Photosynthetic performance was monitored during two consecutive summers in four co-occurring evergreen Mediterranean tree species growing on a south-facing rocky slope. In response to midday water stress, the drought-avoiding Pinus halepensisMill. exhibited marked stomatal closure (gs) but no changes stem potential (Ψs), whereas drought-tolerant Quercus cocciferaL., Q. ilexssp. ballota(Desf.) Samp. and Juniperus phoeniceaL. displayed declines gs Ψs. The higher resistance CO2 influx needles...

Summary Quercus coccifera , a slow‐growing, evergreen oak, grows in contrasting environments the Mediterranean Basin. Habitat‐based selection may have promoted divergence between populations with respect to phenotypic plasticity and genetic variability. We tested hypothesis that of Q. originating from rock outcrop, continental garrigue formation an oceanic forest would differ their plastic response light intensity. Plants these were grown acorns common garden at 100% 20% full sunlight. Light...

• Evergreen oaks from the Mediterranean basin exhibit a conservative resource-use strategy based on reduced expression of phenotypic variation (i.e. canalization). We hypothesized that genetic across closely related species is more canalized than response to environmental variation. Seedlings Quercus ilex and Q. coccifera, two important oak belong same subgenus section, were grown in contrasted light nutrient environments following factorial design. Phenotypic was explored total 75 variables...

Strawberries are highly appreciated for their taste, nutritional value and antioxidant compounds, mainly phenolics. Fruit antioxidants derive from achenes flesh, but achene contribution to the total fruit capacity bioaccessibility after intake is still unknown. In this work, content of phenolic flavonoids, anthocyanins (TEAC, FRAP DPPH) flesh were compared in non-digested as well gastric intestinal extracts vitro digestion. Results showed that, despite strawberry represent a small fraction...

Strawberry fruit quality traits can be affected by genotype–environment interactions, determining the final consumer acceptance of fruits. Trait stability under varying environments is necessary to ensure strawberries selected breeding programs. Hence, inter- and intra-annual variation organoleptic functional parameters five strawberry varieties throughout four consecutive cropping seasons was analyzed assess their relative stability. In most varieties, showed higher inter-annual but greater...

Strawberry (Fragaria×ananassa Duch.) production requires the input of large amounts water provided by irrigation during entire cycle. However, availability is shrinking in many important strawberry cropping areas, such as Huelva (in Europe), compromising environmental sustainability and economic viability production. Besides technical approaches, water-saving strategies are necessary for improving productivity use low water-consumptive cultivars with high or allowing deficit (DI) strategies....

Photoinhibition was examined in four co-occurring Mediterranean evergreen tree species during two consecutive winters. In response to low temperatures and saturating light, Juniperus phoenicea L., Pinus halepensis Mill., Quercus coccifera L. Q. ilex ssp. ballota (Desf.) Samp. exhibited marked chronic photoinhibition, indicated by predawn maximal photochemical efficiency of photosystem II (PSII) (Fv/Fm). Low Fv/Fm values were correlated with high concentrations xanthophyll cycle components...

Misshapen fruit represent a significant problem for strawberry ( Fragaria × ananassa Duch.) producers around the world. We investigated effect of cultivar and different cropping practices on productivity plants growing in tunnels at Huelva (Spain) over three years. In first experiment, ‘Camarosa’, ‘Ventana’, ‘Medina’ were planted 10 or 22 Oct. standard (30 25 cm), wide (35 narrow (25 cm) spacings. second ‘Camarosa’ was grown macro- microtunnels with without bees. There no plant density....

BACKGROUND: Huelva (Spain) is the main region for strawberry production in Europe.Most fruit exported fresh consumption to European countries, where consumers demand high quality and appreciate its healthy properties.Strawberry intake a valuable source of antioxidants compounds with important health benefits.The higher antioxidant capacity cultivar, better enhancement human health.OBJECTIVE: The comparative knowledge composition on variation along cropping season, ten cultivars cropped at...

Fruit deformation is a phenomenon commonly observed in commercial strawberry cultivars (Fragaria×ananassa) with negative impact on the economic benefit of crop production. To better understand this physiopathy, we evaluated fruit size and relative amount 'small' (<0.4 mm) 'big' achenes (>0.6 misshapen (MF) well-formed (WF) fruits from 'Camarosa', 'Ventana' 'Medina' growing field. In size-dependent functionality was assessed by analysing germinability differences time to ripening between MF...

Abstract The relationships between aerial organ morpho-anatomy of woody polyploid plants with their functional hydraulics under water stress remain largely understudied. We evaluated growth-associated traits, xylem anatomy, and physiological parameters diploid, triploid, tetraploid genotypes atemoyas (Annona cherimola × Annona squamosa), which belong to the perennial genus (Annonaceae), testing performance long-term soil reduction. contrasting phenotypes vigorous triploids dwarf tetraploids...

Increasing L-ascorbic acid (AsA, vitamin C) content in fruits is a common goal current breeding programs due to its beneficial effect on human health. Attempts increase AsA by genetic engineering have resulted variable success likely AsA's complex regulation. Here, we report the of ectopically expressing tomato D-galacturonate reductase (FaGalUR) gene from strawberry, involved biosynthesis, either under control constitutive 35S or fruit-specific polygalucturonase (PG) promoters. Although...

Environmental factors affecting flower development may limit the yields of fruiting crops worldwide. In temperate regions, chilling temperatures during can compromise fruit production, but their negative effects vary depending on differing susceptibilities each developmental stage. The cultivated strawberry (Fragaria× ananassa Duch.) is widely grown worldwide financial returns are influenced by sudden shifts to occurring cropping cycle. Despite this important limitation, knowledge F.×...

Rosellinia necatrix is the causal agent of avocado white root rot (WRR). Control this soil-borne disease difficult, and use tolerant rootstocks may present an effective method to lessen its impact. To date, no studies on molecular mechanisms regulating plant response towards pathogen have been undertaken. shed light underpinning susceptibility tolerance, analysis gene's in two with a contrasting reaction was assessed. Gene expression profiles against R. were carried out susceptible 'Dusa'...

White root rot (WRR) disease caused by Rosellinia necatrix is one of the most important threats affecting avocado orchards in temperate regions. In this study, we monitored progression WRR at leaf and levels combination nondestructive chlorophyll fluorescence measurements confocal laser-scanning microscopy on genotypes susceptible to R. necatrix. Leaf photochemistry was affected early stages development prior appearance aboveground symptoms, made evident as significant decreases trapping...

The physically based agro-hydrological Soil, Water, Atmosphere and Plant (SWAP) model was applied in Andalucía (southern Spain) to simulate the water balance components an irrigated citrus orchard. Direct measurements of soil status using a frequency domain reflectometry (FDR) probe were used calibrate hydraulic functions PEST, parameter estimation package, for crop coefficient (K c ) estimation. Model calibration evaluation carried out 2008 data from orchard considered representative...

Methyl jasmonate (MeJA) and salicylic acid (SA) are important in mediating plant responses to abiotic biotic stresses. MeJA SA can act as elicitors by triggering defense similar those induced pathogens may even provide long-term protection against them. Thus, exogenous application of could protect susceptible avocado plants white root rot (WRR) disease caused the necrotrophic fungus Rosellinia necatrix, one main diseases affecting orchards. This work evaluates effects or on physiological...