Chlorophyll is an indispensable constituent of the photosynthetic machinery in green organisms. Bound by apoproteins of photosystems I and II, chlorophyll performs light-harvesting and charge separation. Due to the phototoxic nature of free chlorophyll and its precursors, chlorophyll synthesis is regulated to comply with the availability of nascent chlorophyll-binding apoproteins. Conversely, t...

Chlorophyll protein accumulation in barley (Hordeum vulgare L.) chloroplasts is controlled posttranscriptionally by light-induced formation of chlorophyll a. The abundance of translation initiation complexes associated with psbA, psaA, and rbcL mRNAs was measured using extension and inhibition analysis in plants grown in the dark for 4.5 d and then illuminated for up to 16 h. Light-induced accu...

Abstract Application of cold storage temperatures below optimum induces a high risk and threat chilling injury (CI) in the case sensitive commodities. Sweet pepper belongs to this group vegetables, so our main objective was investigate monitor effect non-optimal (2.5 5 °C) induced stress (chilling injury) on kápia type sweet ( Capsicum annuum L. ) during its postharvest by nondestructive qualit...

The objective of this research was to investigate the variation water quality parameters at different depths Gilgel Gibe I reservoir in Oromia Jimma zone during wet seasons. Five stations within were selected, and determined four (surface, 5 m, 10 15 m). Water analyzed on-site using a HACH, HQ40d portable multi-meter, turbidity measured Wag tech meter laboratory standard method. Comparison amon...

Nitrogen (N) management is critical in optimizing potato yield and quality and reducing environmental pollution. Six N rates from 34 to 270 kg ha , and different timing of N application were used in a 3-year field experiment to contrast SPAD-502 chlorophyll meter and QuickBird satellite imagery data against the conventional petiole sampling technique for assessing canopy N status. Overall treat...