Marioara Urda _Grebenisan_ rezumat_teza_engleza - USAMV Cluj ...

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<strong>Marioara</strong> GREBENIŞAN Summary of the PhD thesis Research on the structure of di- and tetraploid red clover seed plants and the influence of meiotic anomalies on the fertility of autotetraploid forms 5.1.1. General view ……………………………………………... 5.2. Material and method …………………………………………... 5.3. Results and discussions ………………………………………... 5.3.1. Testing pollen quality ……………………………………. 5.3.2. Testing germination, elongation and the indicator of in vitro pollen viability …………………………………... 5.3.3. The growth of in vitro pollen tubes ……………………… 5.3.4. The growth of in vitro pollen tubes in detached pistils ….. 5.4. Embryogenesis in di- and tetraploid red clover ……………….. 5.4.1. General view ……………………………………………... 5.5. Material and method …………………………………………... 5.6. Results and discussions ………………………………………... 5.6.1. Phases of embryogenesis ………………………………… 5.6.2. Comparative aspects regarding the fertility of di- and tetraploids ……………………………………………….. CHAPTER VI 6. The influence of meiotic anomalies on the fertility of autotetraploid forms of red clover ……………………………………………………. 6.1. Introduction ……………………………………………………. 6.2. Material and method …………………………………………... 6.3. Meiosis and its consequences upon fertility …………………... 6.3.1. Meiosis in the case of eutetraploids …………………………. 6.3.2. The relationship between meiosis and fertility …………... 6.4. Meiosis in the case of tetraploids ……………………………... 6.5. Meiosis in the case of aneuploids ……………………………... 6.5.1. The relationship between meiosis and fertility ………….. CHAPTER VII 7. The influence of haploid and diploid pollen in the fertilization process in red clover (Trifolium pratense L.) ………………………………… 7.1. General view …………………………………………………... 7.2. Material and method …………………………………………... 7.3. Results and discussions ………………………………………... 7.3.1. The number of flowers per flower head …………………. 7.3.2. The average number of seeds per flower head …………... 7.3.3. The influence of the number of diploid pollen grains in diploid red clover flower heads (unisolated plots) ……... 7.3.4. The influence of the haploid pollen on the average number of seeds per flower head in tetraploid red clover (unisolated plots) ……………………………………….. 7.3.5. The influence of the diploid pollen on the average number of seeds per flower head in diploid red clover (plots isolated with sainfoin) …………………………………... 7.3.6. The influence of the haploid pollen on the average 4 139 141 143 143 144 147 147 150 150 152 154 154 164 172 172 173 175 176 179 183 184 186 188 188 189 191 191 194 194 196 197
<strong>Marioara</strong> GREBENIŞAN Summary of the PhD thesis Research on the structure of di- and tetraploid red clover seed plants and the influence of meiotic anomalies on the fertility of autotetraploid forms number of seeds per flower head in tetraploid red clover ( plots isolated with sainfoin) …………………………… 7.3.7. The average percentage of seed formation ……………… 7.3.8. The influence of the diploid pollen on the average percentage of formed seeds in diploid red clover (unisolated plots and plots isolated with sainfoin) ……... 7.3.9. The influence of the haploid pollen on the average percentage of formed seeds in tetraploid red clover (unisolated plots and plots isolated with sainfoin) ……... CONCLUSIONS................................................................................................. BIBLIOGRAPHY............................................................................................... SUMMARY IN ROMANIAN SUMMARY IN ENGLISH 5 198 199 199 201 205 211
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Marioara Urda _Grebenisan_ rezumat_teza_engleza - USAMV Cluj ...

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