biologia plantarum

International journal on Plant Life established by Bohumil Němec in 1959

Biologia plantarum 46:85-90, 2003 | DOI: 10.1023/A:1027337116408

Structural Modifications of the Female Gametophyte Induced by Temperature in Nicotiana tabacum

N. Enaleeva1, L. Lobanova1
1 Botanic Garden of Saratov State University, Saratov, Russia

Effect of environmental conditions on formation of Nicotiana tabacum L. megagametophyte was studied. It was established, that unfavorable temperatures can specifically modify the structure of embryo sacs (ES). At low temperature (9/5 °C), ES with a reduced number of cells or with egg-like synergide(s) can be formed; at high variable (40/25 °C) or constant (37 °C) temperatures, ES with excessive numbers of cells or with synergide-like egg cells arise. Total frequencies of the changed ES patterns varied from 8 up to 35 % per plant and depended on the plant genotype and conditions of exposure.

Keywords: abnormal megagametogenesis; embryo sac; tobacco
Subjects: embryo sac, structure; female gametophyte, temperature; gametophyte, female, temperature; megagametogenesis, abnormal; Nicotiana tabacum; tobacco, megagametophyte formation

Published: July 1, 2003  Show citation

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Enaleeva, N., & Lobanova, L. (2003). Structural Modifications of the Female Gametophyte Induced by Temperature in Nicotiana tabacum. Biologia plantarum, 46(1), 85-90. doi: 10.1023/A:1027337116408
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