Results 71 to 80 of about 2,842 (213)

Aperture Pattern and Microsporogenesis in Asparagales

Aliso, 2006
The aperture pattern of pollen grains is a character defined as the number, shape, and position of apertures. Although this character is highly variable in angiosperms, two states are particularly widespread. Pollen grains with one polar aperture occur frequently in basal angiosperms and monocots while tricolpate pollen is a synapomorphy of the ...
Nadot, Sophie, Penet, Laurent, Dreyer, Leanne, Forchioni, Arlette, Ressayre, Adrienne   +4 more
openaire   +3 more sources

The creation of new aneuploid lines of the cotton (Gossypium hirsutum L.) with identification of chromosomes by translocation and SSR-markers

Вавиловский журнал генетики и селекции, 2016
The use of monosomic lines significantly increases the effectiveness of molecular-genetic analysis and the development of superior quality breeding lines via substitutions by alien chromosomes.
M. F. Sanamyan, Sh. U. Bobokhujaev, A. X. Makamov, S. G. Achilov, I. Y. Abdurakhmonov   +4 more
doaj   +1 more source

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)

Ciência 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, Andréia Rodrigues Alonso Pereira, Sara Mataroli de Godoy, Neusa Maria Colauto Stenzel, Claudicéia Risso-Pascotto   +4 more
doaj  

Actin filaments drive spindle positioning in Arabidopsis meiosis II

New Phytologist, Volume 248, Issue 5, Page 2187-2191, December 2025.
Yingrui Ma, Hua Jiang
wiley   +1 more source

Influence of cytoplasmic-nuclear male sterility systems on microsporogenesis in pearl millet (Pennisetum glaucum (L.) R. Br.) [PDF]

, 1997
Influence of a range of cytoplasms on microsporogenesis and anther development in pearl millet was studied using six isonuclear A-lines having five cytoplasms (A1, A2, A3, A4 and Av) and the nuclear genome of 81B.
Chhabra, A K, Hash, C T, Murthy, A K, Khairwal, I S, Rai, K N   +4 more
core   +1 more source

Selective cell elimination during microsporogenesis in sedges

, 2000
The underlying mechanisms responsible for elimination of three of the four meiotic products during microsporogenesis in sedges have remained obscure.
Ranganath, R.M., Rao Nagashree, N.
core   +1 more source

Contributions to the floral morphology and embryology of Pavetta gardeniifolia A. Rich. Part 3. Microsporogenesis and pollen structure [PDF]

, 1982
The anther wall development as well as microsporogenesis in Pavetta gardeniifolia is described. The microspore mother cells as well as the individual microspores in the tetrahedral tetrads are enveloped in callose walls.
van der Merwe, C.F., Robbertse, P.J., von Teichman, Irmgard   +2 more
core   +1 more source

Reproductive studies on ipecac (Cephaelis ipecacuanha (Brot.) A. Rich; Rubiaceae): meiotic behavior and pollen viability

Brazilian Journal of Biology
Reproductive studies were carried out on Brazilian accessions of ipecac, Cephaelis ipecacuanha. Meiotic behavior was studied using the squashing technique.
M. M. Souza, E. R. Martins, T. N. S. Pereira, L. O. Oliveira   +3 more
doaj   +1 more source

Reproductive studies in ipecac (Psychotria ipecacuanha (Brot.) stockes; Rubiaceae): pollen development and morphology

Brazilian Archives of Biology and Technology, 2008
The aim of this work was to carry out the reproductive studies on Brazilian accessions of ipecac, Psychotria ipecacuanha. It presented heterostyly, with brevistylous and longistylous flowers.
Margarete Magalhães Souza, Ernane Ronie Martins, Telma Nair Santana Pereira, Luiz Orlando de Oliveira   +3 more
doaj   +1 more source

Relação entre os estádios de desenvolvimento dos micrósporos e as características morfológicas do botão floral em pimentão (Capsicum annuum L.) Relationship among the development stages of microspores and the morphological characteristics of the floral bud in sweet pepper (Capsicum annuum L.)

Ciência Rural, 1995
Vários fatores influenciam a cultura de anteras, entre eles, o estádio de desenvolvimento dos micros poros. O presente estudo teve por objetivo verificar a relação entre o estádio de desenvolvimento dos micrósporos com algumas características ...
José Magno Queiroz Luz, Renata Silva, Lisete Chamma Davide, José Eduardo Brasil Pereira Pinto   +3 more
doaj   +1 more source