Effects of high temperature stress on microsporogenesis and pollen production in sunflower
Апстракт
Heat stress can affect pollen production as it may interrupt the process of microsporogenesis and prevent normal pollen development. The aim of this research was to investigate whether occurence of male sterile plants in a male fertile sunflower accession may be due to the heat stress during microsporogenesis. Male sterile and male fertile plants of an inbred line were
analyzed by evaluating development of anthers, presence of pollen, pollen vitality and analysis of meiosis – microsporogenesis. Anthers of male sterile plants were poorly developed and without pollen while fertile plants had pollen vitality of 98%. Analysis of meiosis showed normal diakinesis with 17 bivalents in both sterile and fertile plants. However, the following phases were all with abnormalities in sterile plants (metaphase I 6-18%, anaphase I 6-10%,
telophase II 32-46%), while in fertile plants abnormalities were also present but less expressed with 5, 1 and 20% respectively. After telophase II, microspores w...ere found sporadiccaly but smaller than normal, deformed and without an exine.
Кључне речи:
heat stress / microsporogenesis / sunflower / male sterility / pollen productionИзвор:
Book of Abstracts, 11th International Symposium of Agricultural Sciences “AgroReS 2022", 26-28 May 2022, Trebinje, Bosnia and Herzegovina, 2022, 72-72Издавач:
- Banja Luka : University of Banja Luka, Faculty of Agriculture
Колекције
Институција/група
FiVeRTY - CONF AU - Terzić, Sreten AU - Cvejić, Sandra AU - Jocković, Milan AU - Jocić, Siniša AU - Miklič, Vladimir PY - 2022 UR - http://fiver.ifvcns.rs/handle/123456789/2809 AB - Heat stress can affect pollen production as it may interrupt the process of microsporogenesis and prevent normal pollen development. The aim of this research was to investigate whether occurence of male sterile plants in a male fertile sunflower accession may be due to the heat stress during microsporogenesis. Male sterile and male fertile plants of an inbred line were analyzed by evaluating development of anthers, presence of pollen, pollen vitality and analysis of meiosis – microsporogenesis. Anthers of male sterile plants were poorly developed and without pollen while fertile plants had pollen vitality of 98%. Analysis of meiosis showed normal diakinesis with 17 bivalents in both sterile and fertile plants. However, the following phases were all with abnormalities in sterile plants (metaphase I 6-18%, anaphase I 6-10%, telophase II 32-46%), while in fertile plants abnormalities were also present but less expressed with 5, 1 and 20% respectively. After telophase II, microspores were found sporadiccaly but smaller than normal, deformed and without an exine. PB - Banja Luka : University of Banja Luka, Faculty of Agriculture C3 - Book of Abstracts, 11th International Symposium of Agricultural Sciences “AgroReS 2022", 26-28 May 2022, Trebinje, Bosnia and Herzegovina T1 - Effects of high temperature stress on microsporogenesis and pollen production in sunflower EP - 72 SP - 72 UR - https://hdl.handle.net/21.15107/rcub_fiver_2809 ER -
@conference{ author = "Terzić, Sreten and Cvejić, Sandra and Jocković, Milan and Jocić, Siniša and Miklič, Vladimir", year = "2022", abstract = "Heat stress can affect pollen production as it may interrupt the process of microsporogenesis and prevent normal pollen development. The aim of this research was to investigate whether occurence of male sterile plants in a male fertile sunflower accession may be due to the heat stress during microsporogenesis. Male sterile and male fertile plants of an inbred line were analyzed by evaluating development of anthers, presence of pollen, pollen vitality and analysis of meiosis – microsporogenesis. Anthers of male sterile plants were poorly developed and without pollen while fertile plants had pollen vitality of 98%. Analysis of meiosis showed normal diakinesis with 17 bivalents in both sterile and fertile plants. However, the following phases were all with abnormalities in sterile plants (metaphase I 6-18%, anaphase I 6-10%, telophase II 32-46%), while in fertile plants abnormalities were also present but less expressed with 5, 1 and 20% respectively. After telophase II, microspores were found sporadiccaly but smaller than normal, deformed and without an exine.", publisher = "Banja Luka : University of Banja Luka, Faculty of Agriculture", journal = "Book of Abstracts, 11th International Symposium of Agricultural Sciences “AgroReS 2022", 26-28 May 2022, Trebinje, Bosnia and Herzegovina", title = "Effects of high temperature stress on microsporogenesis and pollen production in sunflower", pages = "72-72", url = "https://hdl.handle.net/21.15107/rcub_fiver_2809" }
Terzić, S., Cvejić, S., Jocković, M., Jocić, S.,& Miklič, V.. (2022). Effects of high temperature stress on microsporogenesis and pollen production in sunflower. in Book of Abstracts, 11th International Symposium of Agricultural Sciences “AgroReS 2022", 26-28 May 2022, Trebinje, Bosnia and Herzegovina Banja Luka : University of Banja Luka, Faculty of Agriculture., 72-72. https://hdl.handle.net/21.15107/rcub_fiver_2809
Terzić S, Cvejić S, Jocković M, Jocić S, Miklič V. Effects of high temperature stress on microsporogenesis and pollen production in sunflower. in Book of Abstracts, 11th International Symposium of Agricultural Sciences “AgroReS 2022", 26-28 May 2022, Trebinje, Bosnia and Herzegovina. 2022;:72-72. https://hdl.handle.net/21.15107/rcub_fiver_2809 .
Terzić, Sreten, Cvejić, Sandra, Jocković, Milan, Jocić, Siniša, Miklič, Vladimir, "Effects of high temperature stress on microsporogenesis and pollen production in sunflower" in Book of Abstracts, 11th International Symposium of Agricultural Sciences “AgroReS 2022", 26-28 May 2022, Trebinje, Bosnia and Herzegovina (2022):72-72, https://hdl.handle.net/21.15107/rcub_fiver_2809 .