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Title:TERMOGENETSKO CVETENJE VELIKE ALOKAZIJE
Authors:ID Pochyla, Vesna (Author)
ID Ivančič, Anton (Mentor) More about this mentor... New window
Files:.pdf UNI_Pochyla_Vesna_2013.pdf (3,01 MB)
MD5: D9F6DCC133CC5191233990E64BB52BCD
 
Language:Slovenian
Work type:Undergraduate thesis
Organization:FKBV - Faculty of Agriculture and Life Sciences
Abstract:Termogenetsko cvetenje velike alokazije UDK: 582.547:631.527.82:631.547.4(043.2)=863 Raziskave termogeneze socvetij velike alokazije (Alocasia macrorrhizos (L.) G. Don) so potekale od decembra 2002 do februarja 2003 in od februarja do marca 2004 v eni od divjih populacij na otoku Espiritu Santo, Vanuatu (Južni Pacifik). Temperature so bile merjene s šestimi inframilimetričnimi termočleni (Copper – Constantan, tip T), povezanimi s shranjevalnikom podatkov Campbell Scientific 10X. Termogeno obdobje je trajalo 36 do 42 ur, segrevanje pa je bilo dokumentirano na moškem delu in na sterilnem podaljšku socvetja. Najvišje temperature so bile zabeležene na sterilnem podaljšku. Temperature so začele naraščati malo pred polnočjo in dosegle vrh med 5.45 in 6.00 zjutraj, ko je vonj socvetij postal najbolj intenziven. Povprečna maksimalna temperatura 59 proučevanih socvetij je bila 43,9 ± 0,6 ⁰C. Absolutni maksimum je bil dosežen pri 47,4 ⁰C. Maksimalni odklon od temperature okoljskega zraka je znašal 25,6 ⁰C. Segrevanje moškega dela se je začelo 10 do 15 ur, preden je vonj socvetij postal najbolj intenziven, in se je končalo 2 do 3 ure po sprostitvi peloda. Temperature so dosegle dva vrha: prvi se je pojavil 15 minut po temperaturnem vrhu sterilnega podaljška, medtem ko se je drugi vrh pojavil v času sprostitve peloda. Dominantne obiskovalke cvetočih socvetij so bile strigalice (Labidura truncata Kirby). Oploditev in razvoj semen sta bila zelo redka.
Keywords:velika alokazija, Alocasia macrorrhizos, termogeneza, razvoj socvetja, opraševanje
Place of publishing:Maribor
Year of publishing:2013
PID:20.500.12556/DKUM-42327 New window
NUK URN:URN:SI:UM:DK:OPRWI6MK
Publication date in DKUM:11.10.2013
Views:2931
Downloads:229
Metadata:XML DC-XML DC-RDF
Categories:FKBV
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Secondary language

Language:English
Title:Thermogenic flowering of the giant taro
Abstract:The investigations of thermogenesis of Alocasia macrorrhizos (L.) G. Don inflorescences took place from December 2002 to February 2003, and from February 2004 to March 2004, in one of the wild populations on Espiritu Santo, Vanuatu (South Pacific). Temperatures were measured with six Copper-Constantan (type T) infra-millimetric thermocouples wired to a Campbell Scientific 10X data logger. The thermogenic period lasted 36-42 h, and heating was documented on the male part and the sterile appendix. The highest temperatures were recorded on the sterile appendix. They started to rise slightly before midnight and peaked between 5.45 and 6.00, when the inflorescence odour became the most intense. The average maximum temperature of 59 investigated inflorescences was 43.9 ± 0.6 °C. The absolute maximum was 47.4 °C. The maximum deviation from the ambient air temperature was 25.6 °C. The heating of the male part began 10-15 h before the inflorescence odour became the most intense and ended 2-3 h after the release of pollen. Its temperatures had two peaks: the first one appeared 15 min after the temperature peak of the sterile appendix, whereas the second one appeared at the time of the release of pollen. The dominating visitors of the flowering inflorescences were earwigs (Labidura truncata Kirby). Seed set was extremely rare.
Keywords:Giant taro, Alocasia macrorrhizos, thermogenesis, inflorescence development, pollination


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