Marioara Urda _Grebenisan_ rezumat_teza_engleza - USAMV Cluj ...
Marioara Urda _Grebenisan_ rezumat_teza_engleza - USAMV Cluj ...
Marioara Urda _Grebenisan_ rezumat_teza_engleza - USAMV Cluj ...
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<strong>Marioara</strong> GREBENIŞAN Summary of the PhD thesis<br />
Research on the structure of di- and tetraploid red clover seed plants and the influence of meiotic<br />
anomalies on the fertility of autotetraploid forms<br />
5.1.1. General view ……………………………………………...<br />
5.2. Material and method …………………………………………...<br />
5.3. Results and discussions ………………………………………...<br />
5.3.1. Testing pollen quality …………………………………….<br />
5.3.2. Testing germination, elongation and the indicator of<br />
in vitro pollen viability …………………………………...<br />
5.3.3. The growth of in vitro pollen tubes ………………………<br />
5.3.4. The growth of in vitro pollen tubes in detached pistils …..<br />
5.4. Embryogenesis in di- and tetraploid red clover ………………..<br />
5.4.1. General view ……………………………………………...<br />
5.5. Material and method …………………………………………...<br />
5.6. Results and discussions ………………………………………...<br />
5.6.1. Phases of embryogenesis …………………………………<br />
5.6.2. Comparative aspects regarding the fertility of di- and<br />
tetraploids ………………………………………………..<br />
CHAPTER VI<br />
6. The influence of meiotic anomalies on the fertility of autotetraploid<br />
forms of red clover …………………………………………………….<br />
6.1. Introduction …………………………………………………….<br />
6.2. Material and method …………………………………………...<br />
6.3. Meiosis and its consequences upon fertility …………………...<br />
6.3.1. Meiosis in the case of eutetraploids ………………………….<br />
6.3.2. The relationship between meiosis and fertility …………...<br />
6.4. Meiosis in the case of tetraploids ……………………………...<br />
6.5. Meiosis in the case of aneuploids ……………………………...<br />
6.5.1. The relationship between meiosis and fertility …………..<br />
CHAPTER VII<br />
7. The influence of haploid and diploid pollen in the fertilization process<br />
in red clover (Trifolium pratense L.) …………………………………<br />
7.1. General view …………………………………………………...<br />
7.2. Material and method …………………………………………...<br />
7.3. Results and discussions ………………………………………...<br />
7.3.1. The number of flowers per flower head ………………….<br />
7.3.2. The average number of seeds per flower head …………...<br />
7.3.3. The influence of the number of diploid pollen grains in<br />
diploid red clover flower heads (unisolated plots) ……...<br />
7.3.4. The influence of the haploid pollen on the average<br />
number of seeds per flower head in tetraploid red clover<br />
(unisolated plots) ………………………………………..<br />
7.3.5. The influence of the diploid pollen on the average number<br />
of seeds per flower head in diploid red clover (plots<br />
isolated with sainfoin) …………………………………...<br />
7.3.6. The influence of the haploid pollen on the average<br />
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