20.500.12556/DKUM-15618 Umetno opraševanje in viabilnost peloda črnega teloha (Helleborus niger L.) Artificial pollination on Christmas rose (Helleborus niger L.) and pollen viability Raziskava je bila narejena na črnem telohu (Helleborus niger L.) v letih 2006 in 2007. V naravni populaciji v kraju Doblatina smo proučevali možnost samooprašitve teloha in kaljivost semen samooprašenih rastlin. Analizirali smo semenitev samooprašenih in hibridiziranih rastlin. Z metodo barvanja z acetokarminom smo proučevali vitalnosti peloda glede na dolžino skladiščenja pri temperaturi -9 oC. Za analizo samooprašnosti smo v naravni populaciji izolirali 41 matičnih rastlin. Rastline, ki smo jih ročno samoopraševali, so semenile. Povprečna kaljivost je bila 9,17 %. Največje število semen je bilo 105, najmanjše pa 2 semeni na posamezno obravnavano rastlino. Pri primerjavi semenitve rastlin je bilo ugotovljeno, da hibridizirane rastline tvorijo povprečno težja semena kot samooprašene rastline. Z analizo je bilo ugotovljeno, da obstajajo statistično značilne razlike v viabilnosti peloda, ki smo ga različno dolgo skladiščili. The research work involved Christmas rose (Helleborus niger L.) plant material from naturally grown local population in Doblatina, during the years 2006 and 2007. We studied the possibilities of self-pollination and germination of seeds of self-pollinated plants. We compared seed development of self-pollinated and hybridized plants. With the method of colouring by aceto-carmine, we studied the pollen viability depending on the duration of storage at -9 oC. For the purposes of the self-pollination analysis, we isolated 41 parental plants in their natural populations. Plants that were manually self-pollinated frequently developed seeds. The average germination was 9.17 %. The highest number of seeds per individual plant, considered in the analysis, was 105, and the lowest number was 2. The comparison of seed development showed that, on average, hybridized plants formed heavier seeds than self-pollinated plants. The results of the analysis showed that there were statistically significant differences in viability of pollen with different duration of storage. opraševanje semenitev vznik viabilnost peloda črni teloh Helleborus niger pollination seed development germination pollen viability Christmas rose Helleborus niger true true false Slovenski jezik Angleški jezik Diplomsko delo 2010-09-14 19:15:55 2010-10-13 08:06:03 2022-04-13 07:26:36 2023-12-19 03:24:17 2010 0 Maribor 0 0000-00-00 NiDoloceno NiDoloceno NiDoloceno 0000-00-00 0000-00-00 0000-00-00 URN:SI:UM:DK:WQK15NUQ VS_Golec_Stefka_2010.pdf VS_Golec_Stefka_2010.pdf 1 DDFF4C36563A662D4B1E328420C7E757 689bd623b4ddc40e4735725d2cba259207f9598bde6c1e1a51cca50e8dbf69ef 7108f2fa-7c04-11eb-bb7a-00155d0001ca 20.500.12556/dkum/1170666c-01c0-4288-af22-3ee47c4a583c https://dk.um.si/Dokument.php?lang=slv&id=17248 Fakulteta za kmetijstvo in biosistemske vede 0 0 0