Results 11 to 20 of about 195 (82)

Índice meiótico e palinologia de cerejeira-do-mato (Eugenia involucrata DC-Myrtaceae) [PDF]

open access: yesRevista de Ciências Agroveterinárias, 2018
O índice meiótico e a palinologia foram realizados para a cerejeira-do-mato (Eugenia involucrata DC- Myrtaceae), uma espécie nativa do sul do Brasil que apresenta frutos que podem ser destinados à agroindústria, além de potencial biotecnológico devido às
Lohanna Baltar Pinto de Oliveira   +1 more
doaj   +3 more sources

Qualidade polínica, anormalidades meióticas e poliploidia emSisyrinchium commutatum (Iridaceae) [PDF]

open access: yesRodriguésia
ResumoO comportamento meiótico de Sisyrinchium commutatum (Iridaceae) foi avaliado e associado com a qualidade polínica observada em uma população do sudeste do Brasil.
Rubem Samuel de Avila Júnior   +2 more
doaj   +2 more sources

Chromosome stickiness during meiotic behavior analysis of Passiflora serrato-digitata L. (PassifloraCEAE) Aderência cromossômica durante a análise do comportamento meiótico de Passiflora serrato-digitata L (PassifloraCEAE) [PDF]

open access: yesCiência Rural, 2011
Almost 90% of species of the genus Passiflora are native to the American continent, with high commercial value due to the fact that some species are used for human food while others have ornamental and medical qualities.
Paulo Roberto Peres Kiihl   +4 more
doaj   +1 more source

Comportamento meiótico de espécies de Saccharum, inclusive da variedade brasileira SP80-3280 [PDF]

open access: yes, 2022
Modern cultivars of sugarcane (Saccharum spp.) are polyploids and accumulate aneuploidies as a result of domestication and their interspecific hybrid origin involving the domesticated species S. officinarum (\'noble cane\') and the wild S.
Oliveira, Gleicy Kelly de
core   +1 more source

Estabilidade genética em hibridizações interespecíficas de populações de trigo estimada por índice meiótico e viabilidade polínica [PDF]

open access: yes, 2021
The objective of this study was to evaluate genetic stability by determining the meiotic index (MI) and pollen viability in F1RC2 segregating populations, obtained by the crosses between wheat commercial cultivars and synthetic wheat, aimed at ...
Lima, Maria Imaculada Pontes Moreira   +5 more
core   +2 more sources

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

Cytogenetic studies in some species of Passiflora L. (Passifloraceae): a review emphasizing Brazilian species

open access: yesBrazilian Archives of Biology and Technology, 2008
The Passifloraceae is represented by species of tropical and subtropical origin. The Passiflora is the richest genus with approximately 450 species, 200 of them being native to Brazil. Recent karyological studies have reported the basic chromosome number
Margarete Magalhães Souza   +2 more
doaj   +1 more source

Estudo citogenético e viabilidade do pólen de Diatenopteryx sorbifolia Radlk. [PDF]

open access: yes, 2022
The number of chromosomes and the meiotic characterization are important to studies involving genetic variability, germplasm and biodiversity. However, native forest species have not been sufficiently analyzed from a cytotaxonomic point of view ...
Donazzolo, Joel   +4 more
core   +2 more sources

Chromosome number and microsporogenesis in Paspalum maritimum (caespitosa group; gramineae)

open access: yesBrazilian Archives of Biology and Technology, 2000
Despite of economic importance of the genus Paspalum, little or no cytologic information is available for many species. This is the first report about chromosome number and meiotic behavior for P. maritimum. The three accessions collected in Amapá State (
Eleniza de Victor Adamowski   +2 more
doaj   +1 more source

Botanical aspects of Heteropterys umbellata (Malpighiaceae): a cytological and palynological approach

open access: yesAnais da Academia Brasileira de Ciências, 2010
The genus Heteropterys is one of the major genera in Malpighiaceae. However, few cytological and palynological studies were reported. The present work described for the first time the chromosome number, heterochromatin pattern, meiotic behavior, pollen ...
Saulo M. Sousa   +5 more
doaj   +1 more source

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