| Autor: |
Yumaguzhin, M., Fatkhutdinova, R. |
| Zdroj: |
Biology Bulletin; Jul2002, Vol. 29 Issue 4, p360-366, 7p |
| Abstrakt: |
We studied the pattern of embryo formation in wheat and buckwheat interspecific hybrids. Formation of nonreduced gametes in the embryo sac was induced by low temperature (4–7°C). Changed thermal conditions during meiosis proved to favor formation of hybrid embryos. Vital embryos have been obtained. Karyotypic analysis on the metaphase plates from the root meristem demonstrated different genotypes. Heterogeneous embryos caring both maternal and paternal chromosomes as well as the embryos caring solely maternal or paternal chromosomes have been revealed. Spermatozoa penetrate the embryo sac as a cell, which increases aminopeptidase activity. Sometimes low temperature induces formation of somatic embryos from nucellus cells in the plants. [ABSTRACT FROM AUTHOR] |
| Databáze: |
Complementary Index |
| Externí odkaz: |
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