apomictic वाक्य
उदाहरण वाक्य
मोबाइल
- Similar slow progress has occurred at the project in Mexico, where scientists started by crossing corn with tripsacum, a wild relative that was naturally apomictic.
- This results in an uncertainty in the number of species contained in each of these genera, due to the difficulty of dividing apomictic complexes into species.
- The catalogue contains separate entries for every species ( including microspecies for all apomictic groups ), as well as separate entries for all subspecies and interspecific hybrids.
- His last book, " Interspecific Hybrid Derivatives Between Facultatively Apomictic Species of Bluegrasses & Their Responses to Contrasting Environments ", was published in 1982.
- However, the timing of the various developmental processes is critical to successful development of an apomictic seed, and the timing can be affected by multiple genetic factors.
- In plants with both apomictic and meiotic embryology, the proportion of the different types can differ at different times of year, and photoperiod can also change the proportion.
- Pseudogamy occurs in some plants that have apomictic seeds, where pollination is often needed to initiate embryo growth, though the pollen contributes no genetic material to the developing offspring.
- It appears unlikely that there are any truly completely apomictic plants, as low rates of sexual reproduction have been found in several species that were previously thought to be entirely apomictic.
- It appears unlikely that there are any truly completely apomictic plants, as low rates of sexual reproduction have been found in several species that were previously thought to be entirely apomictic.
- They are native throughout the cool temperate regions of the Northern Hemisphere, with the highest species diversity in the mountains of western China and the Himalaya, where numerous apomictic microspecies occur.
- By contrast, autonomous apomixis is the rule among the many apomictic species of Asteraceae including the common dandelion " Taraxacum officinale ", and also occurs in several genera of Poaceae.
- Dr . John G . Carman, a professor of plant genetics at Utah State University, is trying to achieve apomixis by crossing two plant varieties, neither of which is apomictic by itself.
- Most sexually reproducing organisms are diploid, with paired chromosomes, but doubling of their chromosome number may occur due to errors in Common dandelion is a triploid that produces viable seeds by apomictic seed.
- While not doing apomixis research on its own, his company is providing money and technology for Hanna's work in Georgia and for a project in Mexico that is trying to develop apomictic corn.
- The former differs in being a larger tree ( to 15 m ) with stouter shoots and larger leaves, the latter in having pale pink fruit; both are tetraploid apomictic species which breed true.
- "It's the challenger to the terminator technology, " said Dr . Stephen L . Goldman, a professor of biology at the University of Toledo, who is working to create apomictic corn.
- A team at the International Center for Maize and Wheat Improvement near Mexico City, which has been working on an apomictic relative of maize called Tripsacum, has recently found a gene that might be responsible for apomixis.
- It is closely related to " Sorbus oligodonta ", which differs in having the leaves less glaucous with the leaflets broadest near the apex, and pink fruit; Both are tetraploid apomictic species which breed true without pollination.
- Morphological evidence suggests that " Boechera tularensis " is an apomictic species that contains three different genomes, one each from " B . rectissima, B . retrofracta ", and " B . stricta ".
- Hanna crossed pearl millet, a crop used mostly for cattle in the United States but grown for human food in Africa and India, with a wild relative that is naturally apomictic . ( Although the wild relative does not need a partner to reproduce, its pollen can be used to fertilize a sexually reproducing plant .)
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