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dc.contributor.author
Marinangeli, Pablo Alejandro
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dc.date.available
2019-05-28T18:33:56Z
dc.date.issued
2012-04
dc.identifier.citation
Marinangeli, Pablo Alejandro; Micropropagazione delle geofite ornamentali; Società di Ortoflorofrutticoltura Italiana; Italus Hortus; 19; 1; 4-2012; 65-76
dc.identifier.issn
1127-3496
dc.identifier.uri
http://hdl.handle.net/11336/77334
dc.description.abstract
Le geofite ornamentali sono piante dotate di organi di riserva sotterranei che sopravvivono alla stagione sfavorevole e che vengono coltivate ed utilizzate per le loro caratteristiche estetiche. Di solito, i metodi tradizionali di propagazione delle specie geofite hanno una bassa efficienza e possono essere una via di trasmissione per alcune malattie. La propagazione in vitro può superare questi problemi. In questo lavoro vengono descritti sistemi di propagazione di specie geofite basati sull’impiego della coltura in vitro di organi sotterranei di sopravvivenza, che si realizza con la produzione di bulbetti ovvero propaguli naturalmente rustici che possono essere trasferiti direttamente in coltivazione a terra senza un periodo di acclimatazione. Particolare attenzione viene riservata ai sistemi di coltivazione che utilizzano bioreattori per la micropropagazione commerciale su larga scala.
dc.description.abstract
Ornamental geophytes are plants with exploited aesthetic properties that survive the unfavorable season by underground storage organs. Traditional propagation methods of geophytes species have low efficiency and may be the way for diseases transmission. In vitro propagation can overcome these problems. The procedures for in vitro propagation of bulb crops may differ slightly from the traditional five stages process of micropropagation, since geophytes have such a unique structure. So, a bulb induction stage is necessary after shoot proliferation, while a rooting stage usually is not needed. Efficient geophytes micropropagation systems are described based on the initiation of in vitro culture from perpetuating underground organs and ending with the differentiation of bulblets, propagules that are naturally rustic and can be transferred directly to the ground without acclimatization. However, bulblets and cormlets regenerated in vitro are dormant and must be subjected to treatments in order to release dormancy. Differentiation of shoots and multiplication by shoot clumps can be achieved in most geophytes by direct organogenesis, indirect organogenesis and somatic embryogenesis. The multiplication system influences both the genetic stability and the multiplication rate of propagules. Usually, direct organogenesis is preferred and usually high proliferation rates are achieved. The use of bioreactors for micropropagation has proved applicable to many species and plant organs including shoots, bulbs, microtubers, corms and somatic embryos. However, transplanting shoots in the soil is a major constraint of bioreactor technology for mass propagation of plants due to the fact that most shoots are etiolated and tender and they are easily damaged by handling or environmental stress. It is not the case of geophytes because the hard storage organs produced in vitro can be handled for direct planting in the field; so, these organs are perfectly suitable for mass propagation by using bioreactors. Bioreactor techniques for large-scale propagation of geophytes were described for Lilium, Gladiolus, Hyacinth, Hippeastrum and Ornithogalum, but only a few have found their way to practical application. The most advanced techniques for the micropropagation of Tulipa, Lilium, Gladiolus and Alstroemeria are reviewed in this paper.
dc.format
application/pdf
dc.language.iso
ita
dc.publisher
Società di Ortoflorofrutticoltura Italiana
dc.rights
info:eu-repo/semantics/openAccess
dc.rights.uri
https://creativecommons.org/licenses/by-nc-sa/2.5/ar/
dc.subject
Bulb
dc.subject
Corm
dc.subject
Rhizome
dc.subject
In Vitro Propagation
dc.subject
Lilium
dc.subject
Tulipa
dc.subject
Gladiolus
dc.subject
Alstroemería
dc.subject.classification
Otras Biotecnología Agropecuaria
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dc.subject.classification
Biotecnología Agropecuaria
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dc.subject.classification
CIENCIAS AGRÍCOLAS
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dc.title
Micropropagazione delle geofite ornamentali
dc.title
Micropropagation of ornamental geophytes
dc.type
info:eu-repo/semantics/article
dc.type
info:ar-repo/semantics/artículo
dc.type
info:eu-repo/semantics/publishedVersion
dc.date.updated
2019-05-14T14:06:47Z
dc.journal.volume
19
dc.journal.number
1
dc.journal.pagination
65-76
dc.journal.pais
Italia
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dc.journal.ciudad
Florencia
dc.description.fil
Fil: Marinangeli, Pablo Alejandro. Consejo Nacional de Investigaciones Científicas y Técnicas. Centro Científico Tecnológico Conicet - Bahía Blanca. Centro de Recursos Naturales Renovables de la Zona Semiárida. Universidad Nacional del Sur. Centro de Recursos Naturales Renovables de la Zona Semiárida; Argentina. Universidad Nacional del Sur. Departamento de Agronomía; Argentina
dc.journal.title
Italus Hortus
dc.relation.alternativeid
info:eu-repo/semantics/altIdentifier/url/http://www.soihs.it/italushortus/it/n-16-19-1-2012/marinangeli-micropropagazione-delle-geofite-ornamentali.aspx
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