The Soil Plant Analysis Development (SPAD) chlorophyll meter is one of the most commonly used diagnostic tools to measure crop nitrogen status. However, the measurement method of the meter could significantly affect the accuracy of the final estimation. Thus, this research was undertaken to develop a new methodology to optimize SPAD meter measurements in rice (Oryza sativa L.). A flatbed color ...

Radiative transfer models have seldom been applied for studying heterogeneous grassland canopies. Here, the potential of radiative transfer modeling to predict LAI and leaf and canopy chlorophyll contents in a heterogeneous Mediterranean grassland is investigated. The widely used PROSAIL model was inverted with canopy spectral reflectance measurements by means of a look-up table (LUT). Canopy s...

YS+mh3g i19S7, * SStemtttre exfA02i0n in sdmtce eflmkx+tcd many peraomaf mbeci4peSmmto joomsss smf dem$!sts witk Sntezdkbtfnarv Imtermte ckmmdled new mexoasfm to ctwrant awarenaa. tie 0S these, Currcnl

Chlorophyll and carotenoid are the main pigments that responsible for coloration of citrus fruit. The changes in their contents related to development stage During fruit maturation, carotenoids massively accumulated flavedo juice sacs, while chlorophyll decreased rapidly. In contrast, increase content decrease observed during regreening process. addition, plant hormones environmental conditions...

The genetic differences in the landraces are very important for plant breeding. aim of this study was to determine chlorophyll, ash and N contents their relations with grain yield Turkish bread wheat landraces. There were significant (GY), content flag leaf at anthesis (AFLAC), spike (ASAC), maturity (MFLAC), (GAC), chlorophyll (ACC), early milk (EMCC), late (LMCC), dough (EDCC), (FLN) (SN). po...

the impacts of salicylic acid and silicon on some physiological parameters of maize seedlings in the presence ofcadmium (100 μm) were investigated. inhibitory effects of cadmium on seedling growth resulted in reduced shoot and root fresh weight, low percentage of relative water content, low chlorophyll, free proline and soluble sugars contents and a low rate of lipid peroxidation. results indic...

sulfur (s) is an essential macronutrient influencing plant growth, nutrient efficiency, quality and health of agricultural crops. the purpose of this research was to study the effects of s rates and sources on growth and fruit quality of apple (malus domestica l.) trees of ‘golden delicious’ at west azerbaijan, iran. experiment was conducted during four seasons (2003-2007), using a factorial ra...

zagros (drought tolerant) and pishtaz (drought susceptible) cultivars were classified on the basis of shoot dry weight and were used as plant material in this study. total chlorophyll, carotenoids, antocyanins, proline, soluble sugar contents, lipid peroxidation, antioxidant enzyme activities and protein patterns were determined. seedlings of wheat genotypes were grown in nutrient solution cult...

abstract in recent years some research results have appeared that exogenous salicylic acid provided significant mitigation effect against salinity induced injuries in plants. an experiment was conducted to investigate the effects of salt stress and salicylic acid on radish (raphanus sativus l.) plants. after appearing first leaves, plants were treated by salicylic acid (0.2 mm) for 3 days and n...