Results 71 to 80 of about 79,615 (224)

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

open access: yesActa 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   +3 more
wiley   +1 more source

Development of database support for production of doubled haploids

open access: yes, 2002
In this project relational and Lotus Notes database technology are evaluated with regard to their suitability in providing computer-based support in plant breeding in general and specifically in the production of doubled haploids.
Engerberg, Malin
core   +2 more sources

Larval character evolution in Holometabola (Insecta)

open access: yesCladistics, EarlyView.
Abstract Larvae, a novel type of immature stage, are a crucial innovation of the Holometabola. Larval features therefore provide key evidence for reconstructing evolutionary transformations in this megadiverse group. Here we present the first formal reconstruction of larval character evolution, using maximum parsimony and Bayesian ancestral‐state ...
Rolf Georg Beutel, Jakub Goczał, Di Li
wiley   +1 more source

Present status of haploidy research in onion (Allium cepa) – A review

open access: yesThe Indian Journal of Agricultural Sciences, 2019
Research on haploid induction and their subsequent utilization in basic and genomic research and breeding is still at its infancy due to paucity of research efforts, difficulties in various critical steps, large genome size and limited publications ...
ANIL KHAR   +4 more
doaj   +1 more source

Ploidy‐Dependent Response to Anticancer Drugs of Human Embryonic Stem Cells

open access: yesCell Proliferation, EarlyView.
Using isogenic hESCs, differing only in their ploidy level, we show the effect of ploidy on the resistance to anticancer drugs. We demonstrate that polyploidy, by itself, confers sensitivity to chemotherapies, leading to higher apoptosis and delayed proliferation, while the loss of p53 reverses the phenotype, demonstrating higher resistance.
Guy Haim‐Abadi, Nissim Benvenisty
wiley   +1 more source

Vibratome Sectioning and Clearing for Easing Studies of Cassava Embryo Formation

open access: yesFrontiers in Plant Science, 2020
This work describes the application of clearing on vibratome sections to study the embryo formation in cassava. This procedure provides high-resolution images and reduces significantly the number of sections that need to be analyzed per ovule.
Zaida Lentini   +2 more
doaj   +1 more source

GSK3α‐mediated regulation of the RNA demethylase fat mass and obesity‐associated protein (FTO) during murine spermatogenesis

open access: yesThe FEBS Journal, EarlyView.
FTO regulates mRNA stability and translational efficiency through its m6A‐demethylation activity. GSK3 functions as an upstream regulator of FTO, leading to its inhibition via phosphorylation. In male germ cells, FTO activity is kept in check by GSK3α.
Neha Choudhari   +7 more
wiley   +1 more source

An efficient and easy-to-use protocol for induction of haploids in cucumber through parthenogenic embryo development

open access: yesBotanical Studies
Background Cucumber (Cucumis sativus L.) is a model crop to study cell biology, including the development of haploids and doubled haploids in vegetable crops.
Pradeepkumara N   +7 more
doaj   +1 more source

Production of Doubled Haploids in Onion: A Review

open access: yesJournal of Horticultural Sciences, 2014
Onion suffers from high inbreeding depression and, as a result, inbreds that are developed lack genotypic and phenotypic uniformity. Gynogenesis has emerged as a potential strategy to address this drawback.
A S Dhatt, Prerna Thakur
doaj   +1 more source

Genome‐scale evidence for host‐associated lineage divergence in the parasitoid, Microctonus aethiopoides

open access: yesInsect Molecular Biology, EarlyView.
Host associations are primary drivers of genomic divergence, with clear phylogenetic separation observed between strains associated with Hypera and Sitona weevil hosts. Genomic diversity aligns with reproductive modes: sexually reproducing ancestral lineages maintain high heterozygosity, while derived asexual strains exhibit reduced heterozygosity and ...
Meeran Hussain   +3 more
wiley   +1 more source

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