Gas-exchange parameters and morphological features of festulolium (Festulolium braunii K. Richert A. Camus) in response to nitrogen dosage

Abstract

The response of some photosynthetic parameters (CO 2 assimilation, transpiration rate, stomatal conductance, intercellular CO 2 concentration, water-use efficiency, and chlorophyll content), shoot development, and the morphological features of the root system to differentiated conditions of nitrogen supply was tested in festulolium (Festulolium braunii K. Richert A. Camus) varieties (Felopa and Sulino). Nitrogen fertilization with no nitrogen added [0 g(N)], single dosage [0.23 g(N)], and double dosage [0.46 g(N)] per pot and per year was applied. Lack of nitrogen resulted in formation of longer and finer roots and lowered chlorophyll content, CO 2 assimilation, and water-use efficiency, resulting in lower dry matter accumulation. Application of both dosages of nitrogen resulted in improved aboveground features, while root features were enhanced without nitrogen fertilization. Dependence between physiological parameters and morphological traits was significant and positively correlated in the case of the aboveground parts of plants and negatively correlated to the belowground parts.

Effects of Nitrogen Management on Biomass Production and Dry Matter Distribution of Processing Tomato Cropped in Southern Italy

“…Our results showed the highest values of crop water productivity and fruit water productivity in the N-200 and N-250 fertilized plants, confirming the important relationship between soil water content and N fertilization that was also reported in other studies [62,63]. In addition, similar results were reported by Mastalerczuk et al [64] on festulolium, confirming that lack of nitrogen results in lower values of water use efficiency.…”

Integrated omics data of two annual ryegrass (Lolium multiflorum L.) genotypes reveals core metabolic processes under drought stress

“…1 ). Research conducted by Mastalerczuk et al [ 31 ] and Borawska-Jarmujłowicz et al [ 32 ] on perennial ryegrass showed that significant reductions in chlorophyll contents were observed after subjecting seedlings to abiotic stresses. These findings are consistent with those of the present study.…”

Special issue in honour of Prof. Reto J. Strasser - JIP-test as a tool for early detection of the macronutrients deficiency in Miscanthus plants

“…The availability of suitable nutrients for the current growth phase and conditions of cultivation during plant vegetation are crucial for the normal physiological state of the plant as a whole, especially for the photosynthesis (Kalaji et al 2014, Mastalerczuk et al 2017. In this work, we investigated in vivo on three occasions the Chl a fluorescence transients at three leaf ages to analyze the changes in light-dependent phase of photosynthesis in nutrient-deficient Miscathus × gigantheus Anderss.…”