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.
32.
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.
33.
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.
34.
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.
35.
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.
36.
"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.
37.
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.
38.
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.
39.
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 ".
40.
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 .)
