759,542 (265)

First Cytogenetic Study Through Conventional Staining of The Ant Genus Blepharidatta Wheeler, 1915 (Hymenoptera: Formicidae: Attini)

open access: yesSociobiology, 2022
Blepharidatta is a rare Neotropical ant genus in the Attini tribe of the subfamily Myrmicinae. It has only four valid species and among them Blepharidatta delabiei was recently described and there is little knowledge on its biology.
Laís L. Lopes   +3 more
doaj   +1 more source

Ornithogalum insulare (Hyacinthaceae): A new species from the Cretan area (S. Aegean, Greece) [PDF]

open access: yesBotanica Serbica, 2018
Ornithogalum insulare collected from three offshore islets of Crete is described as a species new to science. It is illustrated and compared with other related species of the genus. Information regarding its chromosome number (2n = 44) and karyotype is
Zacharias Kypriotakis   +2 more
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

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

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

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  

Karyotype of native Zea mays ssp. mays Proto-Confite morocho

open access: yesActa Agronómica, 2018
Corn is a crop of great importance in the world since it constitutes a basic component of the diet of the population; a production of 1026.61 million tons was estimated during the present year. Currently, there are many theories about the wild ancestors
Segundo Eloy López-Medina   +4 more
doaj   +1 more source

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

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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