Dataset on the organic acids, sulphate, total nitrogen and total chlorophyll contents of two lettuce cultivars grown hydroponically using nutrient solutions of variable macrocation ratios

Christophe El-Nakhel; Antonio Pannico; Marios C Kyriacou; Spyridon A Petropoulos; Maria Giordano; Giuseppe Colla; Antonio Dario Troise; Paola Vitaglione; Stefania De Pascale; Youssef Rouphael

doi:10.1016/j.dib.2020.105135

Dataset on the organic acids, sulphate, total nitrogen and total chlorophyll contents of two lettuce cultivars grown hydroponically using nutrient solutions of variable macrocation ratios

Data Brief. 2020 Jan 14:29:105135. doi: 10.1016/j.dib.2020.105135. eCollection 2020 Apr.

Affiliations

¹ Department of Agricultural Sciences, University of Naples Federico II, Portici, Italy.
² Department of Vegetable Crops, Agricultural Research Institute, Nicosia, Cyprus.
³ Department of Agriculture, Crop Production and Rural Environment, University of Thessaly, Volos, Greece.
⁴ Department of Agriculture and Forest Sciences, University of Tuscia, Viterbo, Italy.

Abstract

The data presented in this article were derived from dry and fresh samples of soilless-grown butterhead lettuce (Lactuca sativa L. var. Capitata). Organic acids, total nitrogen, sulphate and total chlorophyll concentrations varied in response to cultivar (red or green butterhead Salanova) and to nutrient solution macrocation ratios (high proportion of K, Ca or Mg). Kjeldahl, spectrophotometry and ion chromatography were the principal employed methods. Data of total nitrogen and sulphate concentrations contribute to the understanding of macrocation uptake by plants and may drive prospective relevant research. Organic acids are indicators of plant tolerance to stress, including nutrient deficiencies, and the variability of their concentrations provide insights to plant stress physiology. The data reported in this paper are related to the research article "The bioactive profile of lettuce produced in a closed soilless system as configured by combinatorial effects of genotype and macrocation supply composition", authored by El-Nakhel et al. (2020) [1].

Keywords: Citrate; Growth chamber; Isocitrate; Lactuca sativa.L; Malate; NFT; Oxalate; Tartrate.