Results 71 to 80 of about 7,443 (246)

Anther culture for haploid and doubled haploid production [PDF]

Plant Cell, Tissue and Organ Culture (PCTOC), 2010
Haploids are plants with a gametophytic chromosome number and doubled haploids are haploids that have undergone chromosome duplication. The production of haploids and doubled haploids (DHs) through gametic embryogenesis allows a single-step development of complete homozygous lines from heterozygous parents, shortening the time required to produce ...
openaire   +1 more source

Tipping the Scales Using Cryopreservation: Modelling the Genetic Value and Management Potential of Integrated Cryopreservation for Threatened Ex‐Situ Pupfish Populations

Animal Conservation, EarlyView.
This graphical abstract depicts the number of additional fish that would be required to achieve 90% genetic diversity for endangered pupfish species housed in EAZA collections, with or without the use of cryopreserved material. ABSTRACT Zoos and aquaria must retain genetic diversity for the species they house if the populations are to remain viable ...
James Edward Brereton, Susan L. Walker, Andrew Mooney, Pedro Machado, Elmar Fienieg, Elena Hunter   +5 more
wiley   +1 more source

Haploid embryogenesis

, 2015
A switch to haploid embryogenesis is controlled by the activity of histone deacetylases (HDACs). Blocking HDAC activity with HDAC inhibitors (HDACi), e.g. trichostatin A (TSA), inBrassica napus, B. rapa, B. oleracea, Arabidopsis thalianaandCapsicum annuummale gametophytes leads to a large increase in the proportion of cells that undergo embryogenic ...
Boutilier, Kimberly, Angenent, Gerrit Cornelis, Soriano Castan, Mercedes, Hui, Li   +3 more
openaire   +9 more sources

The use of deidentified organ donor testes for research

Andrology, EarlyView.
Abstract Our knowledge of testis development and function mainly comes from research using mammalian model organisms, primarily the mouse. However, there are integral differences between men and other mammalian species regarding cellular composition and expression profiles during fetal and post‐natal testis development and in the mature testis ...
Marina V. Pryzhkova, Marnie W. Skinner, Juliana I. Candelaria, Stephen R. Wellard, Philip W. Jordan   +4 more
wiley   +1 more source

Sperm Head–Tail Coupling Apparatus Diversity and Common Themes Among Species

Andrology, EarlyView.
ABSTRACT Background A stable connection between the sperm head (containing the nucleus and acrosome) and tail (containing the axoneme, mitochondrial sheath, and periaxonemal structures) is critical for fertility. This connection is mediated by a series of nuclear, cytoplasmic, and centriole components that make up the head–tail coupling apparatus (HTCA)
Danielle B. Buglak, Brian J. Galletta, Nasser M. Rusan   +2 more
wiley   +1 more source

Effect of parental genotypes on haploid embryo formation in wheat x maize hybridization [PDF]

Selekcija i Semenarstvo, 2005
Wheat x maize hybridization method is an efficient and frequently used system for production of haploids in wheat. With the intention of further improving the efficiency of this method, the aim of this work was to analyze the influence of wheat genotype,
Kondić-Špika Ankica, Kobiljski Borislav   +1 more
doaj  

Production of wheat-doubled haploids resistant to eyespot supported by marker-assisted selection

Electronic Journal of Biotechnology, 2019
Background: Wheat is one of the most important crops cultivated all over the world. New high-yielding cultivars that are more resistant to fungal diseases have been permanently developed.
Halina Wiśniewska, Maciej Majka, Michał Kwiatek, Magdalena Gawłowska, Maria Surma, Tadeusz Adamski, Zygmunt Kaczmarek, Tadeusz Drzazga, Bogusława Ługowska, Marek Korbas, Jolanta Belter   +10 more
doaj   +1 more source

Anatomical and Histological Structures of the Male Reproductive System of Chalcophora mariana (Linnaeus, 1758) (Coleoptera: Buprestidae): Light and Scanning Electron Microscopy Study

Acta Zoologica, EarlyView.
ABSTRACT This study presents the first detailed morphological analysis of the male reproductive system of Chalcophora mariana (Linnaeus, 1758) using stereo microscopy, light microscopy, and scanning electron microscopy. The male reproductive system of C.
Hicret Arslan, Selami Candan
wiley   +1 more source

Anatomical and Histological Descriptions of the Male Reproductive System of the Alfalfa Weevil of Hypera postica (Gyllenhal, 1813) (Coleoptera: Curculionidae) Using Light and Scanning Electron Microscopies

Acta Zoologica, EarlyView.
ABSTRACT Features of the reproductive organs, such as the number of testicular follicles, testis colour and the morphology of the glands, can be used as systematic characters. For this purpose, this paper was the first description of the male reproductive system anatomy and histology of Hypera postica (Gyllenhal, 1813) (Coleoptera: Curculionidae), a ...
Nurcan Özyurt Koçakoğlu, Selami Candan, Hicret Arslan, Mustafa Güllü   +3 more
wiley   +1 more source

Androgenesis and gynogenesis in tomato (Solanum lycopersicum L.) in vitro

Труды по прикладной ботанике, генетике и селекции
Tomato (Solanum lycopersicum L.) is one of the most consumed vegetable crops worldwide. Tomato fruits are rich in vitamins, minerals, and pigments, including lycopene.
A. A. Shergina, A. B. Kurina
doaj   +1 more source