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Pojavnost viroidov v konvencionalni pridelavi hmelja (Humulus lupulus L.)
Veber, Rok (Author), Jakše, Jernej (Mentor) More about this mentor... This link opens in a new window

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Abstract
Navadni hmelj (Humulus lupulus L.) je dvodomna zelnata trajnica iz družine konopljevk (Cannabaceae). Po svetu hmelj komercialno pridelujemo zaradi storžkov, ki rastejo na ženskih rastlinah. To so ženska socvetja, ki vsebujejo veliko lupulinskih žlez, v katerih se nahaja lupulin. Ta vsebuje eterična olja, grenčične smole in čreslovine (alfa in beta kisline), ki dajejo grenak okus pivu. Največ hmelja se uporabi v pivovarstvu. Hmelj svetovno pridelujemo na približno 50.000 hektarjih, na katerih pridelamo 100.000 ton storžkov grenčičnih in aromatičnih sort hmelja. Hektarski pridelek lahko zmanjšujejo abiotski in biotski dejavniki, med katere spadajo tudi viroidi. Na hmelju so do sedaj odkrili štiri viroide. To so hmeljev latentni viroid (HLVd), viroid zakrnelosti hmelja (HSVd), viroid grbavosti jabolk (AFCVd) in viroid razpokanosti skorje agrumov (CBCVd). Vsi od naštetih viroidov vplivajo na vigor rastline in zmanjšujejo vsebnost alfa kislin ter tako vplivajo na slabši pridelek. Hmeljev latentni viroid (HLVd) najdemo v večini hmeljišč na svetu. Slovenija in Nemčija sta edini državi, kjer so do sedaj našli CBCVd v hmelju. Viroid grbavosti jabolk (AFCVd) je bil na hmelju do sedaj najden samo na Japonskem. Edina ukrepa, ki ju lahko izvajamo, sta sajenje zdravih in odstranjevanje okuženih rastlin.

Language:Slovenian
Keywords:viroidi, hmelj, Humulus lupulus, bolezenska znamenja
Work type:Bachelor thesis/paper (mb11)
Tipology:2.11 - Undergraduate Thesis
Organization:BF - Biotechnical Faculty
Year:2019
Publisher:[R. Veber]
UDC:633.791:632.3:579.8(043.2)
COBISS.SI-ID:9292153 This link opens in a new window
Views:409
Downloads:149
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Secondary language

Language:English
Title:The presence of viroids in convencional hop production (Humulus lupulus L.)
Abstract:
Hop (Humulus lupulus L.) is dioecious perennial from Cannabaceae family. Plant is commercially grown worldwide because of the cones found on female plants. Cones are female inflorescences that contain many lupulin glands that contain lupulin. It contains essential oils, bitter resins and chives (alpha and beta acids) that give a bitter taste to the beer where most of the hop is used. Hop is grown globally on approximately 50,000 hectares on which we produce 100,000 tons of bitter and aromatic hops. Hectare yield can be reduced by abiotic and biotic factors, including viroids. So far, four viroids have been detected in hop. These are hop latent viroid (HLVd), hop stunt viroid (HSVd), apple fruit crinkle viroid (AFCVd) and citrus bark cracking viroid (CBCVd). All of the listed viroids reduce the vigor of the plant and content of alpha acids, thus affect the decrease in yield. Hop latent viroid (HLVd) is found in most hop gardens in the world. Slovenia and Germany are the only two countries where CBCVd in hop was found. Apple fruit crinkle viroid (AFCVd) was found on hop only in Japan. The only measures we can take, to reduce the presence of viroids are planting healthy plants and removing infected plants.

Keywords:viroids, hop, Humulus lupulus, symptoms

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