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De Pascale, S.; Maggio, A.; Orsini, F.; Stanghellini, C.; Heuvelink, E. |
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Title |
Growth response and radiation use efficiency in tomato exposed to short-term and long-term salinized soils |
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Year |
2015 |
Publication |
Scientia Horticulturae |
Abbreviated Journal |
Scientia Horticulturae |
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Volume |
189 |
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139-149 |
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Leaf osmotic adjustment; Stomatal resistance; Leaf water potential; Light; Salt stress; RUE; physiological-response; salt tolerance; drought stress; water-use; yield; nitrogen; interception; productivity; leaf; photosynthesis |
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Abstract |
Farmlands are increasingly exposed to degradation phenomena associated to climate change and agricultural practices, including irrigation. It is estimated that about 20% of the world’s irrigated land is salt affected. In this paper we aimed at evaluating the effect of seasonal and multiannual soil satinization on growth, yield, and radiation use efficiency of tomato in open field. Two field experiments were carried out at the Experimental Station of the University of Naples Federico II (latitude 40 degrees 31’N longitude 14 degrees 58’E) (Italy) on tomato during 2004 and 2005 to study the effect of five levels of water salinity: NSC (EC = 0.5 dS m(-1)), SW1 (EC= 2.3 dS m(-1)), SW2 (EC= 4.4 dS m(-1)), SW3 (EC= 8.5 dS m(-1)) and SW4 (EC= 15.7 dS m(-1)) in a soil exposed to one-season salinization (ST = short-term) and an adjacent soil exposed to >20 years salinization (LT = long-term). Plant growth, yield and fruit quality (pH, EC, total soluble solids and the concentration of reducing sugars and of titratable acids), and plant water relations were measured and radiation use efficiency (RUE) was calculated. Increasing water salinity negatively affected the leaf area index (LAI), radiation use efficiency (RUE) and above-ground dry weight (DW) accumulation resulting in lower total and marketable yield. Maximum total and marketable yield obtained with the NSC treatment were respectively 117.9 and 111.0 Mg ha(-1) in 2004 and 113.1 and 107.9 Mg ha(-1) in 2005. Although the smaller leaf area of salinized plants was largely responsible for reduced RUE, we found approximately 50% of this reduction to be accounted for by processes other than changed crop architecture. These may include an increased stomatal resistance, increased mesophyll resistance and other impaired metabolic functions that may occur at high salinity. Remarkably, we found that LT salinized plants had a slightly better efficiency of use of intercepted radiation (RUEIR) at a given EC of soil extract than ST salinized plants indicating that LT salinization, and consequent permanent modifications of the soil physical properties, may trigger additional physiological mechanisms of adaptation compared to ST salinized plants. These differences are relevant in light of the evolution of salinized areas, also in response to climate change. |
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0304-4238 |
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CropM, ftnotmacsur |
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MA @ admin @ |
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4557 |
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de Wit, A.; Boogaard, H.; van Diepen, K.; van Kraalingen, D.; Rötter, R.; Supit, I.; Wolf, J.; van Ittersum, M. |
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WOFOST developer’s response to article by Stella et al., Environmental Modelling & Software 59 (2014): 44–58 |
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Journal Article |
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2015 |
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Environmental Modelling & Software |
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Env. Model. Softw. |
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73 |
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57-59 |
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1364-8152 |
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CropM, ftnotmacsur |
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MA @ admin @ |
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4699 |
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Del Prado, A.; Van den Pol-van Dasselaar, A.; Chadwick, D.; Misselbrook, T.; Sandars, D.; Audsley, E.; Mosquera-Losada, M.; R, |
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Synergies between mitigation and adaptation to Climate Change in grassland-based farming systems |
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2015 |
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FACCE MACSUR Reports |
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6 |
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D-L3.3 |
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Climate change mitigation and adaptation have generally been considered in separate settings for both scientific and policy viewpoints. Recently, it has been stressed (e.g. by the latest IPCC reports) the importance to consider both mitigation and adaptation from land management together. To date, although there is already large amount of studies considering climate mitigation and adaptation in relation to grassland-based systems, there are no studies that analyse the potential synergies and tradeoffs for the main climate change mitigation and adaptation measures within the current European Policy context. This paper reviews which mitigation and adaptation measures interact with each other and how, and it explores the potential limitations and strengths of the different policy instruments that may have an effect in European grassland-based livestock systems. No Label |
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MA @ admin @ |
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2109 |
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Dell’Unto, D. |
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Modeling the effects of Climate Change on dairy farms: an integration of livestock and economic models |
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2015 |
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FACCE MACSUR Reports |
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5 |
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Sp5-16 |
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MACSUR Science Conference 2015 »Integrated Climate Risk Assessment in Agriculture & Food«, 8–9+10 April 2015, Reading, UK |
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MA @ admin @ |
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2131 |
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Dockter, C.; Hansson, M. |
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Improving barley culm robustness for secured crop yield in a changing climate |
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Journal Article |
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2015 |
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Journal of Experimental Botany |
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J. Experim. Bot. |
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66 |
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12 |
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3499-3509 |
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Keywords |
Climate Change; Crops, Agricultural/*anatomy & histology/genetics/*growth & development; Edible Grain/anatomy & histology/genetics/growth & development; Genes, Plant; Hordeum/*anatomy & histology/genetics/*growth & development; Phenotype; Barley (Hordeum vulgare); Green Revolution; brassinosteroid; gibberellin; lodging; plant architecture; short culm |
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The Green Revolution combined advancements in breeding and agricultural practice, and provided food security to millions of people. Daily food supply is still a major issue in many parts of the world and is further challenged by future climate change. Fortunately, life science research is currently making huge progress, and the development of future crop plants will be explored. Today, plant breeding typically follows one gene per trait. However, new scientific achievements have revealed that many of these traits depend on different genes and complex interactions of proteins reacting to various external stimuli. These findings open up new possibilities for breeding where variations in several genes can be combined to enhance productivity and quality. In this review we present an overview of genes determining plant architecture in barley, with a special focus on culm length. Many genes are currently known only through their mutant phenotypes, but emerging genomic sequence information will accelerate their identification. More than 1000 different short-culm barley mutants have been isolated and classified in different phenotypic groups according to culm length and additional pleiotropic characters. Some mutants have been connected to deficiencies in biosynthesis and reception of brassinosteroids and gibberellic acids. Still other mutants are unlikely to be connected to these hormones. The genes and corresponding mutations are of potential interest for development of stiff-straw crop plants tolerant to lodging, which occurs in extreme weather conditions with strong winds and heavy precipitation. |
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0022-0957 1460-2431 |
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Review |
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MA @ admin @ |
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4556 |
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