scholarly journals Las potencialidades bioenergéticas del Arundo donax L. en Argentina

Author(s):  
Ada Graciela Nogar ◽  
Luis Damián Rodríguez ◽  
Carlos -Vicente Bongiorno ◽  
Estela Mercedes Santalla

Las iniciativas que estimulan el aprovechamiento de recursos renovables para sustituir fuentes fósiles en pos de la transición energética ganan visibilidad en un contexto de calentamiento global, principal desafío ambiental planetario. El objetivo de este artículo es analizar las barreras y las oportunidades de generar bioenergía térmica a partir de la caña de Castilla (Arundo donax L.) como recurso para diversificar la matriz. Se aplicó un enfoque integral técnico para evaluar las potencialidades energéticas del Arundo donax L., planta herbácea de origen asiático, considerada una especie de buen rendimiento de biomasa por hectárea. Aplicando diseños en bloques al azar y técnicas estandarizadas, se realizaron ensayos agronómicos en el SE de la provincia de Buenos Aires. Se obtuvieron rendimientos entre 5 y 11 t/ha, superiores a mayor densidad de plantación. Las características tecnológicas de la biomasa mostraron un contenido promedio de celulosa de 53 % y un poder calorífico superior entre 4000 y 4500 kcal/kg, lo que confirma su potencial como cultivo energético. Los resultados sobre la producción y el uso de la biomasa demostraron que se dispone de las capacidades tecnológicas para su explotación, sin impactar en los suelos y aprovechando su potencialidad como recurso energético renovable. Se reflexiona acerca de la cadena de valorización de la especie que permita promover procesos de localización de proyectos que activen complementariedades entre territorios singulares.   Abstract Initiatives that stimulate the use of renewable resources to replace fossil sources in pursuit of the energy transition gain visibility in the context of global warming, the main planetary environmental challenge. In the study, a comprehensive technical approach was applied to evaluate the energy potential of Giant reed (Arundo donax L.), a herbaceous plant of Asian origin, considered a species of good biomass yield per hectare. From randomized block designs and standardized techniques, agronomic trials were carried out in the SE of the Province of Buenos Aires, obtaining yields between 5 and 11 t/ha, higher at higher planting density. The technological characteristics of the biomass showed an average cellulose content of 53 % and a higher calorific value between 4000 and 4500 kcal/kg, confirming its potential as an energy crop. The results on the production and use of the biomass demonstrated the availability of technological capacities for its exploitation without impacting soils and taking advantage of its potential as a renewable energy resource. Thus, we reflect on the value chain of the species that allows promoting localization processes of projects that activate complementarities between singular territories.

Water ◽  
2019 ◽  
Vol 11 (9) ◽  
pp. 1837
Author(s):  
Fabrizio Pietrini ◽  
Monica Carnevale ◽  
Claudio Beni ◽  
Massimo Zacchini ◽  
Francesco Gallucci ◽  
...  

In Mediterranean countries, the use of copper-based fungicides in agriculture is causing a concerning accumulation of copper in the upper layer (0–20 cm) of soils and water bodies. Phytoremediation by energy crops offers the chance to associate the recovering of polluted environments with the production of biomass for bioenergy purposes. The purpose of this work was to evaluate the morpho-physiological response of giant reed (Arundo donax L.), a well-known energy crop, when treated with increasing concentrations of Cu (0, 150, and 300 ppm) in a semi-hydroponic growing system (mesocosm) for one month. The plant morphology (height and base diameter of the stem, number of stems) was not affected by the treatments. The presence of Cu led to the disequilibrium of Fe and Zn foliar concentration and caused an impairment of photosynthetic parameters: at 150 and 300 ppm the chlorophyll content and the ETR were significantly lower than the control. The study demonstrated that, although the presence of Cu may initially affect the plant physiology, the Arundo plants can tolerate up to 300 ppm of Cu without any adverse effect on biomass production, even when grown in semi-hydroponic conditions.


Plants ◽  
2020 ◽  
Vol 9 (11) ◽  
pp. 1584
Author(s):  
Tommaso Danelli ◽  
Marina Laura ◽  
Marco Savona ◽  
Michela Landoni ◽  
Fabrizio Adani ◽  
...  

Arundo donax L., the giant reed—being a long-duration, low-cost, non-food energy crop able to grow in marginal lands—has emerged as a potential alternative to produce biomass for both energy production, with low carbon emissions, and industrial bioproducts. In recent years, pioneering efforts have been made to genetically improve this very promising energy crop. This review analyses the recent advances and challenges encountered in using clonal selection, mutagenesis/somaclonal variation and transgenesis/genome editing. Attempts to improve crop yield, in vitro propagation efficiency, salt and heavy metal tolerance by clonal selection were carried out, although limited by the species’ low genetic diversity and availability of mutants. Mutagenesis and somaclonal variation have also been attempted on this species; however, since Arundo donax is polyploid, it is very difficult to induce and select promising mutations. In more recent years, genomics and transcriptomics data are becoming available in Arundo, closing the gap to make possible the genetic manipulation of this energy crop in the near future. The challenge will regard the functional characterization of the genes/sequences generated by genomic sequencing and transcriptomic analysis in a complex polyploid genome.


2010 ◽  
Vol 157 (2) ◽  
pp. 191-202 ◽  
Author(s):  
C. Mariani ◽  
R. Cabrini ◽  
A. Danin ◽  
P. Piffanelli ◽  
A. Fricano ◽  
...  

2018 ◽  
Vol 24 (1-2) ◽  
Author(s):  
G. Antal ◽  
M. G. Fári ◽  
É. Domokos-Szabolcsy

Giant reed (Arundo donax L.) is a perennial rhizomatous herbaceous plant, it has been widespread all over the world by human activities. It is a 2-8 meter high, polyploid, sterile species (not produce viable seeds), it can be propagated only by vegetative methods (rhizomes, stem cuttings, in vitro biotechnological methods). It has considered promising dedicated energy crop thanks to high biomass production (20-40 dry tons per hectare depending on microclimate), adaptability of different kind of soils and environment and low energy input required for its cultivation. It has been utilized for energetic purposes, biogas/bioethanol production, cellulose/paper production and ornamental purposes. The objectives of the present study were to determine morphological properties of new ornamental giant reed leaf variants originated from somatic embryogenesis and to evaluate their photosynthetic pigment content and photosynthetic activities. The most typical changes was the appearance of different colour (white, yellow, light green) longitudinal stripes on leaves (also on petiole and on leaf blade). It was significant differences (p<0.05) between green and leaf variants in case of photosynthetic pigments content and photosynthetic activity (Fv/Fm value). There was no detectable chlorophyll a or b content in the white bands of leaves and albino shoots. Total chlorophyll content of the white striped leaf variety was more than twice than the light green leaves. Photosynthetic activity and content of photosynthetic pigments also confirm and determine the morphological characteristics and growth habit of leaf variants.


2016 ◽  
Vol 84 ◽  
pp. 176-188 ◽  
Author(s):  
Luigi Pari ◽  
Maria Dolores Curt ◽  
Javier Sánchez ◽  
Enrico Santangelo

2016 ◽  
Vol 7 (1) ◽  
Author(s):  
Piergiorgio Gherbin ◽  
Simone Milan ◽  
Giuseppe Mercurio ◽  
Antonio Scopa

The increasing interest in<em> Arundo donax,</em> a perennial lignocellulosic species only reproducing by propagation, requires the setup of cheap, simple and reliable techniques. Considering these targets, stem cutting offers considerable advantages. The present investigation aimed to compare: i) plants obtained by different propagation methods (by rhizome and micropropagation mother plants); ii) plants obtained by stem cuttings from basal, central and apical parts of the stem; iii) different planting periods (spring, summer, autumn). The obtained results showed that the number of new shoots from stem buds was: i) higher in the spring and lower in the summer planting period; ii) higher from cuttings obtained by micropropagated than rhizome mother plants, both in spring and summer plantings; iii) decreasing passing from the basal to the apical stem portion; iv) partly unexpressed in the autumn planting period; v) lower from one-year stem cuttings as compared to two-year stem cuttings.


2018 ◽  
pp. 31-39 ◽  
Author(s):  
Ida Di Mola ◽  
Gianpiero Guida ◽  
Carmela Mistretta ◽  
Pasquale Giorio ◽  
Rossella Albrizio ◽  
...  

The soil salinity increase in the Mediterranean basin is one of the consequences of the climate change. The aim of this study was to evaluate the adaptability of giant reed (Arundo donax L.) to salinity, in conditions of higher temperatures, in order to hypothesise the future use of giant reed under these conditions. The trial was carried out in pots under a permanent metal structure, open on the sides and with a clear PE on the top. Four levels of soil salinity in the range 3.3-15.5 dS m–1 were imposed. The stem number of the most stressed treatment was about 45% lower than the control and also the stem height was lower than in all other treatments. The green and yellow leaf number decreased as the soil salinity increased, and their sum was significantly lower in the two most stressed treatments. Osmotic potential of the leaf sap was not affected by salinity. Leaf water potential and stomatal conduc- conductance in the saline treatments were lower than in the control. tance Assimilation rate showed similar pattern of stomatal conductance. Intrinsic WUE remained almost stable until July and increased during August under the most stressful conditions. PSII photochemistry was not affected by soil salinity. Biomass yield was not different from the control until to soil ECe 12.0 dS m–1: only the most stressed treatment (15.5 dS m–1) caused yield losses (50%). Tolerance threshold to salinity was 11.2 dS m–1 and the relative yield losses were 11.6% per dS m–1.


2014 ◽  
Vol 69 ◽  
pp. 21-27 ◽  
Author(s):  
Valeria Cavallaro ◽  
Cristina Patanè ◽  
Salvatore L. Cosentino ◽  
Isabella Di Silvestro ◽  
Venera Copani

Sign in / Sign up

Export Citation Format

Share Document