مقالات علميةhttp://dspace.univ-msila.dz:8080//xmlui/handle/123456789/55842024-03-29T00:31:58Z2024-03-29T00:31:58ZREPRODUCTIVE BIOLOGY OF A DIVERSE APRICOT (PRUNUS ARMENIACA L.) GERMPLASM FROM THE REGIONS OF HODNA AND AURÈS IN ALGERIAATEK YounesNICOLÁS-ALMANSA MaríaEGEA Jose AMARTÍNEZ-GÓMEZ PedroBAHLOULI Fayçalhttp://dspace.univ-msila.dz:8080//xmlui/handle/123456789/283752022-03-23T10:41:41Z2022-01-01T00:00:00ZREPRODUCTIVE BIOLOGY OF A DIVERSE APRICOT (PRUNUS ARMENIACA L.) GERMPLASM FROM THE REGIONS OF HODNA AND AURÈS IN ALGERIA
ATEK Younes; NICOLÁS-ALMANSA María; EGEA Jose A; MARTÍNEZ-GÓMEZ Pedro; BAHLOULI Fayçal
Gametophytic self-incompatibility, governed by the S-locus, functions in Prunus species including the apricot to protect self-pollination of flowers. Knowledge of the S-genotypes in apricot cultivars is essential to establishing productive orchards, defining combinations of compatible cultivars.
Objective : In this study, reproductive biology of 92 apricot cultivated accessions from the regions of Aurés (semi-arid) and Hodna (semi-arid to arid) in Algeria has been evaluated.
Methods : The cultivated accessions assayed included local Algerian cultivars and French and Spanish introduced cultivars with kwon S-alleles. Percentage of fertilized flowers and fruit set was evaluated in field conditions by bagging. To identify the S-alleles associated with self-incompatibility, two pairs of specific primers were tested using PCR. This PCR-based molecular tool allows S-genotypes to be characterized quickly and efficiently.
Results : The origin of the apricot accessions does not influence the percentage of fertilized flowers and fruit set. Location and Year, however, have a significant influence. On the other hand, results showed a great diversity in terms of S-alleles in the Algerian germplasm. Some of these apricot cultivars are self-incompatible, and so to obtain a yield they need to be pollinated with cross-compatible cultivars.
Conclusion : Results indicate that Algerian apricots represent an interesting source of new self-compatible germplasm adapted to dry conditions for Mediterranean apricot breeding programs. Determination of the S-genotype might be considered as an important addition to a set of identity markers of apricot genetic resources
2022-01-01T00:00:00ZEffet de la méthode de récolte sur la production de propolis par l’abeille locale Apis mellifera intermissa en AlgérieH GuermahS HadjemH Zemihihttp://dspace.univ-msila.dz:8080//xmlui/handle/123456789/250142021-07-15T09:37:36Z2021-01-01T00:00:00ZEffet de la méthode de récolte sur la production de propolis par l’abeille locale Apis mellifera intermissa en Algérie
H Guermah; S Hadjem; H Zemihi
La propolis est l’un des produits de la ruche les moins disponibles sur le marché local en Algérie. Pourtant, la demande est de
plus importante vu la diversité des domaines où elle peut être utilisée. La production de la propolis présente plusieurs
avantages comme diversifier les produits de la ruche, améliorer le revenu des apiculteurs, etc. Le but de cette étude était
d’évaluer certains procédés de production de propolis par l’abeille locale Apis mellifera intermissa. Trois méthodes ont été
testées durant trois périodes différentes (1 août-10 septembre, 20 septembre-31 octobre et 1 novembre-10 décembre) dans la
région de Tizi-Ouzou en Algérie : Méthode I ou grille à propolis du commerce, Méthode II ou collecteur de propolis
intelligent et Méthode III proposée par Hanachi Zemihi.
Les 3 principales espèces butinées étaient l’asphodèle, le genêt
épineux et la lavande. Globalement, pour l’ensemble des 3 périodes, il n’a pas été noté de différence significative entre les
quantités totales moyennes récoltées par méthode ce qui indique que l’application de ces méthodes ne semble pas avoir eu
d’influence sur la quantité totale de propolis produite. Mais il y a eu des différences significatives entre certaines périodes et
selon la méthode. Les meilleures productions de propolis ont été obtenues avec les méthodes I et III pendant la période la plus
chaude ou récolte I soit 35,2 g/ruche et 36,7 g/ruche respectivement. Les quantités les plus faibles soit 3,3 g/ruche ont été
enregistrées pendant la période III en utilisant les méthodes I et III. Mais pendant la période II, c’est la méthode II qui a
permis d’extraire le plus de propolis (20,0 g). Pour en savoir plus, il conviendrait de comparer aussi ces méthodes entre avril
et juillet.
2021-01-01T00:00:00ZFormulation of goat’s milk yogurt with fig powder: Aromatic profile, physicochemical and microbiological characteristicsSouhila, Mahmoudihttp://dspace.univ-msila.dz:8080//xmlui/handle/123456789/243822021-06-14T08:40:25Z2020-08-01T00:00:00ZFormulation of goat’s milk yogurt with fig powder: Aromatic profile, physicochemical and microbiological characteristics
Souhila, Mahmoudi
Fig (Ficus carica L.) is an excellent source of sugars, dietary fibers, minerals, vitamins, organic acids and
phytochemicals. The aim of the present work was to investigate the effect of fig powder supplement, as a
natural sweetener and flavoring agent, on the physicochemical, microbiological and sensory characteristics of
goat’s milk yogurt. It aimed also to determine antioxidant capacity and volatile profile using gas chromatography/
mass spectrometry (GC/MS) analysis. Pyrolysis-GC/MS (Py-GC/MS) was also used for the characterization
of fig powder. Fig powder exhibited an important antioxidant activity against DPPH. Radical
(IC50¼1.92 0.05mgper mL). Volatile compounds, from several classes (acids, alcohols, aldehydes,
esters, triterpenoids and others) were identified in fig powder. Py-GC/MS data revealed that degradation of
fig powder macromolecules leaded to the formation of several aromatic and volatile compounds such as fatty
acids, ketones, aromatic phenols, lactones among others. The addition of fig powder increased significantly
(p<0.05) the titrable acidity, the total solids, the carbohydrate content, and the total lactic acid bacteria count
of yogurts. Likewise, fig powder supplement improved yogurt taste, texture and aroma and covered the
unpleasant flavor of goat’s milk. Thus, fig powder is a natural sweetener and flavoring agent that can be
used to formulate a new stirred goat’s yogurt of good quality.
2020-08-01T00:00:00ZIndirect Selection of Tolerant Barley (Hordeum vulgare L.) Genotypes under Semi Arid Conditions Based on the Numerical Images Analysis IndicesAli GuendouzRamdane BenniouHocine BendadaNasreddine Louahdihttp://dspace.univ-msila.dz:8080//xmlui/handle/123456789/242462021-04-22T09:57:41Z2021-01-01T00:00:00ZIndirect Selection of Tolerant Barley (Hordeum vulgare L.) Genotypes under Semi Arid Conditions Based on the Numerical Images Analysis Indices
Ali Guendouz; Ramdane Benniou; Hocine Bendada; Nasreddine Louahdi
Image analysis systems have been increasingly utilized for the assessment of plant growth and health for decades. We used in this
study the software Mesurim Pro to evaluate the variation of the leaf reflectance at Red, Green and Blue and the variation of the
senescence parameters. The analysis of variance revealed that the reflectance at different wavelengths (Red, Blue and Green) was
highly significant genotypes effects (P < 0.001); for this parameter the good genotypes are those we have the lowest values such as
G19. In addition, the preferable genotypes were those which have low values for the mean senescence and senescence velocity;
based on this raison the best genotype was the introduce genotype G12. The genotypes effect was significant for the grain yield and
thousand-kernel weight, for the chlorophyll content and the analysis of variance showed a significant effect of genotypes, the highest
values registered by the introduced genotype G5 this one was in the same homogenize group of G2, G4, G8 and G18. The ranking
of genotypes based on all parameters suggested that the genotypes G11, G12, G5, G15 and G18, respectively (introduce genotypes)
were the ideal genotypes under these conditions
2021-01-01T00:00:00Z