Biblioteca Digital de VanguardiaSapling growth, water status and survival of two native shrubs from the Monte Desert, Mendoza, Argentina, under different preconditioning treatments
Revegetation in arid zones poses numerous challenges, due particularly to drought, extreme temperatures, high irradiance, and infertile soils, factors which threaten the survival of installed saplings. Nursery techniques to avoid transplant shock focus on manipulating the watering regime so as to fa...
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| Formato: | Artículo |
| Lenguaje: | Inglés |
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Universidad Nacional de Cuyo. Facultad de Ciencias Agrarias
2016
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| Acceso en línea: | http://bdigital.uncu.edu.ar/8443 |
| _version_ | 1782341862488539136 |
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| author | Fernández, María Emilia Passera, Carlos Bernardo Cony, Mariano Anibal |
| author_facet | Fernández, María Emilia Passera, Carlos Bernardo Cony, Mariano Anibal |
| author_sort | Fernández, María Emilia |
| collection | Repositorio |
| description | Revegetation in arid zones poses numerous challenges, due particularly to drought,
extreme temperatures, high irradiance, and infertile soils, factors which threaten the
survival of installed saplings. Nursery techniques to avoid transplant shock focus
on manipulating the watering regime so as to favor the acclimation of seedlings to
unfavorable field conditions. In order to analyze the suitability of drought preconditioning
treatments, analyzed the effects of water stress on sapling growth, water status
and survival on two native shrub species of the Monte Desert. It was used a randomized
experimental design with one fixed factor, with three levels of water supply: control
(T1), moderate stress (T2), and severe stress (T3). Preconditioning treatments had a
detrimental effect on the growth of saplings of both species, as it was clearly shown
in the reduction of leaf area, sapling height, stem diameter, and biomass. Shoot-to-root
ratio decreased significantly under T3 in both species, and they showed highly negative
water potentials and low stomatal conductance under this treatment. Sapling survival
decreased only under T3. Moderate water stress seems more suitable for preconditioning
this species since it reduces growth, leaf area and leaf conductance without
seedling mortality and maintaining a good growth rate. |
| format | Artículo |
| id | uncu-8443 |
| institution | Biblioteca Digital - UNCUYO |
| language | Inglés |
| publishDate | 2016 |
| publisher | Universidad Nacional de Cuyo. Facultad de Ciencias Agrarias
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| record_format | ojs |
| spelling | uncu-84432017-02-13T18:06:30Z Sapling growth, water status and survival of two native shrubs from the Monte Desert, Mendoza, Argentina, under different preconditioning treatments Crecimiento, estado hídrico y supervivencia de plantines de dos arbustos nativos del Desierto del Monte, Mendoza, Argentina, sometidos a diferentes tratamientos de preacondicionamiento Fernández, María Emilia Passera, Carlos Bernardo Cony, Mariano Anibal Capparis Larrea cuneifolia Potencial hídrico del suelo Conductancia estomática Capparis atamisquea Larrea cuneifolia Water potential Stomatal conductance Monte biogeographic region Preconditioning treatments Tratamientos de preacondicionamiento Región biogeográfica del Monte Revegetation in arid zones poses numerous challenges, due particularly to drought, extreme temperatures, high irradiance, and infertile soils, factors which threaten the survival of installed saplings. Nursery techniques to avoid transplant shock focus on manipulating the watering regime so as to favor the acclimation of seedlings to unfavorable field conditions. In order to analyze the suitability of drought preconditioning treatments, analyzed the effects of water stress on sapling growth, water status and survival on two native shrub species of the Monte Desert. It was used a randomized experimental design with one fixed factor, with three levels of water supply: control (T1), moderate stress (T2), and severe stress (T3). Preconditioning treatments had a detrimental effect on the growth of saplings of both species, as it was clearly shown in the reduction of leaf area, sapling height, stem diameter, and biomass. Shoot-to-root ratio decreased significantly under T3 in both species, and they showed highly negative water potentials and low stomatal conductance under this treatment. Sapling survival decreased only under T3. Moderate water stress seems more suitable for preconditioning this species since it reduces growth, leaf area and leaf conductance without seedling mortality and maintaining a good growth rate. La revegetación de zonas áridas presenta numerosos desafíos, debido a las condiciones de sequía, temperaturas extremas, elevada irradiación y baja fertilidad de los suelos. Las técnicas de vivero que evitan el shock del trasplante se enfocan en manipular el riego para favorecer la aclimatación de los plantines a las condiciones desfavorables del campo. Para evaluar la utilidad del preacondicionamiento, se analizó los efectos del estrés hídrico en el crecimiento, estado hídrico y sobrevivencia de plantines de dos especies arbustivas nativas del Desierto del Monte. Se utilizó un diseño experimental al azar con un factor fijo, con tres niveles de riego: control (T1), estrés moderado (T2) y estrés severo (T3). Los tratamientos de preacondicionamiento tuvieron un efecto negativo en el crecimiento de los plantines, lo que se evidenció por la reducción del área foliar, altura, diámetro del tallo y biomasa. La relación vástago/raíz disminuyó bajo T3 en ambas especies, y presentaron potenciales hídricos y conductancias estomáticas menores a las plantas con mayor disponibilidad hídrica. La supervivencia disminuyó solamente bajo T3. El estrés hídrico moderado parece más adecuado para preacondicionar estas especies ya que reduce su crecimiento, área foliar y conductancia foliar sin que haya mortandad de plantines, manteniendo buenas tasas de crecimiento. Fil: Fernández, María Emilia. Universidad Nacional de Cuyo. Facultad de Ciencias Agrarias Fil: Passera, Carlos Bernardo. Universidad Nacional de Cuyo. Facultad de Ciencias Agrarias Fil: Cony, Mariano Anibal. Instituto Argentino de Investigaciones de las Zonas Áridas <IADIZA> Universidad Nacional de Cuyo. Facultad de Ciencias Agrarias 78 Revista de la Facultad de Ciencias Agrarias Vol. 48, no. 1 Revista de la Facultad de Ciencias Agrarias, Vol. 48, no. 1 2016-06-01 eng Inglés http://bdigital.uncu.edu.ar/8411 info:eu-repo/semantics/openAccess http://creativecommons.org/licenses/by/2.5/ar/ article info:ar-repo/semantics/artículo info:eu-repo/semantics/article info:eu-repo/semantics/publishedVersion application/pdf Universidad Nacional de Cuyo. Facultad de Ciencias Agrarias http://bdigital.uncu.edu.ar/8443 |
| spellingShingle | Capparis Larrea cuneifolia Potencial hídrico del suelo Conductancia estomática Capparis atamisquea Larrea cuneifolia Water potential Stomatal conductance Monte biogeographic region Preconditioning treatments Tratamientos de preacondicionamiento Región biogeográfica del Monte Fernández, María Emilia Passera, Carlos Bernardo Cony, Mariano Anibal Sapling growth, water status and survival of two native shrubs from the Monte Desert, Mendoza, Argentina, under different preconditioning treatments |
| title | Sapling growth, water status and survival of two native shrubs from the Monte Desert, Mendoza, Argentina, under different preconditioning treatments
|
| title_full | Sapling growth, water status and survival of two native shrubs from the Monte Desert, Mendoza, Argentina, under different preconditioning treatments
|
| title_fullStr | Sapling growth, water status and survival of two native shrubs from the Monte Desert, Mendoza, Argentina, under different preconditioning treatments
|
| title_full_unstemmed | Sapling growth, water status and survival of two native shrubs from the Monte Desert, Mendoza, Argentina, under different preconditioning treatments
|
| title_short | Sapling growth, water status and survival of two native shrubs from the Monte Desert, Mendoza, Argentina, under different preconditioning treatments
|
| title_sort | sapling growth, water status and survival of two native shrubs from the monte desert, mendoza, argentina, under different preconditioning treatments |
| topic | Capparis Larrea cuneifolia Potencial hídrico del suelo Conductancia estomática Capparis atamisquea Larrea cuneifolia Water potential Stomatal conductance Monte biogeographic region Preconditioning treatments Tratamientos de preacondicionamiento Región biogeográfica del Monte |
| url | http://bdigital.uncu.edu.ar/8443 |