Effect of water availability on physiological performance and lettuce crop yield (Lactuca sativa)
Water is essential for plants, affecting the majority of the physiological processes related to growth and productivity. Water shortage is one of the most common factors that limit crop productivity worldwide. Many cultivars have elevated water requirements, nevertheless in some countries due to glo...
Guardado en:
| Autores principales: | , , |
|---|---|
| Lenguaje: | English |
| Publicado: |
Pontificia Universidad Católica de Chile. Facultad de Agronomía e Ingeniería Forestal
2011
|
| Materias: | |
| Acceso en línea: | http://www.scielo.cl/scielo.php?script=sci_arttext&pid=S0718-16202011000100006 |
| Etiquetas: |
Agregar Etiqueta
Sin Etiquetas, Sea el primero en etiquetar este registro!
|
| id |
oai:scielo:S0718-16202011000100006 |
|---|---|
| record_format |
dspace |
| spelling |
oai:scielo:S0718-162020110001000062011-08-18Effect of water availability on physiological performance and lettuce crop yield (Lactuca sativa)Molina-Montenegro,Marco AZurita-Silva,AndrésOses,Rómulo Soluble sugars water use efficiency water shortage lettuce photosynthetic rate Water is essential for plants, affecting the majority of the physiological processes related to growth and productivity. Water shortage is one of the most common factors that limit crop productivity worldwide. Many cultivars have elevated water requirements, nevertheless in some countries due to global climate change effects, the availability of water for irrigation is becoming limited. In fact, current models of climate changes predict that central Chile will be a sensitive zone where precipitation will drastically decrease. In this study, the variation of gas exchange and production of fresh biomass in a lettuce cultivar, grown under different water availability regimes, was evaluated. Additionally, the concentration of total soluble sugar and water use efficiency (WUE) as mechanisms related to water shortage responses were also evaluated. Overall, individuals with the lowest water availability (50%) showed lower gas exchange and fresh biomass values than their conspecifics grown in optimal irrigated conditions. On the other hand, those individuals with moderate water shortage showed the highest concentration of total soluble sugars and WUE. Our results suggested that cultures exposed to extensive or intense drought events, could be negatively affected in both physiological performance and productivity. Nevertheless, slight decreases in water availability can enable lettuce plants to exhibit a high WUE, maintaining high levels of physiological performance and productivity.info:eu-repo/semantics/openAccessPontificia Universidad Católica de Chile. Facultad de Agronomía e Ingeniería ForestalCiencia e investigación agraria v.38 n.1 20112011-04-01text/htmlhttp://www.scielo.cl/scielo.php?script=sci_arttext&pid=S0718-16202011000100006en10.4067/S0718-16202011000100006 |
| institution |
Scielo Chile |
| collection |
Scielo Chile |
| language |
English |
| topic |
Soluble sugars water use efficiency water shortage lettuce photosynthetic rate |
| spellingShingle |
Soluble sugars water use efficiency water shortage lettuce photosynthetic rate Molina-Montenegro,Marco A Zurita-Silva,Andrés Oses,Rómulo Effect of water availability on physiological performance and lettuce crop yield (Lactuca sativa) |
| description |
Water is essential for plants, affecting the majority of the physiological processes related to growth and productivity. Water shortage is one of the most common factors that limit crop productivity worldwide. Many cultivars have elevated water requirements, nevertheless in some countries due to global climate change effects, the availability of water for irrigation is becoming limited. In fact, current models of climate changes predict that central Chile will be a sensitive zone where precipitation will drastically decrease. In this study, the variation of gas exchange and production of fresh biomass in a lettuce cultivar, grown under different water availability regimes, was evaluated. Additionally, the concentration of total soluble sugar and water use efficiency (WUE) as mechanisms related to water shortage responses were also evaluated. Overall, individuals with the lowest water availability (50%) showed lower gas exchange and fresh biomass values than their conspecifics grown in optimal irrigated conditions. On the other hand, those individuals with moderate water shortage showed the highest concentration of total soluble sugars and WUE. Our results suggested that cultures exposed to extensive or intense drought events, could be negatively affected in both physiological performance and productivity. Nevertheless, slight decreases in water availability can enable lettuce plants to exhibit a high WUE, maintaining high levels of physiological performance and productivity. |
| author |
Molina-Montenegro,Marco A Zurita-Silva,Andrés Oses,Rómulo |
| author_facet |
Molina-Montenegro,Marco A Zurita-Silva,Andrés Oses,Rómulo |
| author_sort |
Molina-Montenegro,Marco A |
| title |
Effect of water availability on physiological performance and lettuce crop yield (Lactuca sativa) |
| title_short |
Effect of water availability on physiological performance and lettuce crop yield (Lactuca sativa) |
| title_full |
Effect of water availability on physiological performance and lettuce crop yield (Lactuca sativa) |
| title_fullStr |
Effect of water availability on physiological performance and lettuce crop yield (Lactuca sativa) |
| title_full_unstemmed |
Effect of water availability on physiological performance and lettuce crop yield (Lactuca sativa) |
| title_sort |
effect of water availability on physiological performance and lettuce crop yield (lactuca sativa) |
| publisher |
Pontificia Universidad Católica de Chile. Facultad de Agronomía e Ingeniería Forestal |
| publishDate |
2011 |
| url |
http://www.scielo.cl/scielo.php?script=sci_arttext&pid=S0718-16202011000100006 |
| work_keys_str_mv |
AT molinamontenegromarcoa effectofwateravailabilityonphysiologicalperformanceandlettucecropyieldlactucasativa AT zuritasilvaandres effectofwateravailabilityonphysiologicalperformanceandlettucecropyieldlactucasativa AT osesromulo effectofwateravailabilityonphysiologicalperformanceandlettucecropyieldlactucasativa |
| _version_ |
1714202128996630528 |