The aim of this study was to evaluate the effect of combination of light-emitting diodes (LEDs) and high-pressure sodium (HPS) lighting on the growth of lettuce variety ‘Multigreen 3’ in a greenhouse. Supplemental blue light had an impact on the efficiency of photosynthetic performance in lettuce; however, different blue light wavelengths had uneven effect. The 470 nm light also had a positive ...

Pea is a grain legume crop commonly grown in semi-arid temperate regions. susceptible to heat stress that affects development and reduces yield. Leaf pigments surface wax canopy make the primary interaction with environment can impact plant response environmental stress. Vegetation indices be used indirectly assess performance regard pigment, biomass, water content indicate overall Our objectiv...

The objective of the study carried out at Botanical Garden Southern Federal University (Rostov-on-Don, Russia) was to assess seasonal changes in photosynthetic pigments contents leaves maples Acer campestre L., A. negundo and saccharinum L. Leaves samples were collected from selected maple trees once a week. chlorophylls carotenoids determined spectrophotometrically expressed per leaf area (mg/...

PREMISE OF THE STUDY Aspen groves along the Niobrara River in Nebraska have long been a biogeographic curiosity due to morphological differences from nearby remnant Populus tremuloides populations. Pleistocene hybridization between P. tremuloides and P. grandidentata has been proposed, but the nearest P. grandidentata populations are currently several hundred kilometers east. We tested the hybr...

The principal pigments present in black tea, theaflavins (TF), have been indicated to be of potential clinical significance in various fields of research which has been hampered by the very low levels of TFs from black tea extractions, being the original method employed to acquire TFs. Forelle pear (44μM TF/g dry weight/h) and Yacon leaf (65μM TF/g dry weight/h) homogenates were tested for thei...

Thalassia testudinum (turtle grass) is the dominant and climax-successional seagrass species in the subtropical/tropical Atlantic and Caribbean region. Two die-offs of T. testudinum in Florida Bay, United States have raised concerns regarding the resilience of this species to environmental disturbances. Seedlings are important in recovery of T. testudinum, following disturbance events. Leaf spe...

The effects of high Zn concentration were investigated in sugar beet (Beta vulgaris L.) plants grown in a controlled environment in hydroponics. High concentrations of Zn sulphate in the nutrient solution (50, 100 and 300 microm) decreased root and shoot fresh and dry mass, and increased root/shoot ratios, when compared to control conditions (1.2 microm Zn). Plants grown with excess Zn had inwa...

To explore the traits contributing to invasiveness of Eupatorium adenophorum and to test the relationship between plasticity of these traits and invasiveness, we compared E. adenophorum with its two native congeners at four irradiances (10%, 23%, 40%, and 100%). The invader showed constantly higher performance (relative growth rate and total biomass) across irradiances than its native congeners...

The measurement of leaf pigments using non-destructive methods can be influenced by water management conditions and the use nutrients in cauliflower, not showing adequate correlations with chlorophyll contents. objective this study was to evaluate correlation between SPAD index pigment content cauliflower leaves managed different application silicon (Si). cultivation carried out a protected env...