Results 201 to 210 of about 16,162 (247)
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2013
The review summarizes hybrid sterility as the best studied example of reproductive isolation between closely related species. On the model of infertile hybrids of two domestic mouse subspecies, Mus musculus musculus and Mus musculus domesticus, we have demonstrated interaction of hybrid sterility genes with epigenetic control of transcriptional ...
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The review summarizes hybrid sterility as the best studied example of reproductive isolation between closely related species. On the model of infertile hybrids of two domestic mouse subspecies, Mus musculus musculus and Mus musculus domesticus, we have demonstrated interaction of hybrid sterility genes with epigenetic control of transcriptional ...
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Trends in Genetics, 1996
The sterility of hybrids between various mouse species follows Haldane's rule by affecting only the males. Hitherto, five hybrid sterility (Hst) loci have been identified in the mouse genome. Haldane's rule holds also for chromosomal sterility in all studied mammalian species, including man.
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The sterility of hybrids between various mouse species follows Haldane's rule by affecting only the males. Hitherto, five hybrid sterility (Hst) loci have been identified in the mouse genome. Haldane's rule holds also for chromosomal sterility in all studied mammalian species, including man.
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Hybrid sterility in meadowlarks
Nature, 1979THE eastern meadowlark (Sturnella magna) and western meadowlark (S. neglecta) are sibling species of songbirds in secondary contact throughout a narrow zone of sympatry in central North America1–3. Field studies suggest that specific differences in vocalisations are the principal isolating mechanism and that hybridisation is limited in extent and ...
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On sterile and hybrid pheasants
Journal of Genetics, 19131. Evidence is brought forward to show that the sterility of the male and female hybrid pheasants is due to abnormalities occurring at the synapsis stage of the reduction division. 2. The spermatozoa of the hybrids are either deformed, with chromatic beads and thickenings on them, or else of abnormal size, double-sized spermatozoa being ...
Geoffrey Smith, Haig Thomas
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Nature, 1938
IT is a remarkable fact that the disturbances connected with genic sterility in hybrids between species (or races) are paralleled within species by similar disturbances caused by single genes. For example, there is an analogy between the asynaptic mutations in several plants and genic asynapsis in hybrids and likewise between the polymitotic mutation ...
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IT is a remarkable fact that the disturbances connected with genic sterility in hybrids between species (or races) are paralleled within species by similar disturbances caused by single genes. For example, there is an analogy between the asynaptic mutations in several plants and genic asynapsis in hybrids and likewise between the polymitotic mutation ...
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Molecular mechanisms of hybrid sterility in rice
Science China Life Sciences, 2019Hybrid sterility presents a major bottleneck in hybrid crop breeding and causes postzygotic reproductive isolation in speciation. Here, we summarize the current understanding of the genetics of rice hybrid sterility and highlight new advances in deciphering the molecular basis of the major genetic loci for hybrid sterility in rice.
Yongyao, Xie +3 more
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BREEDING ASSESSMENT OF STERILE TOBACCO HYBRIDS
Естественные и технические науки, 2021Коллекция источников цитоплазматической мужской стерильности на восьми цитоплазмах диких видов Nicotiana поддерживается в ФГБНУ ВНИИТТИ и используется для изучения взаимодействий ядерных и цитоплазматических детерминантов в разных генотипах растений табака.
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Hybrid sterility in plant: stories from rice
Current Opinion in Plant Biology, 2010Hybrid sterility is the most common form of postzygotic reproductive isolation in plants. The best-known example is perhaps the hybrid sterility between indica and japonica subspecies of Asian cultivated rice (Oryza sativa L.). Major progress has been reported recently in rice in identifying and cloning hybrid sterility genes at two loci regulating ...
Yidan, Ouyang +2 more
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Somatic hybridization in Petunia: A male sterile cytoplasmic hybrid
Plant Science Letters, 1979Abstract Fusion was induced between leaf mesophyll protoplasts of a cytoplasmic male sterile (cms) and a fertile petunia line. The selection system was designed to allow only the growth of protoplasts possessing the genome of the fertile line. The majority of plants which were regenerated from protoplasts were phenotypically similar to the fertile ...
S. Izhar, J.B. Power
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Male Sterilities and F1 Hybrids in Brassica
1992Many Brassica species are economically important as vegetables (B. oleracea, B. campestris, B. juncea), condiments (B. nigra, B. juncea), forages (B. oleracea, B. campestris, B. napus) and as sources of edible or industrial oil and meal (B. campestris, B. napus, B. juncea, B. carinata).
Renard, M. +9 more
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