Results 101 to 110 of about 5,168 (221)

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.)

open access: yesCiência 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   +3 more
doaj   +1 more source

Meiotic index in Myrtaceae native fruits trees from southern Brazil

open access: yesCrop Breeding and Applied Biotechnology, 2004
This work aimed to evaluate meiotic index in Myrtaceae species, native of southern Brazil. Flower buds were collected and stored in ethylic alcohol:propionic acid (2:1) until evaluation by the smear and squash technique with propionic carmin as a dye.
Rodrigo Cezar Franzon   +1 more
doaj  

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

open access: yesBrazilian 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   +7 more
doaj   +1 more source

Histone modifications during tobacco male meiosis

open access: yesBiologia 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   +3 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)

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  

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

open access: yes, 2011
Resum
BATISTA, L. A. R.   +4 more
core  

Male gametogenesis in flowering plants

open access: yesFrontiers in Sustainable Food Systems
The life cycles of plants are characterized by significant alternations between the diploid sporophytic and the haploid gametophytic generations. Meiosis and fertilization are the prerequisites for achieving the alternation of generations.
Dan-Lu Cui   +5 more
doaj   +1 more source

Floral morphology and embryological features of anther development in Renanthera imschootiana

open access: yesGuangxi Zhiwu
There are few data on the rare and endangered orchids of Renanthera Lour. Floral morphology and embryological features of anther development in R. imschootiana were investigated, and the taxonomic significance of R. imschootiana was analyzed by comparing
WANG Yuecheng   +5 more
doaj   +1 more source

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

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

Cloning and expression analysis of glucanase genes from Phytophthora cinnamomi [PDF]

open access: yes, 2010
Phytophthora cinnamomi is a soil-borne pseudofungus belonging to the Class Oomycetes or „water moulds' in the Kingdom Chromista (Figure 1). Is one among the most destructive species of Phytophthora associated to the decline of forestry, ornamental ...
Choupina, Altino   +5 more
core  

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