## 4 Conclusions  
The use of deficit irrigation did not adversely affect the quality of the fruit from all the studied cultivars in this work; it even resulted in improved firmness.  
The system of cultivation had an impact on several parameters defining fruit quality. The blueberries grown under plastic tunnels showed a decrease in acidity and an increase in soluble solids content compared to those grown in open fields.  
A significant effect of genotype was observed on most of the studied parameters. The berries from the experimental cultivars (V2 and V3) were less sour, harder and bigger than those from the 'Rocio' cultivar.  
The results lead to the conclusion that the use of deficit irrigation and plastic tunnels in blueberry cultivation is a good option for obtaining fruits with comparable or better quality characteristics.  
Conceptualization, J.L.M. and J.M.M.-R; methodology, V.C. and J.M.M.-R.; validation, J.L.O.-D., G.P.-C. and J.M.M.-R; formal analysis, J.L.O.-D., V.C. and J.M.M.-R.; investigation J.L.O.-D., G.P.-C., V.C., J.L.M. and J.M.M.-R.; resources, J.L.O.-D., G.P.-C., V.C., J.L.M. and J.M.M.-R; data curation, J.L.O.-D., V.C. and J.M.M.-R.; writing--original draft preparation, J.L.O.-D., G.P.-C., V.C. and J.M.M.-R.; writing--review and editing, J.L.O.-D., G.P.-C., V.C., J.L.M. and J.M.M.-R.; supervision, J.L.M. and J.M.M.-R; project administration, J.L.M. and J.M.M.-R. All authors have read and agreed to the published version of the manuscript.  
This research received no external funding.  
\begin{table}
\begin{tabular}{c c c c c c c c c c} \hline \hline  & & **SSC** & **TA** & **pH** & **Firmness** & **h\({}^{\circ}\)** & **C* & **L* & **Weight** & **Size** \\ \hline \multirow{2}{*}{**’Rocio’**} & 2011 & 13.69 b,c & 0.44 b & 3.84 c & 1.52 & 276.1 b & 4.03 d & 30.22 & 1.92 e & 14.10 c \\  & 2012 & 15.84 a & 0.59 a & 3.39 d & 1.71 & 283.0 a & 5.07 b,c & 31.28 & 2.28 c,d & 16.00 b \\ \hline \multirow{2}{*}{**V2**} & 2011 & 14.11 b & 0.33 c & 4.06 b & 1.77 & 267.0 c & 5.50 a,b & 34.98 & 2.43 b,c & 15.74 b \\  & 2012 & 13.2 c,d & 0.50 b & 3.49 d & 2.17 & 269.8 c & 5.92 a & 35.81 & 2.12 d,e & 15.94 b \\ \hline \multirow{2}{*}{**V3**} & 2011 & 13.17 c,d & 0.19 d & 4.53 a & 1.66 & 268.3 c & 4.53 c & 31.50 & 3.03 a & 16.94 a \\  & 2012 & 12.61 d & 0.50 b & 3.45 d & 2.01 & 275.4 b & 5.44 a,b & 31.77 & 2.55 b & 16.94 a \\ \hline \hline \end{tabular}  
* Different letters within a column indicate significant differences by LSD test. SSC: soluble solids content (“Brix); TA: tittatable acidity (% citric acid); firmness (N); L*: lightness; h\({}^{\circ}\): hue angle; C*: chroma; weight (g); size (mm).  
\end{table}
Table 4: Effect of genotype and sampling year on the parameters evaluated for blueberry fruits.  
**Acknowledgments:** [PERSON] was granted a research contract funded by the Andalusian Institute of Agricultural and Fisheries Research and Training (IFAPA), inside the National Youth Guarantee System through the European Social Fund (ESF) and the Youth Employment Initiative (YEI). [PERSON] was granted a research contract funded by IFAPA and the ESF (03/2014 to 03/2017) and a postdoctoral research contract \"[PERSON] de la Cierva-Incorporacion\" funded by the Spanish Ministry of Economy and Competitiveness (FJCI-2015-26433). [PERSON] is grateful to IFAPA for the fellowship obtained for the development of her Ph.D. thesis. The authors would like to thank [PERSON] for his help in the statistical analysis.  
**Conflicts of Interest:** The authors declare no conflict of interest.