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The Effect of Plant Water Status on the Chemical Composition of Pistachio Nuts ( Pistacia vera L. Cultivar Bianca)

Author

Listed:
  • Adele Amico Roxas

    (Department of Plant Sciences, University of California, Davis, One Shields Ave., Davis, CA 95616, USA)

  • Giulia Marino

    (Department of Plant Sciences, University of California, Davis, One Shields Ave., Davis, CA 95616, USA)

  • Giuseppe Avellone

    (Department of Molecular and Biomolecular Science and Technology, University of Palermo, Via Archirafi 32, 90123 Palermo, Italy)

  • Tiziano Caruso

    (Department of Agricultural, Food and Forest Sciences, University of Palermo, Viale delle Scienze Ed. 4, 90128 Palermo, Italy)

  • Francesco Paolo Marra

    (Department of Agricultural, Food and Forest Sciences, University of Palermo, Viale delle Scienze Ed. 4, 90128 Palermo, Italy)

Abstract

Pistachio nuts are worldwide appreciated for their chemical and organoleptic profiles. There are several studies on the influence of irrigation on pistachio productivity, whereas there are little available data on the influence on nut quality. In this study we characterized some qualitative traits of pistachio nuts cultivar Bianca in Mediterranean environment and how plant water status affected them. Water status had a positive and significant influence on the chlorophylls content, nuts from less stressed trees showed higher values of chlorophyll a (14.7 mg/100 g) and b (21.1 mg/100 g) compared than more stressed trees (9.3 and 11.5 mg/100 g for a and b, respectively). Solid phase microextraction technique in headspace followed by gas chromatography/mass spectrometry (HS-SPME GC/MS) identified seventeen different compounds with terpenes being the major class of volatiles; the most abundant were α-Pinene (range 26.2–35 μg/g), D-Limonene (2.8–3.3 μg/g), 2-Carene (1.8–3 μg/g) and β-Myrcene (0.6–1.4 μg/g). Overall, we found higher level of terpenes in less stressed trees and for α-Pinene and β-Myrcene differences were significant. The fatty acid composition analysis revealed oleic acid (70.1–71.1%), linoleic acid (13.5–14.4%) and palmitic acid (9.6–9.8%) as the most abundant compounds, but tree water status did not influence their concentration. Overall, the data reported proved that supplemental irrigation contributes to increase pistachio nut quality.

Suggested Citation

  • Adele Amico Roxas & Giulia Marino & Giuseppe Avellone & Tiziano Caruso & Francesco Paolo Marra, 2020. "The Effect of Plant Water Status on the Chemical Composition of Pistachio Nuts ( Pistacia vera L. Cultivar Bianca)," Agriculture, MDPI, vol. 10(5), pages 1-11, May.
    • Handle: RePEc:gam:jagris:v:10:y:2020:i:5:p:167-:d:357630
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    References listed on IDEAS

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    1. Memmi, H. & Gijón, M.C. & Couceiro, J.F. & Pérez-López, D., 2016. "Water stress thresholds for regulated deficit irrigation in pistachio trees: Rootstock influence and effects on yield quality," Agricultural Water Management, Elsevier, vol. 164(P1), pages 58-72.
    2. Gijón, M.C. & Guerrero, J. & Couceiro, J.F. & Moriana, A., 2009. "Deficit irrigation without reducing yield or nut splitting in pistachio (Pistacia vera cv Kerman on Pistacia terebinthus L.)," Agricultural Water Management, Elsevier, vol. 96(1), pages 12-22, January.
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