Results 51 to 60 of about 35,869 (203)

Aberrant meiotic behavior in Agave tequilana Weber var. azul [PDF]

open access: yesBMC Plant Biology, 2002
Agave tequilana Weber var. azul, is the only one variety permitted by federal law in México to be used for tequila production which is the most popular contemporary alcoholic beverage made from agave and recognized worldwide. Despite the economic, genetic, and ornamental value of the plant, it has not been subjected to detailed cytogenetic research ...
Rodríguez-Garay Benjamin   +1 more
openaire   +3 more sources

Meiotic behavior and diploidy in Schinus terebinthifolia (Anacardiaceae)

open access: yesRodriguésia, 2021
Abstract The genus Schinus (Anacardiaceae) comprises 30 species found in Peru, Bolivia, Chile, Paraguay, Uruguay, Argentina and Brazil. Schinus terebinthifolia (Brazilian pepper tree) is socioeconomically important in the Brazilian state of Espírito Santo. Dried fruit is used as a pepper-like spice and natural populations are exploited.
Kamila Bernardi Izoton   +3 more
openaire   +4 more sources

Cytogenetic evaluation of chili (Capsicum spp., Solanaceae) genotypes cultivated in Valle del Cauca, Colombia

open access: yesActa Agronómica, 2017
The genus Capsicum comprises a large group of hot and sweet peppers, with different morphological varieties and degree of fruits pungency. Due to its active principles is widely used in cooking and in traditional medicine, being sold in large worldwide ...
Viviane de Souza Macedo   +4 more
doaj   +1 more source

Developmental changes in the histological structure of the testes, and testosterone profiles in male guinea fowls (Numida meleagris) [PDF]

open access: yes, 2017
Owing to the paucity of information on the reproductive biology of guinea fowls, a study involving a total of 66 males was conducted, and documented the developmental changes in histological structure of the testes of guinea cocks from hatching until ...
Abdul-Rahman, Iddriss I.   +2 more
core   +1 more source

Cytological and genome size data analyzed in a phylogenetic frame: Evolutionary implications concerning Sisyrinchium taxa (Iridaceae: Iridoideae)

open access: yesGenetics and Molecular Biology, 2018
Sisyrinchium is the largest genus of Iridaceae in the Americas and has the greatest amount of cytological data available. This study aimed at investigating how genomes evolved in this genus.
Paula Burchardt   +9 more
doaj   +1 more source

TRIP13PCH-2 promotes Mad2 localization to unattached kinetochores in the spindle checkpoint response. [PDF]

open access: yes, 2015
The spindle checkpoint acts during cell division to prevent aneuploidy, a hallmark of cancer. During checkpoint activation, Mad1 recruits Mad2 to kinetochores to generate a signal that delays anaphase onset.
Bhalla, Needhi   +3 more
core   +1 more source

Cytological characterization and allelism testing of anther developmental mutants identified in a screen of maize male sterile lines. [PDF]

open access: yes, 2013
Proper regulation of anther differentiation is crucial for producing functional pollen, and defects in or absence of any anther cell type result in male sterility.
Cande, William Zacheus   +7 more
core   +2 more sources

Meiotic analysis of the germoplasm of three medicinal species from Asteraceae family Análise meiótica do germoplasma de três espécies medicinais da família Asteraceae

open access: yesCiência Rural, 2008
Cytogenetic characterization was carried out on 12 accessions from Aster squamatus (Spreng.) Hieron., Pterocaulon polystachyum DC, and Solidago microglossa DC by studying their meiotic behavior and pollen viability.
Denise Olkoski   +3 more
doaj   +1 more source

Cytoembryological evaluation, meiotic behavior and pollen viability of Paspalum notatum tetraploidized plants [PDF]

open access: yesCrop Breeding and Applied Biotechnology, 2016
This study evaluated the mode of reproduction, the meiotic behavior and the pollen viability of three tetraploid plants (2n=4x=40) originated from somatic chromosome duplication of Paspalum notatum plants. The plant WKS 3 changed the mode of reproduction
Karine Cristina Krycki   +2 more
doaj   +1 more source

Telomeres cluster de novo before the initiation of synapsis: a three-dimensional spatial analysis of telomere positions before and during meiotic prophase. [PDF]

open access: yes, 1997
We have analyzed the progressive changes in the spatial distribution of telomeres during meiosis using three-dimensional, high resolution fluorescence microscopy.
Agard, DA   +4 more
core  

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