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Volumn 44, Issue , 2013, Pages 87-97

The role of stomatal conductance for water and radiation use efficiency of durum wheat and triticale in a mediterranean environment

Author keywords

Carbon isotope discrimination; Durum wheat; Radiation use efficiency; Stomatal conductance; Transpiration efficiency; Triticale

Indexed keywords

CARBON ISOTOPE; LIGHT USE EFFICIENCY; MEDITERRANEAN ENVIRONMENT; SOIL WATER; STOMATAL CONDUCTANCE; TEMPERATURE EFFECT; TRANSPIRATION; WATER USE EFFICIENCY; WHEAT;

EID: 84867876620     PISSN: 11610301     EISSN: None     Source Type: Journal    
DOI: 10.1016/j.eja.2012.09.002     Document Type: Article
Times cited : (24)

References (71)
  • 1
    • 57049175929 scopus 로고    scopus 로고
    • Radiation interception and use efficiency as affected by breeding in Mediterranean wheat
    • Acreche M.M., Briceňo-Felix G., Sánchez J.A.M., Slafer G.A. Radiation interception and use efficiency as affected by breeding in Mediterranean wheat. Field Crops Research 2009, 110:91-97.
    • (2009) Field Crops Research , vol.110 , pp. 91-97
    • Acreche, M.M.1    Briceňo-Felix, G.2    Sánchez, J.A.M.3    Slafer, G.A.4
  • 3
    • 0039542200 scopus 로고
    • A new type of porometer for measuring stomatal opening and its use in irrigation studies
    • UNESCO, Paris, F.E. Eckardt (Ed.)
    • Alvim P.T. A new type of porometer for measuring stomatal opening and its use in irrigation studies. Methodology of Plant Eco-Physiology. Arid Zone Research 25 1965, 325-329. UNESCO, Paris. F.E. Eckardt (Ed.).
    • (1965) Methodology of Plant Eco-Physiology. Arid Zone Research 25 , pp. 325-329
    • Alvim, P.T.1
  • 4
    • 8444225310 scopus 로고    scopus 로고
    • Water use efficiency in plant biology
    • Blackwell Publishing Ltd., Oxford, UK, M.A. Bacon (Ed.)
    • Bacon M.A. Water use efficiency in plant biology. Water Use Efficiency in Plant Biology 2004, 1-26. Blackwell Publishing Ltd., Oxford, UK. M.A. Bacon (Ed.).
    • (2004) Water Use Efficiency in Plant Biology , pp. 1-26
    • Bacon, M.A.1
  • 5
    • 58349107351 scopus 로고    scopus 로고
    • Optimizing sowing date of durum wheat in a variable Mediterranean environment
    • Bassu S., Asseng A., Motzo R., Giunta F. Optimizing sowing date of durum wheat in a variable Mediterranean environment. Field Crops Research 2009, 111:109-118.
    • (2009) Field Crops Research , vol.111 , pp. 109-118
    • Bassu, S.1    Asseng, A.2    Motzo, R.3    Giunta, F.4
  • 6
    • 79961128956 scopus 로고    scopus 로고
    • Yield benefits of triticale traits for wheat under current and future climates
    • Bassu S., Richards R.A., Asseng S. Yield benefits of triticale traits for wheat under current and future climates. Field Crops Research 2011, 124:14-24.
    • (2011) Field Crops Research , vol.124 , pp. 14-24
    • Bassu, S.1    Richards, R.A.2    Asseng, S.3
  • 7
    • 0001510633 scopus 로고    scopus 로고
    • Control of leaf expansion rate of droughted mais plants under fluctuating evaporative demand. A superposition of hydraulic and chemical messages?
    • Ben Haj Salah H., Tardieu F. Control of leaf expansion rate of droughted mais plants under fluctuating evaporative demand. A superposition of hydraulic and chemical messages?. Plant Physiology 1997, 114:893-900.
    • (1997) Plant Physiology , vol.114 , pp. 893-900
    • Ben Haj Salah, H.1    Tardieu, F.2
  • 8
    • 49749215752 scopus 로고
    • 2 in determining transpiration-photosynthesis relationships of cotton leaves
    • 2 in determining transpiration-photosynthesis relationships of cotton leaves. Agricultural Meteorology 1965, 2:259-270.
    • (1965) Agricultural Meteorology , vol.2 , pp. 259-270
    • Bierhuizen, J.F.1    Slayter, R.O.2
  • 12
    • 33645798294 scopus 로고    scopus 로고
    • Effects of triticale cultivars grown in a Mediterranean environment on biomass yield and quality
    • Cannas A., Giunta F., Pruneddu G., Boe F., Motzo R. Effects of triticale cultivars grown in a Mediterranean environment on biomass yield and quality. Italian Journal of Animal Science 2005, 4:166-168.
    • (2005) Italian Journal of Animal Science , vol.4 , pp. 166-168
    • Cannas, A.1    Giunta, F.2    Pruneddu, G.3    Boe, F.4    Motzo, R.5
  • 13
    • 0002629050 scopus 로고
    • An empirical model for stomatal resistance of field-grown wheat
    • Choudhury B.J., Idso S.B. An empirical model for stomatal resistance of field-grown wheat. Agricultural and Forest Meteorology 1985, 36:65-82.
    • (1985) Agricultural and Forest Meteorology , vol.36 , pp. 65-82
    • Choudhury, B.J.1    Idso, S.B.2
  • 14
    • 38249038826 scopus 로고
    • An analysis of infrared temperature observations over wheat and calculation of latent heat flux
    • Choudhury B.J., Reginato R.J., Idso S.B. An analysis of infrared temperature observations over wheat and calculation of latent heat flux. Agricultural and Forest Meteorology 1986, 37:75-88.
    • (1986) Agricultural and Forest Meteorology , vol.37 , pp. 75-88
    • Choudhury, B.J.1    Reginato, R.J.2    Idso, S.B.3
  • 15
    • 0001901882 scopus 로고    scopus 로고
    • Adaptation to diverse environments: genotypic variation in water-use efficiency within crop species
    • Academic Press, San Diego, CA, L.E. Jackson (Ed.)
    • Condon A.G., Hall A.E. Adaptation to diverse environments: genotypic variation in water-use efficiency within crop species. Agricultural Ecology 1997, 79-116. Academic Press, San Diego, CA. L.E. Jackson (Ed.).
    • (1997) Agricultural Ecology , pp. 79-116
    • Condon, A.G.1    Hall, A.E.2
  • 16
    • 0000830496 scopus 로고
    • Carbon-isotope discrimination is positively correlated with grain yield and dry matter production in field-grown wheat
    • Condon A.G., Richards R.A., Farquhar G.D. Carbon-isotope discrimination is positively correlated with grain yield and dry matter production in field-grown wheat. Crop Science 1987, 27:996-1001.
    • (1987) Crop Science , vol.27 , pp. 996-1001
    • Condon, A.G.1    Richards, R.A.2    Farquhar, G.D.3
  • 17
    • 84970585388 scopus 로고
    • The effect of variation in soil water availability, vapour pressure deficit and nitrogen nutrition on carbon-isotope discrimination in wheat
    • Condon A.G., Richards R.A., Farquhar G.D. The effect of variation in soil water availability, vapour pressure deficit and nitrogen nutrition on carbon-isotope discrimination in wheat. Australian Journal of Agricultural Research 1992, 43:935-947.
    • (1992) Australian Journal of Agricultural Research , vol.43 , pp. 935-947
    • Condon, A.G.1    Richards, R.A.2    Farquhar, G.D.3
  • 18
    • 0000521479 scopus 로고
    • Relationships between carbon-isotope discrimination, water use efficiency and transpiration efficiency for dryland wheat
    • Condon A.G., Richards R.A., Farquhar G.D. Relationships between carbon-isotope discrimination, water use efficiency and transpiration efficiency for dryland wheat. Australian Journal of Agricultural Research 1993, 44:1693-1711.
    • (1993) Australian Journal of Agricultural Research , vol.44 , pp. 1693-1711
    • Condon, A.G.1    Richards, R.A.2    Farquhar, G.D.3
  • 21
    • 0039891461 scopus 로고
    • The relative role of stomata in transpiration and assimilation
    • Cowan I.I., Troughton J.H. The relative role of stomata in transpiration and assimilation. Planta 1971, 97:323-336.
    • (1971) Planta , vol.97 , pp. 323-336
    • Cowan, I.I.1    Troughton, J.H.2
  • 22
    • 0004561081 scopus 로고
    • Field studies of the conductance of wheat leaves and transpiration
    • Denmead O.T., Millar B.D. Field studies of the conductance of wheat leaves and transpiration. Agronomy Journal 1976, 68:307-311.
    • (1976) Agronomy Journal , vol.68 , pp. 307-311
    • Denmead, O.T.1    Millar, B.D.2
  • 23
    • 0034959279 scopus 로고    scopus 로고
    • Sowing date and nitrogen input influence nitrogen-use efficiency in spring bread and durum wheat genotypes
    • Ehdaie B., Shakiba M., Waines J. Sowing date and nitrogen input influence nitrogen-use efficiency in spring bread and durum wheat genotypes. Journal of Plant Nutrition 2001, 24:899-919.
    • (2001) Journal of Plant Nutrition , vol.24 , pp. 899-919
    • Ehdaie, B.1    Shakiba, M.2    Waines, J.3
  • 24
    • 0021549457 scopus 로고
    • Isotopic composition of plant carbon correlates with water use efficiency of wheat genotypes
    • Farquhar G.D., Richards R.S. Isotopic composition of plant carbon correlates with water use efficiency of wheat genotypes. Australian Journal of Plant Physiology 1984, 11:539-552.
    • (1984) Australian Journal of Plant Physiology , vol.11 , pp. 539-552
    • Farquhar, G.D.1    Richards, R.S.2
  • 25
    • 0020450570 scopus 로고
    • On the relationship between carbon isotope discrimination and the intercellular carbon dioxide concentration in leaves
    • Farquhar G.D., O'Leary M.H., Berry J.A. On the relationship between carbon isotope discrimination and the intercellular carbon dioxide concentration in leaves. Australian Journal of Plant Physiology 1982, 9:121-137.
    • (1982) Australian Journal of Plant Physiology , vol.9 , pp. 121-137
    • Farquhar, G.D.1    O'Leary, M.H.2    Berry, J.A.3
  • 27
    • 0000592178 scopus 로고
    • Leaf-age effects on stomatal conductance
    • Stanford University Press, California, E. Zeiger, G.D. Farquhar, I.R. Cowan (Eds.)
    • Field C.B. Leaf-age effects on stomatal conductance. Stomatal Function 1987, Stanford University Press, California. E. Zeiger, G.D. Farquhar, I.R. Cowan (Eds.).
    • (1987) Stomatal Function
    • Field, C.B.1
  • 28
    • 39049151158 scopus 로고    scopus 로고
    • The importance of grain or kernel number in wheat: a reply to Sinclair and Jamieson
    • Fischer R.A. The importance of grain or kernel number in wheat: a reply to Sinclair and Jamieson. Field Crops Research 2008, 105:15-21.
    • (2008) Field Crops Research , vol.105 , pp. 15-21
    • Fischer, R.A.1
  • 29
    • 0032446474 scopus 로고    scopus 로고
    • Wheat yield progress associated with higher stomatal conductance and photosynthetic rate, and cooler canopies
    • Fischer R.A., Rees D., Sayre K.D., Lu Z.-M., Condon A.G., Larque Saavedra A. Wheat yield progress associated with higher stomatal conductance and photosynthetic rate, and cooler canopies. Crop Science 1998, 38:1475-1476.
    • (1998) Crop Science , vol.38 , pp. 1475-1476
    • Fischer, R.A.1    Rees, D.2    Sayre, K.D.3    Lu, Z.-M.4    Condon, A.G.5    Larque Saavedra, A.6
  • 30
    • 0345360628 scopus 로고
    • Leaf area estimates from measurements of photosynthetically active radiation in wheat canopies
    • Fuchs M., Asrar G., Kanemasu E.T. Leaf area estimates from measurements of photosynthetically active radiation in wheat canopies. Agricultural and Forest Meteorology 1984, 32:13-22.
    • (1984) Agricultural and Forest Meteorology , vol.32 , pp. 13-22
    • Fuchs, M.1    Asrar, G.2    Kanemasu, E.T.3
  • 32
    • 38249002324 scopus 로고
    • Effect of drought on yield and yield components of wheat and triticale
    • Giunta F., Motzo R., Deidda M. Effect of drought on yield and yield components of wheat and triticale. Field Crops Research 1993, 33:399-409.
    • (1993) Field Crops Research , vol.33 , pp. 399-409
    • Giunta, F.1    Motzo, R.2    Deidda, M.3
  • 33
    • 0029137104 scopus 로고
    • Effects of drought on leaf area development, biomass production and nitrogen uptake of durum wheat grown in a Mediterranean environment
    • Giunta F., Motzo R., Deidda M. Effects of drought on leaf area development, biomass production and nitrogen uptake of durum wheat grown in a Mediterranean environment. Australian Journal of Agricultural Research 1995, 46:99-111.
    • (1995) Australian Journal of Agricultural Research , vol.46 , pp. 99-111
    • Giunta, F.1    Motzo, R.2    Deidda, M.3
  • 34
    • 55949133329 scopus 로고    scopus 로고
    • Comparison of temperate cereals and grain legumes in a Mediterranean environment
    • Giunta F., Motzo R., Pruneddu G. Comparison of temperate cereals and grain legumes in a Mediterranean environment. Agricultural Medicine 2003, 133:234-248.
    • (2003) Agricultural Medicine , vol.133 , pp. 234-248
    • Giunta, F.1    Motzo, R.2    Pruneddu, G.3
  • 35
    • 37149055480 scopus 로고    scopus 로고
    • Has long term selection for yield in durum wheat also induced changes in leaf and canopy traits?
    • Giunta F., Motzo R., Pruneddu G. Has long term selection for yield in durum wheat also induced changes in leaf and canopy traits?. Field Crops Research 2008, 106:68-76.
    • (2008) Field Crops Research , vol.106 , pp. 68-76
    • Giunta, F.1    Motzo, R.2    Pruneddu, G.3
  • 36
    • 55949116354 scopus 로고    scopus 로고
    • Radiation interception and biomass and nitrogen accumulation in different cereal and grain legume species
    • Giunta F., Pruneddu G., Motzo R. Radiation interception and biomass and nitrogen accumulation in different cereal and grain legume species. Field Crops Research 2009, 110:76-84.
    • (2009) Field Crops Research , vol.110 , pp. 76-84
    • Giunta, F.1    Pruneddu, G.2    Motzo, R.3
  • 38
    • 84886562184 scopus 로고
    • Performance of triticale in comparison with barley and wheat in a semi-arid Mediterranean region
    • Hadjichristodoulou A. Performance of triticale in comparison with barley and wheat in a semi-arid Mediterranean region. Experimental Agriculture 1984, 20:41-51.
    • (1984) Experimental Agriculture , vol.20 , pp. 41-51
    • Hadjichristodoulou, A.1
  • 43
    • 0031953311 scopus 로고    scopus 로고
    • Stomatal control of photosynthesis and transpiration
    • Jones H.G. Stomatal control of photosynthesis and transpiration. Journal of Experimental Botany 1998, 49:387-398.
    • (1998) Journal of Experimental Botany , vol.49 , pp. 387-398
    • Jones, H.G.1
  • 44
    • 33645074744 scopus 로고    scopus 로고
    • What is water use efficiency?
    • Blackwell Publishing Ltd., Oxford, UK, M.A. Bacon (Ed.)
    • Jones H.G. What is water use efficiency?. Water Use Efficiency in Plant Biology 2004, 27-41. Blackwell Publishing Ltd., Oxford, UK. M.A. Bacon (Ed.).
    • (2004) Water Use Efficiency in Plant Biology , pp. 27-41
    • Jones, H.G.1
  • 45
    • 0001903202 scopus 로고
    • Analysis of adaptation of barley, triticale, durum and bread wheat under Mediterranean conditions
    • Josephides C. Analysis of adaptation of barley, triticale, durum and bread wheat under Mediterranean conditions. Euphytica 1993, 65:1-8.
    • (1993) Euphytica , vol.65 , pp. 1-8
    • Josephides, C.1
  • 48
    • 0028042877 scopus 로고
    • Variation in temperate cereals in rain-fed environments I. Grain yield, biomass and agronomic characteristics
    • López-Castaňeda C., Richards R. Variation in temperate cereals in rain-fed environments I. Grain yield, biomass and agronomic characteristics. Field Crops Research 1994, 37:51-62.
    • (1994) Field Crops Research , vol.37 , pp. 51-62
    • López-Castaňeda, C.1    Richards, R.2
  • 49
    • 0028311782 scopus 로고
    • Variation in temperate cereals in rain-fed environments III. Water use and water-use efficiency
    • López-Castaňeda C., Richards R. Variation in temperate cereals in rain-fed environments III. Water use and water-use efficiency. Field Crops Research 1994, 39:85-98.
    • (1994) Field Crops Research , vol.39 , pp. 85-98
    • López-Castaňeda, C.1    Richards, R.2
  • 50
    • 0000781739 scopus 로고
    • Solar radiation and productivity in tropical ecosystems
    • Monteith J.I. Solar radiation and productivity in tropical ecosystems. Journal of Applied Ecology 1972, 9:747-766.
    • (1972) Journal of Applied Ecology , vol.9 , pp. 747-766
    • Monteith, J.I.1
  • 51
    • 0035213750 scopus 로고    scopus 로고
    • Factors affecting the genotype×environment interaction in spring triticale grown in a Mediterranean environment
    • Motzo R., Giunta F., Deidda M. Factors affecting the genotype×environment interaction in spring triticale grown in a Mediterranean environment. Euphytica 2001, 121:317-324.
    • (2001) Euphytica , vol.121 , pp. 317-324
    • Motzo, R.1    Giunta, F.2    Deidda, M.3
  • 52
    • 77955895129 scopus 로고    scopus 로고
    • New phenotyping methods for screening wheat and barley for beneficial responses to water deficit
    • Munns R., James R.A., Sirault X.R.R., Furbank R.T., Jones H.G. New phenotyping methods for screening wheat and barley for beneficial responses to water deficit. Journal of Experimental Botany 2010, 61:3499-3507.
    • (2010) Journal of Experimental Botany , vol.61 , pp. 3499-3507
    • Munns, R.1    James, R.A.2    Sirault, X.R.R.3    Furbank, R.T.4    Jones, H.G.5
  • 53
    • 33745952271 scopus 로고
    • Carbon isotope fractionation in plants
    • O'Leary M.H. Carbon isotope fractionation in plants. Phytochemistry 1981, 20:553-567.
    • (1981) Phytochemistry , vol.20 , pp. 553-567
    • O'Leary, M.H.1
  • 54
    • 0042306905 scopus 로고
    • Effect of forage harvest on grain yield and agronomic performance of winter triticale, wheat and rye
    • Poysa V.W. Effect of forage harvest on grain yield and agronomic performance of winter triticale, wheat and rye. Canadian Journal of Plant Science 1985, 65:879-888.
    • (1985) Canadian Journal of Plant Science , vol.65 , pp. 879-888
    • Poysa, V.W.1
  • 56
    • 84944836456 scopus 로고
    • Model for predicting evaporation from a row crop with incomplete cover
    • Ritchie J.T. Model for predicting evaporation from a row crop with incomplete cover. Water Resources Research 1972, 8:1204-1213.
    • (1972) Water Resources Research , vol.8 , pp. 1204-1213
    • Ritchie, J.T.1
  • 57
    • 0030220459 scopus 로고    scopus 로고
    • Soil-water threshold for the response of leaf expansion and gas exchange: a review
    • Sadras V.O., Milroy S.P. Soil-water threshold for the response of leaf expansion and gas exchange: a review. Field Crops Research 1996, 47:253-266.
    • (1996) Field Crops Research , vol.47 , pp. 253-266
    • Sadras, V.O.1    Milroy, S.P.2
  • 58
    • 33747842233 scopus 로고    scopus 로고
    • Effect of supplemental irrigation on leaf stomatal conductance of field-grown wheat in northern Syria
    • Sato T., Abdalla O.S., Oweis T.Y., Sakuratani T. Effect of supplemental irrigation on leaf stomatal conductance of field-grown wheat in northern Syria. Agricultural Water Management 2006, 85:105-112.
    • (2006) Agricultural Water Management , vol.85 , pp. 105-112
    • Sato, T.1    Abdalla, O.S.2    Oweis, T.Y.3    Sakuratani, T.4
  • 59
    • 0029167528 scopus 로고
    • Carbon isotope discrimination and grain yield for three bread wheat germplasm groups grown at different levels of water stress
    • Sayre K.D., Acevedo E., Austin R.B. Carbon isotope discrimination and grain yield for three bread wheat germplasm groups grown at different levels of water stress. Field Crops Research 1995, 41:45-54.
    • (1995) Field Crops Research , vol.41 , pp. 45-54
    • Sayre, K.D.1    Acevedo, E.2    Austin, R.B.3
  • 60
    • 41149126663 scopus 로고    scopus 로고
    • Carbon isotopes and water use efficiency: sense and sensitivity
    • Seibt U., Rajabi A., Griffiths H., Berry J.A. Carbon isotopes and water use efficiency: sense and sensitivity. Oecologia 2008, 155:441-454.
    • (2008) Oecologia , vol.155 , pp. 441-454
    • Seibt, U.1    Rajabi, A.2    Griffiths, H.3    Berry, J.A.4
  • 62
    • 0342386117 scopus 로고
    • Stomatal behavior of wheat cultivars in relation to their transpiration, photosynthesis, and yield
    • Shimshi D., Ephrat J. Stomatal behavior of wheat cultivars in relation to their transpiration, photosynthesis, and yield. Agronomy Journal 1975, 67:326-331.
    • (1975) Agronomy Journal , vol.67 , pp. 326-331
    • Shimshi, D.1    Ephrat, J.2
  • 64
    • 0006757962 scopus 로고
    • Relationship between wheat yield and foliage temperature: theory and its application to infrared measurements
    • Smith R.C.G., Barrs H.D., Steiner J.L., Stapper M. Relationship between wheat yield and foliage temperature: theory and its application to infrared measurements. Agricultural and Forest Meteorology 1985, 36:129-143.
    • (1985) Agricultural and Forest Meteorology , vol.36 , pp. 129-143
    • Smith, R.C.G.1    Barrs, H.D.2    Steiner, J.L.3    Stapper, M.4
  • 66
    • 0031918674 scopus 로고    scopus 로고
    • Variability among species of stomatal control under fluctuating soil water status and evaporative demand: modeling isohydric and anisohydric behaviours
    • Tardieu F., Simonneau T. Variability among species of stomatal control under fluctuating soil water status and evaporative demand: modeling isohydric and anisohydric behaviours. Journal of Experimental Botany 1998, 49:419-432.
    • (1998) Journal of Experimental Botany , vol.49 , pp. 419-432
    • Tardieu, F.1    Simonneau, T.2
  • 67
    • 0006826314 scopus 로고
    • Stress measurements using foliage temperatures
    • Walker G.K., Hatfield J.L. Stress measurements using foliage temperatures. Agronomy Journal 1983, 75:623-629.
    • (1983) Agronomy Journal , vol.75 , pp. 623-629
    • Walker, G.K.1    Hatfield, J.L.2
  • 68
    • 0004208813 scopus 로고
    • Leaf gas exchange and plant growth of winter rye, triticale, and wheat under contrasting temperature regimes
    • Winzeler M., McCullough D.E., Hunt L.A. Leaf gas exchange and plant growth of winter rye, triticale, and wheat under contrasting temperature regimes. Crop Science 1989, 29:1256-1260.
    • (1989) Crop Science , vol.29 , pp. 1256-1260
    • Winzeler, M.1    McCullough, D.E.2    Hunt, L.A.3
  • 69
    • 84981809484 scopus 로고
    • A decimal code for the growth stages of cereals
    • Zadoks J.C., Chang T.T., Konzak C.F. A decimal code for the growth stages of cereals. Weed Research 1974, 14:415-421.
    • (1974) Weed Research , vol.14 , pp. 415-421
    • Zadoks, J.C.1    Chang, T.T.2    Konzak, C.F.3
  • 70
    • 0031871055 scopus 로고    scopus 로고
    • Water-use efficiency and transpiration efficiency of wheat under rain-fed conditions and supplemental irrigation in a Mediterranean-type environment
    • Zhang H., Oweis T.Y., Garabet S., Pala M. Water-use efficiency and transpiration efficiency of wheat under rain-fed conditions and supplemental irrigation in a Mediterranean-type environment. Plant and Soil 1998, 201:295-305.
    • (1998) Plant and Soil , vol.201 , pp. 295-305
    • Zhang, H.1    Oweis, T.Y.2    Garabet, S.3    Pala, M.4


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