Results 91 to 100 of about 18,943 (253)

Brazilian Society of Plant Breeding. Printed in Brazil Meiotic behavior of wild Caricaceae species potentially suitable for papaya improvement

open access: yes, 2020
-The purpose of this study was to evaluate the meiotic behavior and determine the meiotic index ...
Telma N S Pereira   +3 more
core  

Meiotic behavior of a tiny fragment chromosome that carries a transposed centromere

open access: yes, 1987
A supernumerary, tiny chromosome with a transposed centromere, in an apparently normal maize background, was observed through meiotic stages from pachytene through anaphase II.
Majorie P. Maguire
core   +1 more source

The mitochondrial DNA copy number and ovary‐related reproductive disorders: A bidirectional two‐sample Mendelian randomization study

open access: yesInternational Journal of Gynecology &Obstetrics, Volume 169, Issue 1, Page 112-120, April 2025.
Abstract Objective In the present study, a bidirectional two‐sample Mendelian randomization approach was utilized to explore potential causal relationships between mitochondrial DNA copy number (mtDNA‐CN) and ovary‐related reproductive disorders (ORRDs), including ovarian dysfunction, ovarian cyst, polycystic ovary syndrome (PCOS), premature ovarian ...
Ke Peng   +4 more
wiley   +1 more source

Citogenética de especies de Vasconcellea (Caricaceae) Cytogenetic of Vasconcellea species (Caricaceae)

open access: yesActa Agronómica, 2008
Conocer aspectos básicos de la citogenética de las papayas de montaña o papayuelas, especies del género Vasconcellea (Caricaceae) originarias de Ecuador y Colombia, fue el objetivo del trabajo.
Creucí Maria Caetano   +4 more
doaj  

First report on meiotic behavior of chromosomes in three species of subfamily Pentatominae (Pentatomidae: Heteroptera)

open access: yes, 2015
Kaur, Harbhajan, Sharma, Kanu (2015): First report on meiotic behavior of chromosomes in three species of subfamily Pentatominae (Pentatomidae: Heteroptera).
Kaur, Harbhajan, Sharma, Kanu
core   +1 more source

Impact of Methylparaben on Cumulus Cell DNA Integrity and Porcine Oocyte Developmental Competence In Vitro

open access: yesJournal of Applied Toxicology, EarlyView.
ABSTRACT Parabens (PBs) are compounds widely used as preservatives in personal care products, food, and pharmaceuticals. Methylparaben (MePB) is the most used by different industries due to its chemical properties and low cost. The high daily human exposure to these compounds has raised concerns about their potential effects on health, particularly on ...
Yenny Ramírez‐Jara   +11 more
wiley   +1 more source

Variation of microsporogenesis in sexual, apomictic and recombinant plants of Poa pratensis L

open access: yesCaryologia, 2022
Apomixis is a rather widespread phenomenon in plants. It is defined as the asexual formation of a seed from the maternal tissues of the ovule, avoiding the processes of meiosis and fertilization.
Egizia Falistocco   +5 more
doaj  

Toxic Effects of Bisphenol A and Its Analogs on Ovarian Structure and Function: A Narrative Review of Ovary‐Focused Studies

open access: yesJournal of Applied Toxicology, EarlyView.
ABSTRACT Bisphenol A (BPA) is a widely used industrial chemical found in polycarbonate plastics and epoxy resins and is recognized for its endocrine‐disrupting properties. Human exposure is common due to its presence in food packaging and everyday products. As BPA use has been restricted, structurally similar compounds such as BPS, BPB, BPAF, and BADGE
Nurbanu Zengin   +4 more
wiley   +1 more source

Meiose e viabilidade polínica na família Araceae Meiosis and pollen viability in Araceae family

open access: yesActa Botânica Brasílica, 2005
O objetivo deste trabalho foi analisar a microsporogênese e a viabilidade dos grãos de pólen em 17 espécies de aráceas coletadas no Rio Grande do Sul, Brasil.
Maria Goreti Senna Corrêa   +5 more
doaj   +1 more source

Meiotic behavior in tetraploid populations of Pfaffia tuberosa (Amaranthaceae)

open access: yes, 2004
Four populations of Pfaffia tuberosa, the Brazilian ginseng, collected in the central region of the state of Rio Grande do Sul (Brazil) were cytologically analyzed for meiotic behavior.
Pagliarini, M.S.   +3 more
core  

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