Evaluation of variability in argan oil content through different environments and preselection of elite genotypes

Aabd, Naima Ait; Msanda, Fouad; Mousadik, Abdelhamid El

doi:10.1007/s10681-013-0969-0

Cited by 12 publications

(5 citation statements)

References 27 publications

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“…This tree has important socio-economic and ecological roles in this area, in which it also plays a great role in the biodiversity of the forest's ecosystem (Msanda et al 2005). It is potentially a very important tree species for vegetable oil (Ait Aabd et al 2014), extracted from the kernels of argan seeds, which could generate a great interest from the horticultural industry. Therefore, for a better understanding of how A. spinosa ecotypes differ in their tolerance to drought stress, measurements at physiological and biochemical levels are required.…”

Section: Introductionmentioning

confidence: 99%

Differential physiological and antioxidative responses to drought stress and recovery among four contrasting Argania spinosa ecotypes

Chakhchar

Lamaoui

Aissam

et al. 2016

Journal of Plant Interactions

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Our study was undertaken to ascertain whether the change of the water status and the activation of superoxide dismutase and their isoenzymes in Argan tree can support edaphic drought tolerance and its recovery under rehydration. An experiment was conducted on four contrasting ecotypes of Argania spinosa plants: two contrasting coastal ecotypes (Admine (Adm) and Rabia (Rab)) and two contrasting inland ecotypes (Aoulouz (Alz) and Lakhssas (Lks)). Drought stress significantly decreased the leaf water potential and stomatal conductance in the four contrasted ecotypes. In terms of biochemical responses, significant accumulation of carbonyl groups, hydrogen peroxide and superoxide radical has been recorded in the leaves of stressed plants reflecting oxidative stress. In parallel, the activities of total superoxide dismutase (SOD) and their isoenzymes Cu/Zn-SOD, Cu/Zn-SOD and Fe-SOD were also found to have increased to scavenging ROS and protecting the cell against induced oxidative stress. The recovery kinetics of A. spinosa, as a response to rehydration, were significant and rapid. According to the traits having the most discriminating power, both inland ecotypes (Lks and Alz) showed a better upregulation of its protective mechanisms compared to coastal ecotypes (Rab and Adm). All these adaptive traits make the inland ecotypes as an elite resource of drought tolerance and might become the new focus of domestication research of argan tree in arid and semi-arid environments.

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Section: Introductionmentioning

confidence: 99%

Differential physiological and antioxidative responses to drought stress and recovery among four contrasting Argania spinosa ecotypes

Chakhchar

Lamaoui

Aissam

et al. 2016

Journal of Plant Interactions

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“…Despite the change in treatment, this ratio remains strictly less than 7 which removes any possible problem of argan filiform. The argan tree [Argania spinosa (L.)] as a spontaneous and endemic xerophilic species, wild and forming well-developed forests in the Souss plain in southwestern Morocco [59], is characterized by high genetic variability [60]. Despite their resistance to different climatic conditions over time [61], according to our study, we see that argan The ratio height/diameter (Figure 7) shows that all the argan seedlings have good robustness.…”

Section: Figurementioning

confidence: 50%

“…The argan tree [Argania spinosa (L.)] as a spontaneous and endemic xerophilic species, wild and forming well-developed forests in the Souss plain in southwestern Morocco [59], is characterized by high genetic variability [60]. Despite their resistance to different climatic conditions over time [61], according to our study, we see that argan behaves differently in terms of growth depending on the climate, the substrate and the parameter studied although the argan seedlings have only one origin.…”

Section: Figurementioning

confidence: 53%

Interactive Effect of Biochar and Bio-Compost on Starting Growth and Physiologic Parameters of Argan

Moussaoui

Bouqbis

2022

Sustainability

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The argan tree, which is found in southern Morocco, is characterized by environmental, economic and nutritional benefits, but the growth of this tree is very slow. This makes it necessary to find methods to accelerate its growth. A pot experiment was conducted to evaluate the effects of biochar (BC) and bio-compost (CP) each applied at the rate of 0, 3 and 6% (M/M) on starting growth of argan in fine silty soil for sixteen months. Main stem length, diameter, durability ratio, total length of all stems and number of sprouted shoots were measured every two months with two photosynthetic measurements spaced five months apart for each argan seedling. Despite the strong signs of epigenetic sensitivity and genetic variability across the argan behavior of each treatment depending on the duration and environmental conditions of the crop and the large standard deviations marked in all the tests that were conducted on the argan, some treatments showed interesting results, even in terms of the interaction between climatic conditions, type of treatment and type of test. The argan plants which were grown in the substrate at 6% BC 3% CP showed significant results for all the growth parameters studied and throughout the test. This mixture marked an average water holding capacity (WHC) of around 0.66 g H2O/g dw; the argan seedlings showed the best perimeter average, which exceeded 2.7 cm in the last measurement, with a ratio (height/diameter) strictly less than 7, which removes any possible problem of argan filiform. However, argan plants from all treatments were not stable in the growth characteristics studied; each treatment has advantages and disadvantages regarding argan. Transplantation and monitoring in the field of argan seedlings that have had interesting results are strongly recommended to see if the good starting growth influences their development in the field or if it is a temporary effect.

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“…Several studies were carried out and characterized the great genetic diversity of the argane tree (Msanda 1993 ;El Mousadik and Petit, 1996;Ait Aabd et al, 2013 ;Ait Aabd et al, 2014 ;Yatrib et al, 2015 ;Ait Aabd et al, 2019) and its geographical distribution (from sea level to 1400-1500 meters altitude). Since there is an intensive demand at international market level, it is obvious that policy makers in Morocco pays accentuate efforts for the conservation of this endemic and endangered species.…”

Section: Introductionmentioning

confidence: 99%

Study of compatibility and determination of the suitable pollinizer for Argane tree (Argania spinosaL.)

Tahiri

Mimouni

et al. 2021

Preprint

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During the breeding program studies, the pollen donor parents (pollinizers) were observed to be characterized by a strong flowering rate and very low fruit set, even after hand pollination. Then the notion of pollinizers in the argane species was born, first mentioned, checked, documented and confirmed like other conventional tree species. Since the argane tree is completely self-incompatible, the presence of compatible pollinizers is necessary for the fruit set. Indeed, pollinizers need to be selected accurately based on the synchronization of bloom periods and compatibility to receiver trees (female). The pollinizer is essential in any breeding program and for new orchard plantations. The current study was conducted on 13 argane genotypes including two pollinizers. The flowering period, bloom phenology, floral structure and fruit set of crossed genotypes were monitored, illustrated and a season phenogram was established. The pollen viability and germination were also evaluated. In order to test compatibility, the hand pollination using two selected pollinizer pollens was compared to open pollination. Then, the compatibility system was monitored and evaluated through analysis of crossing diallel programs and through the index of self-incompatibility. The flowering periods are genotype depending and one to three blooms have been observed during the two years study (2018-2019) and the argane tree is a tristylous species (Mesostylous, brevistylous and longistylous flowers). The in vitro tests showed that the pollen originated from crossed genotypes were viable and able to germinate. The cross-compatibility rate depends on cross associations and it varies from 39 to 84 %. In fact, this study showed that the effect of pollen-parent (xenia) occurs in all fruit components of argane tree. It was observed, for the first time, that both compatible pollinizers and xenic effects of pollen on argane fruit have occurred. Artificial pollination is currently feasible for breeding programs and the screening of elite genotypes. Then the selected pollinizer is quite required for the development of argane tree cropping.

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Evaluation of variability in argan oil content through different environments and preselection of elite genotypes

Cited by 12 publications

References 27 publications

Differential physiological and antioxidative responses to drought stress and recovery among four contrasting Argania spinosa ecotypes

Differential physiological and antioxidative responses to drought stress and recovery among four contrasting Argania spinosa ecotypes

Interactive Effect of Biochar and Bio-Compost on Starting Growth and Physiologic Parameters of Argan

Study of compatibility and determination of the suitable pollinizer for Argane tree (Argania spinosaL.)

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