Grasas y Aceites, Vol 66, No 4 (2015)

Advanced olive selections with enhanced quality for minor constituents

L. Velasco, R. De la Rosa, L. León

DOI: http://dx.doi.org/10.3989/gya.0227151

Abstract


Squalene, phytosterols and tocopherols are minor constituents of paramount importance for the olive fruit and oil quality. The objective of this research was to conduct a two-year evaluation of these compounds in the fruits of seven advanced breeding selections. They were mainly selected for early bearing and high oil content from progenies of crosses between the cultivars ‘Arbequina’ and ‘Picual’. An analysis of variance showed high genotypic effects, non-significant year effects, and genotype x year interactions of low magnitude. The selections showed great variability for the traits, surpassing in some cases the parental values. One selection with total tocopherol content of 263 mg·kg−1 fruit flesh, compared to a maximum of 148 mg·kg −1 in the parents, and another one with Δ5-avenasterol concentration of 30.7% of total sterols, compared to a maximum of 22.1% in the parents, were the most relevant phenotypes. These selections may play an important role for improving olive fruit and oil quality for specific market niches.

Keywords


Breeding; Fruit quality; Olive; Phytosterols; Squalene; Tocopherols

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