Results 101 to 110 of about 5,131 (204)

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

Cytoplasniic differentiation during microsporogenesis in higher plants

Acta Societatis Botanicorum Poloniae, 2014
Conspicuous cytoplasmic dedifferentiation in the pollen mother cells takes place early in the meiotic prophase of many plants. This event involves the removal of much of the cytoplasmic RNA. and the differentiation of both plastids and mitochondria to approaching the sole expression of their genomes. Much of the RNA removed from the cytoplasm passes to
openaire   +5 more sources

Cytogenetic data about some Brazilian accessions of Paspalum. [PDF]

, 2011
Resum
BATISTA, L. A. R., CARRARO, L. R., FREITAS, P. M. de, PAGLIARINI, M. S., SILVA, N.   +4 more
core  

Rice cold tolerance at the reproductive stage in a controlled environment Tolerância ao frio do arroz no estádio reprodutivo sob condições controladas

Scientia Agricola, 2006
Cold tolerance of rice (Oryza sativa L.) during the reproductive stage is important to guarantee high yield under low temperature environments. Field selection, however, does not allow identification of adequate tolerance sources and limits selection of ...
Renata Pereira da Cruz, Sandra Cristina Kothe Milach, Luiz Carlos Federizzi   +2 more
doaj   +1 more source

Optical and ultrastructural study of the pollen grain development in hermaphrodite papaya tree (Carica papaya L.)

Brazilian Archives of Biology and Technology, 2008
The objective of this study was to describe the pollen grain development in hermaphrodite papaya tree. The flower buds were collected at different stages of the development and the anthers were treated chemically for observation under optical and ...
Lídia Márcia Silva Santos, Telma Nair Santana Pereira, Margarete Magalhães de Souza, Pedro Correa Damasceno Junior, Fabiane Rabelo da Costa, Beatriz Ferreira Ribeiro, Noil Gomes de Freitas, Messias Gonzaga Pereira   +7 more
doaj   +1 more source

Histone modifications during tobacco male meiosis

Biologia Plantarum, 2019
The special and temporal distribution of several posttranslational histone modifications (H3K4me2, H3K4me3, H3K9me2, H3K27me2, H3K9ac, H3K14ac, H3K18ac, H3K27ac, H3S10ph, H3S28ph, H3T3ph, H3K4me1-H3T3ph, H3K4me3/H3T3ph H3T11ph, H2AT121ph, and H2A.XS139ph)
S. MURSALIMOV, E. DEINEKO, A. HOUBEN, D. DEMIDOV   +3 more
doaj   +1 more source

High temperature injury and auxin biosynthesis in microsporogenesis

Frontiers in Plant Science, 2013
Plant reproductive development is more sensitive than vegetative growth to many environmental stresses. High temperature (HT) injury is becoming an increasingly serious problem due to recent global warming. In wheat, barley, and other crops, the early phase of anther development is most susceptible to HT.
openaire   +3 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)

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  

Using a wheat line with wild emmer genetic material to improve modern Triticum aestivum L. varieties by a complex of economically useful traits

Вавиловский журнал генетики и селекции
Wild emmer Triticum dicoccoides samples have a high content of protein and microelements in their grain, but when crossed with common wheat varieties, undesirable properties of a wild relative (low yield, spike fragility and difficult threshing) can be ...
O. A. Orlovskaya, K. K. Yatsevich, L. V. Milko, N. M. Kaznina, N. I. Dubovets, A. V. Kilchevsky   +5 more
doaj   +1 more source

Exposure of Tradescantia Microspores to Periodic Vibrations of 40-100 Hertz [PDF]

Spherical chromosomal fragments determined in exposure of Tradescantia microspores to periodic ...
Bales, L. J., Knepton, J. C., Jr.
core   +1 more source