Clonal Selection of Olive Tree Variety "Chemlali Sfax": Preliminary Results

Kamoun, Naziha Grati; Khlif, M.; Ayadi, M.; Karray, B.

doi:10.17660/actahortic.2002.586.23

Cited by 9 publications

(1 citation statement)

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“…This is particularly useful for the widely cultivated (two-third of total olive area) cultivars Chemlali. Chemlali cultivars are vigorous and well adapted to arid regions but give oil, , 2002b having undesirable acid composition (low levels of oleic acid and high level of palmitic and linoleic acid).…”

Section: Resultsmentioning

confidence: 99%

Genetic Diversity of Tunisian Olive Tree (Olea europaea L.) Cultivars Assessed by AFLP Markers

Grati-Kamoun¹,

Mahmoud

Rebaï

et al. 2006

Genet Resour Crop Evol

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About 29 olive (Olea europaea L.) cultivars including oil and table olive cultivars originating from Tunisia and other Mediterranean countries, were genotyped using amplified fragment length polymorphism (AFLP) DNA markers. This technique is a rapid and efficient method for producing DNA fingerprints. Using nine AFLP primer combinations, we produced a total of 410 AFLP markers, among which 172 revealed polymorphism. The results demonstrated a high degree of polymorphism in the olive germplasm we examined with an average of 39%. These AFLP markers were analyzed to estimate genetic distances between pairs of cultivars using Jaccard's similarity coefficient. Furthermore, cluster and principal component analyses were performed in order to identify the genetic variation patterns. Two main groups were obtained: one comprising primarily small-fruited cultivars grown mainly for oil production and the other comprising large fruited cultivars (regardless of their end-use). Our results show no evidence of clustering of olive cultivars according to their geographic origin.

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Section: Resultsmentioning

confidence: 99%

Genetic Diversity of Tunisian Olive Tree (Olea europaea L.) Cultivars Assessed by AFLP Markers

Grati-Kamoun¹,

Mahmoud

Rebaï

et al. 2006

Genet Resour Crop Evol

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Effect of Controlled Crossing on the Triglyceride and Fatty Acid Composition of Virgin Olive Oils

Dabbou

Rjiba

Echbili

et al. 2010

Chemistry & Biodiversity

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Our study reports the triglyceride (triacylglycerol, TAG) composition of five new Tunisian virgin olive oil cultivars obtained through controlled crossings of the cultivar (cv.) Chemlali Sfax. These cultivars have been selected among a progeny of 500 olive descendants, based on an evaluation of the fatty-acid (FA) composition of their oils. Among these samples, two were derived from the crossing with the cv. Sigoise as pollinator (SM634) or pollen acceptor (SM1110) and the others from the crossing with the cv. Meski as pollen acceptor (SM513, SM514, and SM517). The five descendants were characterized by a good fat value, a balanced FA composition, and a high content of triolein, varying between 26.9 (SM514) and 45.46% (SM1110). They had an improved FA composition as compared to that of the cv. Chemlali Sfax and their fruits were slightly bigger. The principal component analysis suggested that the TAG variables were more suitable than the total FAs for an optimum classification of the cultivar samples analyzed. The cultivars obtained through the crossing with the cv. Sigoise (as pollen acceptor or pollinator) had a more favorable composition of FAs and TAG than those obtained through the crossing with the cv. Meski, which indicated that genetic factors had the most important influence on the quality of the virgin olive oils.

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Comparison of the Chemical Composition and the Organoleptic Profile of Virgin Olive Oil from Two Wild and Two Cultivated Tunisian Olea europaea

Dabbou¹,

Dabbou²,

Selvaggini

et al. 2011

Chemistry & Biodiversity

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With the aim to select new olive cultivars with superior physical and chemical properties than the cultivar Chemlali Sfax, the present study focused on the comparison of the chemical composition and the sensory profile of the virgin olive oils (VOOs) of two wild olive trees (Oleasters K and M) with those of VOOs obtained from Chemlali Sfax and Neb Jmel olive cultivars, all growing in the coastal region of Tunisia. Despite the variability in the chemical composition (fatty acids, pigments, and phenolic and volatile compounds) and the organoleptic profile of the VOOs of the oleasters and the cultivars, the quality indices (free fatty acids, peroxide value, and spectrophotometric indices K232 and K270) as well as the fatty acid composition of all VOOs studied met the commercial standards. Both the α-tocopherol and phenol contents varied between the genotypes. The Neb Jmel and Oleaster K VOOs had more than two times higher total phenol levels than the Chemlali Sfax and Oleaster M VOOs. Also the contents of volatile compounds differed between the olive oils studied. Chemlali Sfax and Oleaster K oils were more abundant in aldehydes, whereas Oleaster M VOO had higher contents of alcohols. These results were confirmed by a sensorial analysis showing that the later oil was deprived for consumption despite its abundance in α-tocopherol. In conclusion, the oleasters studied revealed to be interesting, since they produced oils with good quality characteristics in terms of minor compounds (phenols and volatiles) compared to the Chemlali Sfax cultivar.

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Clonal Selection of Olive Tree Variety "Chemlali Sfax": Preliminary Results

Cited by 9 publications

References 0 publications

Genetic Diversity of Tunisian Olive Tree (Olea europaea L.) Cultivars Assessed by AFLP Markers

Genetic Diversity of Tunisian Olive Tree (Olea europaea L.) Cultivars Assessed by AFLP Markers

Effect of Controlled Crossing on the Triglyceride and Fatty Acid Composition of Virgin Olive Oils

Comparison of the Chemical Composition and the Organoleptic Profile of Virgin Olive Oil from Two Wild and Two Cultivated Tunisian Olea europaea

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