Results 51 to 60 of about 929 (182)
Attempted Induction of Gynogenesis in Chickens
Poultry Science, 1975 Dark Cornish and White Leghorn hens were divided into a virgin group and a group inseminated with semen that had been irradiated with 5,000r. of X rays. Two replicate trials were performed, one during winter and the second during summer. Two parthenogenetic embryos were found among 1,417 virgin eggs incubated for 24 hours. No other development was seen
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Sexual conflict as a constraint on asexual reproduction: an empirical review
Biological Reviews, Volume 100, Issue 6, Page 2681-2706, December 2025.ABSTRACT Theory predicts that facultatively asexual animals, which can leverage the advantages of both sexual and asexual reproduction, should outcompete obligately sexual and obligately asexual animals. Yet, paradoxically, obligate sexual reproduction predominates in many animal lineages, while the most flexible form of facultative asexuality (i.e ...
Daniela Wilner +2 more
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Factors increasing the efficiency of sugar beet gynogenesis in vitro culture
Журнал биологических наук и сельского хозяйстваThe aim of this article is to systematize the factors determining the efficiency of sugar beet gynogenesis and to substantiate a scheme for experimental testing of conditions for producing haploid and doubled haploid plants. The study analyzed literature
A.Yu. Magala, I.V. Arinicheva
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Niche partitioning among sexual and unisexual Ambystoma salamanders
Ecosphere, 2016 Organisms that have ecologically similar sexual and asexual forms present an evolutionary puzzle, as theory predicts that eventually one form should eliminate the other.
Katherine R. Greenwald +2 more
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Evolutionary Applications, 2020 Wild, asexual, vertebrate hybrids have many characteristics that make them good model systems for studying how genomes evolve and epigenetic modifications influence animal physiology.
Anne C. Dalziel +6 more
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Овощи России, 2022 Relevance. The induction of gynogenic development of the culture of unpollinated ovules of Cucumis sativus L., as a part of solid nutrient media agar-agar or Phytagel™ are used as a gelling agent.
S. N. Belov
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Twenty years of cucurbit breeding research at the World Vegetable Center
Crop Science, Volume 65, Issue 6, November/December 2025.Abstract The contribution of cucurbit crops to global food and nutrition security is immense. They are economically and nutritionally important to smallholder farmers in Asia, who account for 81% of global cucurbit production. World Vegetable Center (WorldVeg) has been focused for 20 years on four species: bitter gourd (Momordica charantia), ridge ...
Narinder Pal Singh Dhillon
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Овощи России, 2022 Relevance. To create an effective technology for obtaining doubled haploids (DH-technology) of zucchini in unpollinatedseedpod culture in vitro it is necessary to select the optimal values of many factors, the degree of influence of each of which on ...
A. S. Ermolaev, E. A. Domblides
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Овощи России, 2015 The role of plant extracts in the process of induction of embryogenic structures and its following development in plants is revealed. Thus, the addition in the culture medium of the extracts diluted in DMSO increases the rate of gynoand androgenesis on 2.
R. N. Kirakosyan +2 more
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Efficiency of the use for doubled haploids in onion breeding (Allium cepa L.)
Овощи России, 2022 Relevance. In onion breeding, quickly obtain aligned material is an urgent target for create parent forms of heterosis hybrids. Using classical methods with helping of backcrosses, this is achieved in 10-12 years. Using the technology of doubled haploids,
E. A. Cherednichenko +4 more
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