Two trials were conducted under Mediterranean conditions to monitor several physiological indicators before harvest (leaf chlorophyll concentration, quantum yield of photosystem II electron transport, stem water potential, and stomatal conductance) some agronomic performance parameters at (vigor, fruit growth, size, weight, yield), ‘Vairo’ almond ‘Big Top’ nectarine cultivars grafted onto eight...

Due to climate change, multiple heat events are expected be an additional limiting factor that will adversely affect wheat production. The study aimed analyze the physiological response stress in four winter cultivars at different stages under greenhouse conditions during 2019. net photosynthetic rate, stomatal conductance, chlorophyll index, maximum quantum efficiency of photosystem II, fructo...

The effect of linolenic acid on photosynthetic electron transport reactions in chloroplasts has been localized at a site on the donor side of photosystem I and at two functionally distinct sites in photosystem II.In photosystem I, an increase in the electron transport rate occurs in the presence of 10 to 100 micromolar linolenic acid, followed by a decline in rate from 100 to 200 micromolar lin...

the changes of chl a fluorescence induction curve in response to different salinity levels in canola (barassica napus, l.) plants were investigated. the canola seedlings were exposed to salt stress (100 mm and 200 mm nacl) for 7 days and chl a fluorescence induction kinetics was analysed. by using the ojip-test, various parameters like vj, area, n, φpo, φeo, ψo, rc/abs and piabs were calculated...

We have combined individual-cell "pump-during-probe" (PDP) measurements of chlorophyll (Chl) fluorescence induction on the time scale of 30 to 100 microseconds [1, 2] with flow cytometric (FC) characterization of each cell, to obtain population-specific photosynthetic characteristics. The results provide information about the potential quantum yield of photochemistry (I ), the fraction of funct...

Abstract Microplastics (particles of plastics <5 mm) affect the physical, biological and hydrological properties agricultural soil, as well crop growth. We investigated effect addition three microplastics (high-density polyethylene (HDPE), polyvinyl chloride (PVC), polystyrene (PS)) at a concentration 5% (w/w) to silty loam soil on selected growth radish ( Raphanus sativus L. var. sativus). ...

In photosynthesis, the energy of the Sun is absorbed by the light-harvesting antenna and transferred to the reaction center (RC) within several tens of picoseconds. In the RC the solar energy is converted into electrochemical energy by means of a trans-membrane charge separation. Photosynthetic purple bacteria employ a single reaction center. In contrast, in photosynthesis of plants, algae and ...

Light utilization is the vital first step of photosynthesis for photoautotrophic organisms. Boosting growth and yield photosynthetic organisms critical in sustainable food biofuel production a photobioreactor. In this contribution, we improved light quality cyanobacteria by addition aggregation-induced emission luminogens (AIEgens), which could absorb ultraviolet/blue emit green/yellow into cul...