Akhalkatsi, Maia და Gvaladze, Guranda და Gachechiladze, Mzia (2004) Relationships between structure of the reproductive organs and the life cycle in the family Gentianaceae. Bulletin of the Georgian National Academy of Sciences, 170 (1). С. 125-129. ISSN 0132 - 1447
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ტექსტი
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რეზიუმე
Gentiana angulosa, G. cruciata, G. pontica, G. pyrenaica, G. septemfida and Gentianopsis blepharophora have anatropous ovules, reduced antipodals and prolonged seed maturation period (30-40 days). Gentianella caucasea, G. germanica (with hemitropous ovules) and Swertia iberica (with ana-campilotropous ovule) are characterized by proliferated antipodals and rapid seed development (less than 25 days). Proliferated antipodals accelerate embryogenesis by substituting for the function of the endosperm in the early stages and promote rapid seed development. The structural differences of ovule and embryo sac may determine duration of the life cycle, which may stipulate for development of a specific adaptation to the severe environmental conditions due to the shortening of a life cycle and origin of annual ephemers well adapted to the cold and arid climate of alpine environment.
| ობიექტის ტიპი: | სტატია |
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| თემატიკა: | Q Science > QK Botany |
| განმათავსებელი მომხმარებელი: | Prof.Dr. Maia Akhalkatsi |
| განთავსების თარიღი: | 24 თებერვალი 2014 07:51 |
| ბოლო ცვლილება: | 24 თებერვალი 2014 07:51 |
| URI: | http://eprints.iliauni.edu.ge/id/eprint/1172 |
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