Authors: Naïma Ait Aabd Fouad Msanda Abdelhamid El Mousadik
Publish Date: 2013/07/09
Volume: 195, Issue: 2, Pages: 157-167
Abstract
This investigation was carried out to determine the variability in oil content with the aim to identify genotypes of argan tree expressing high oil yield The 150 argan trees were collected from five provenances in south west of Morocco over 3 years 2008–2010 and were screened from their oil content using Soxhlet method based on the 840 samples Univariate and multivariate analysis were used to study the genetic variation between and within provenances According to the results on the mean of the 3 years the oil content was ranged from 3845 to 6254 The genotypes from Aoulouz and Had Dra expressing high oil yield Variance components for fruit seed kernel traits and oil content showed significant differences P 001 among years provenances genotypes and their interaction Principal component analysis proved that fruit seed kernel weight traits are correlated with oil content and are discriminate characters between the genotypes The results of the cluster analysis support the results of the principal component analysis showing no correlation between oil content with geographical localization parameters For all the promising genotypes at least 25 were found to be better and exceed the oil mean of the provenance for 3 years So 31 promising elite genotypes were preselected and open new ways for future comparative test of them in diverse environments
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