Results 91 to 100 of about 35,869 (203)

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

Acta 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, Judith Viégas, João Baptista da Silva, Paula Fernanda Vaz de Ávila, Gustavo Rossato Busato, Jaqueline Schneider Lemes   +5 more
doaj   +1 more source

Effects of endocrine-disrupting chemical exposure on zebrafish ovarian follicles [PDF]

, 2017
The process of oocyte maturation involves both nuclear and cytoplasmic events that are essential for the production of viable eggs and subsequent fertilization in sexually reproducing animals.
D\u27Angelo, Josephine, Freeman, Edward A.   +1 more
core   +2 more sources

Meiotic Behavior and Pollen Viability of Spondias mombin L.: Native Fruit Species of the Amazon

Floresta e Ambiente
Spondias mombin L. is a fruit species native to the Amazon with great marketing potential. The aim of this study was to examine the meiotic behavior and pollen viability of S. mombin.
Kelli Évelin Müller Zortéa, Ana Aparecida Bandini Rossi, Rosimeire Barboza Bispo, Vinícius Delgado da Rocha, Eulalia Soler Sobreira Hoogerheide   +4 more
doaj   +1 more source

Study on the role of microtubules related to the nuclear behaviors during conjugation of paramecium caudatum [PDF]

, 2002
In most organisms, microtubules are involved in the migration of the pronuclei during fertilization. Fertilization process of Paramecium caudatum includes two stages of nuclear migration. One is a selection of meiotic products.
Nakajima Yuka, 仲島 由佳
core  

Meiotic behavior of Adesmia DC. (Leguminosae-Faboideae) species native to Rio Grande do Sul, Brazil

Genetics and Molecular Biology, 1998
Meiotic behavior in Adesmia DC. is described for the first time. The study encompassed twelve populations of seven Adesmia DC. species native to Rio Grande do Sul, Brazil. Populations with 2n = 2x = 20 are A. securigerifolia 9615, A.
Coelho Liliana Gressler May, Battistin Alice   +1 more
doaj  

Meiotic behavior and pollinic viability in bean cultivars

BIOCELL, 2014
The aims of this study were to determine the meiotic behavior and to estimate pollen grains via- bility in bean ( Phaseolus vulgaris L.) cultivars. Flower buds were collected during different developmental stages of the Mesoamerican bean cultivars IAPAR 44, Guapo Brilhante, BRS Expedito, BRS Valente, Guateian 6662 and Perola, and the Andean bean ...
Gracieli DALLA NORA, Solange Bosio TEDESCO, Tamara PASTORI, Viviane Dal-Souto FRESCURA, Nerin閕a Dalfollo RIBEIRO, Haywood Dail LAUGHINGHOUSE IV, Sidinei Jos�LOPES, Maria Teresa SCHIFINO-WITTMANN   +7 more
openaire   +1 more source

Evolution, Expression and Meiotic Behavior of Genes Involved in Chromosome Segregation of Monotremes. [PDF]

Genes (Basel), 2021
Pajpach F, Shearwin-Whyatt L, Grützner F.   +2 more
europepmc   +1 more source

Viabilidad de polen e irregularidades meióticas en una colección de stevia rebaudiana (Bertoni) Bertoni cultivada en Tucumán, Argentina [PDF]

, 2018
Stevia rebaudiana (Bertoni) Bertoni (2n=2x=22) (Asteraceae family) is a species of economic value due to the presence of steviol glycosides in leaves -mainly stevioside and rebaudioside A- which are non-caloric sugars.
Budeguer, Carlos Jorge, Camadro, Elsa Lucila, Erazzo, L. E.   +2 more
core  

A dynamic meiotic SUN belt includes the zygotene-stage telomere bouquet and is disrupted in chromosome segregation mutants of maize (Zea mays L.).

Frontiers in Plant Science, 2014
The nuclear envelope (NE) plays an essential role in meiotic telomere behavior and links the cytoplasm and nucleoplasm during homologous chromosome pairing and recombination in many eukaryotic species.
Shaun Patrick Murphy, Hardeep K Gumber, YunYun eMao, Hank W Bass, Hank W Bass   +4 more
doaj   +1 more source

Meiotic Behavior of Achiasmate Sex Chromosomes in the African Pygmy Mouse Mus mattheyi Offers New Insights into the Evolution of Sex Chromosome Pairing and Segregation in Mammals. [PDF]

Genes (Basel), 2021
Gil-Fernández A, Ribagorda M, Martín-Ruiz M, López-Jiménez P, Laguna T, Gómez R, Parra MT, Viera A, Veyrunes F, Page J.   +9 more
europepmc   +1 more source