The present study demonstrates an efficient protocol for in vitro mass propagation of A. curassavica through direct as well as indirect regeneration. The effect of MS and L2 media supplemented with various concentrations and combinations of growth regulators has been studied. The growth regulators used include BAP and kinetin (cytokinins) and IAA, IBA, NAA and 2, 4-D (auxins). MS media proved b...

The SE7 somaclonal line of finger millet (Eleusine coracana) achieved increased grain yield in field trials that apparently resulted from a higher number of inflorescences and seeds per plant, compared with the wild type. Levels of endogenous cytokinins, especially those of highly physiologically active iso-pentenyl adenine, were increased during early inflorescence development in SE7 plants. T...

The extent of growth stimulation of C3 plants by elevated CO2 is modulated by environmental factors. Under optimized environmental conditions (high light, continuous water and nutrient supply, and others), we analysed the effect of an elevated CO2 atmosphere (700 ppm, EC) and the importance of root-bed size on the growth of tobacco. Biomass production was consistently higher under EC. However, ...

High salinity results in a decrease plant photosynthesis and crop productivity. The aim of the present study was to evaluate effect UV-C priming treatments lettuce seeds on plants grown at high salinity. Non-primed primed were an hydroponic system, with standard nutrient solution, either supplemented 100 mM NaCl (high salinity), or not (control). Considering that leaf root K + concentrations re...

Cytokinin activity was found in mature black olive fruits while in green fruits the activity was markedly lower. The substances with cytokinin activity showed chromatographic properties similar to those of nucleotides. Acid hydrolysis caused a shift of the active zone in the organic phase of 1-butanol-acetic acid-water (4:1:5) from R(F) 0.1 to R(F) 0.8. The possible relation of these endogenous...

A new study demonstrates that storage organ formation can be induced in the axillary meristem of non-tuberizing plants by ectopic expression of the cytokinin biosynthetic gene LONELY GUY (LOG1).

Stem and leaf tissues of carnation (Dianthus caryophyllus) plants appear to contain a natural antisenescence factor since removal of most of these tissues from cut carnation flowers hastened their senescence. However, kinetin (5-10 mug/ml) significantly delayed senescence of flowers with stem and leaf tissues removed. In addition, the life span of cut flowers with intact (30-cm) stems was incre...

Abstract It has been suggested that the response of specialty cut flower Limonium sinuatum to different abiotic stress situations related plug tray cell size during nursery could be associated with synthesis and translocation endogenous cytokinins produced in root tips. To validate this hypothesis, aim work was evaluate participation process biomass accumulation L. plants through foliar sprayin...

Plants which naturally occur on nutrient-poor sites have inherently lower growth rates when compared to plants from more favourable habitats. This difference in growth rate is maintained when the species are compared under conditions which are optimal for their growth. Genetic variation in plant growth rate is predominantly due to variation in the pattern of biomass allocation in leaves, stems ...