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Title: Adventitious rooting of conifers: influence of biological factors
Authors: Zavattieri, Maria Amely
Ragonezi, Carla
Klimaszewska, Krystyna
Keywords: Biotization
Plant-growth-promoting bacteria
Issue Date: 6-Jun-2016
Publisher: Springer
Citation: Review Trees pp 1-12 First online: 03 June 2016 Adventitious rooting of conifers: influence of biological factors Maria Amely Zavattieri , Carla Ragonezi, Krystyna Klimaszewska
Abstract: Vegetative propagation of superior conifer trees can be achieved e.g. through rooted cuttings or rooted microshoots, the latter predominantly through in vitro tissue culture. Both techniques are used to achieve rapid multiplication of trees with favorable genetic combinations and to capture a large proportion of the genetic diversity in a single generation cycle. However, adventitious rooting of shoots (cuttings) is often not efficient due to various problems such as scarcity of roots and cessation of their growth, both of which limit the application of vegetative propagation in some conifer species. Many factors are involved in the adventitious rooting of shoots including physical and chemical ones such as plant growth regulators, carbohydrates, light quality, temperature and rooting substrates or media (reviewed by Ragonezi et al. 2010). The focus of this review is on biological factors, such as inoculations with Agrobacterium rhizogenes, plant- growth-promoting rhizobacteria and other endophytes, and mycorrhizal fungi, which were found to stimulate adventitious rooting. These microorganisms could contribute not only to adventitious root development but also help in protecting conifer plants against pathogenic microorganisms, facilitate acclimation and transplanting, and contribute to more sustainable, chemical-free forests.
Type: article
Appears in Collections:ICT - Publicações - Artigos em Revistas Internacionais Com Arbitragem Científica
BIO - Publicações - Artigos em Revistas Internacionais Com Arbitragem Científica

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