Water stress usually impairs photosynthesis and plant growth. Acacia tortilis subsp. raddiana is well adapted to dry environments. The aim of the present study was determine impact a progressive decrease in soil water content on photosynthetic-related parameters at young seedling stage. Drought-induced responses occurred according two types kinetics. potential, stomatal conductance, transpiration rates were rapidly affected by content, while chlorophyll fluorescence-related concentrations...

This study focuses on Mentha piperita L. cultivated in two regions with distinct bioclimatic levels. The aim is to assess and compare the yield, chemical composition, pharmacological activities of plant these diverse environmental conditions. phytochemical profile L essential oils was established using gas chromatographic analysis. were performed vivo vitro analgesic, anti-inflammatory, antibacterial antioxidant assays. optimal yield oil obtained from region Oued Souf 1.02% that Algiers...

Rape (Brassica napus L. var. Bienvenue) is a 16:3 plant which contains predominantly prokaryotic species of monogalactosyldiacylglycerol i.e. sn-1 C18, sn-2 C16 (C18/C16 MGDG). plants were exposed to restricted water supply for 12 days. Under drought conditions, considerable changes in lipid metabolism observed. Drought stress provoked decline leaf polar lipids, mainly due decrease MGDG content. Determination molecular phosphatidylcholine (PC) and indicated that the (C18/C16) decreased after...

BACKGROUND:The synthetic antioxidants are used routinely in foods especially those containing oils and fats to protect them against oxidation.Among the types, most frequently butylated hydroxyl anisole (BHA), toluene (BHT), propyl gallate (PG) tert-butyl hydroquinone (TBHQ).These compounds have been reported be dangerous for human health.Thus search effective, natural with antioxidant activity has intensified recent years replace products. OBJECTIVE:The aim of present study is investigate...

Drought affects a wide part of the world and constitutes one most important limiting factors for growth development vegetation cover. Plants evolved several physiological biochemical mechanisms to cope with biotic abiotic stresses. Gleditsia L. (Fabaceae) is small genus typically spiny trees native America, Asia, Africa. Among this triacanthos belongs drought-tolerant species could be long-term solution reforestation dry land areas. The aim our work study impact water stress on G. plants at...

Chickpea is considered among the most sensitive grain legumes to salinity. The improvement of tolerance lines in combination with tolerant rhizobial strains depends on various environmental and cultural conditions such as soil properties. This investigation was undertaken evaluate effect phosphorus fertilization (0, 90 200 kg ha−1 P2O5) biomass, nodular traits yield (GY) chickpea (cv. Flip 84-79C) growing under salinity (0 150 mM NaCl). trial laid out following a randomized block design...

Abstract Algerian Mentha spicata L. essential oil yield evolution during water distillation has been investigated as a function of time. GC analysis helped to determine the extraction kinetics major components this oil. The results show that there are two kinetic types. We have tried correlate type with location in vegetable material. microscopic observations most is localized exogenous deposits leaves but some endogenous sites stem. Each corresponds considered compound being either or...

L’ Acacia tortilis (Forsskal) Hayne subsp. raddiana (Savi) Brenan [ Savi s. s.] est la légumineuse ligneuse plus répandue dans les régions désertiques d’Algérie. En tant qu’espèce bien adaptée, elle offre un potentiel d’intérêt pour le boisement ou reboisement de ces régions. Sa capacité d’établir une symbiose fixatrice d’azote avec rhizobia constitue caractère important son développement et adaptation aux conditions du milieu. Pour raisons, nous avons mené étude portant sur prévalence chez...

Plants of Parkinsonia aculeata L. were dehydrated by withholding water for 13 days and then rehydrated. The leaves control plants stressed analyzed every four from the beginning stress 6, 24, 48 h after relief. Analysis leaf status showed a decrease in relative content nearly 16% during dehydration return to its value rehydration. contents chlorophylls, chloroplast lipids (monogalactosyldiacylglycerol digalactosyldiacylglycerol), neutral increased 38%, 20%, 125% (in μg·mg dry mass −1 ),...

With rare exceptions, dicot plastids have been reported to contain only a multisubunit (prokaryotic) form of acetyl-coA carboxylase (ACCase), the first committed step lipid biosynthesis. The sensitivity most monocots cyclohexanediones (CHDs) such as sethoxydim, has shown be associated with presence in their multifunctional (eukaryotic) ACCase. Little is known about effects sethoxydim on metabolism and ACCase activity dicots. Here it that foliar biosynthesis differentially affected by...

L’arganier (Argania spinosa (L.) Skeels), essence endemique d’Afrique du Nord, est un arbre resistant a des periodes de secheresse prolongee. L’effet d’un stress hydrique edaphique provoque par une reduction apports d’eau ete etudie sur la partie foliaire plants cultives en pots âges deux mois. Lors modere (68 25 % capacite au champ), teneur relative eau feuilles varie 86 62 %. Les surmontent l’effet contrainte hydrique, grâce fermeture graduelle stomates et mise place mecanisme d’ajustement...

This study aims to highlight the beneficial effect of phosphorus on enhancing growth plant, efficiency use rhizobial symbiosis and ionic partition in chickpea grown under salt stress. Exposure plants stress (0, 150 mM NaCl) caused imbalance, which resulted increased Na+ P reduced K+ contents leaves root. Indeed, stressed showed decrease plant efficiency. The was also affected by salinity. However, addition two different level (37 55 mM) saline soil significantly availability organs....

The greatest failure rate of reforestation programs in Algeria is related to the water deficit especially at young plant stage.Hence, objective this paper study responses drought stress generated by three different regimes 100% (control), 60% (moderate stress) and 40% (severe field capacity (FC) on 3 populations Ceratonia siliqua L. with eco-geographical origins (Zeralda, Tissemsilt Ain Sefra).The germination seeds these were conducted February 2013.The results exhibit a significant decrease...

Abstract Despite the high economic value of safflower ( Carthamus tinctorius ), potential several wild related species as genetic resources is still poorly studied, in particular with regards to drought tolerance, a priority improvement. This situation partially explained by numerous and discussed uncertainties phylogenetic relationships within complex. In this study, we focused on two rare Algerian species, strictus chouletteanus . We aimed at: (i) clarifying their taxonomic status,...

The goals of the present study were to obtain a first estimate intraspecific variability carbon isotope discrimination (Δ) in safflower, thistle-like herbaceous plant, and determine statistical relationship between Δ grain yield as well its components collection 45 accessions different origins. Grain aboveground biomass, harvest index, average weight, (measured on bulk leaf organic matter) investigated experimental field conditions. A large was noted for all traits but principal component...

Acacia totrtilis subsp raddiana or more commonly Acacia ; is one of the few leguminous shrub Saharan, which great interest to both ecological and economic.The objective this work study seed raddiana, focusing germination its biochemical composition. Different scarification methods were used lift inhibition integumentary taxon hasten germination. We found that manual has allowed obtaining a rate calculated at 85% latency 24 hours. It proves be best method, followed by pure sulfuric acid...

Acacia totrtilis subsp raddiana or more commonly ; is one of the few leguminous shrub Saharan, which great interest to both ecological and economic.The objective this work study seed raddiana, focusing germination its biochemical composition. Different scarification methods were used lift inhibition integumentary taxon hasten germination. We found that manual has allowed obtaining a rate calculated at 85% latency 24 hours. It proves be best method, followed by pure sulfuric acid (98%)....

Acacia raddiana or tortilis (Forsk) Hyane subsp. (Savi) Bernan, (Fabaceae) is characterized by a great ecological p lasticity. It largely used the local populations as medicinal plants, fodder, wood energ y, coal because it high calorific value. This plant thus plays big role in rural economy becaus e also appreciated craft industry and for clothes, tools kitchen utensil manufacture. The study of intensity osmotic stress effect on germination seeds reveals that there very strong negative...