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- Title
Specific features of microsporogenesis in the Siberian larch growing under the conditions of technogenic load.
- Authors
Romanova, L.; Tret’yakova, I.
- Abstract
Studies of microsporogenesis in the Siberian larch growing in Krasnoyarsk and its suburbs have shown that meiosis starts in October. Microsporocytes winter at prophase I (leptoneme, diploneme). Reduction divisions in male generative buds are resumed and terminated in spring, in March. However, in the case of thaws during the autumn-winter period, meiotic division proceeds in the larch buds and this leads to the formation of degrading tetrads and pollen. Hence, the organic quiescence is absent in the larch in winter. It was shown that in the larch growing in the city, meiosis proceed more asynchronously than in the background tree stands. An increase of chromosomal aberrations during the reduction division was noted under the conditions of technogenic pollution.
- Subjects
KARYOKINESIS; BUDDING (Plant propagation); BUDWOOD; SIBERIAN larch; FALL foliage; POLLINARIA
- Publication
Russian Journal of Developmental Biology, 2005, Vol 36, Issue 2, p99
- ISSN
1062-3604
- Publication type
Article
- DOI
10.1007/s11174-005-0017-7