Leaf color in some individuals of Cistus creticus turns transiently to red during winter, while neighboring individuals occupying the same site remain green. We have examined whether anthocyanin accumulation can be associated with variations in photosynthetic and/or photoprotective characteristics between the two phenotypes, rendering the red phenotype more vulnerable to photoinhibition and, ac...

In the framework of study on taxonomy of the genus of Septoria in Iran, we studied herbarium specimen of R. muricatus (IRAN 8006F) collected during 1990 from Golestan province (N Iran). A Septoria species was observed on the specimen with following morphological features: leaf lesions, brown, amphigenous, extended through the entire leaf and equally visible on both sides. Conidiomata amphigeno...

BACKGROUND AND AIMS Apomictic plants maintain functional pollen, and via pollination the genetic factors controlling apomixis can be potentially transferred to congeneric sexual populations. In contrast, the sexual individuals do not fertilize apomictic plants which produce seeds without fertilization of the egg cells. This unidirectional introgressive hybridization is expected finally to repla...

Energy expenditure in man 77 Hoppe-Seyler, F. (1894). Hoppe-Seyl. 2. 19, 574. Jaquet, A. (1903). Verh. nuturf. Ges. Easel, 15, 252. Kofrdnyi, E. & Michaelis, H. P. (1940). Arbeitsphysiologie, 11, 148. Krogh, A. (1906). Skand. Arch. Physiol. 18, 364. Krogh, A. & Lindhard, J. (1920). Bi0chem.J. 14, 290. Lavoisier, A. L. (1775-85). (Euvres de Lavoisier. Vol. 2, Paris: Imprimerie Imperiale, 1865. L...

Water level regulation for purposes of hydropower production has caused notable changes in the littoral zones of regulated lakes in northern Finland. Marked geomorphological changes have taken place in the lakes with a raised water level. Lowering of the ice cover during the winter has also caused rapid changes in the littoral. Changes in the environmental conditions and aquatic macrophyte comm...

The valleys of Restelica and Vraca in Kosovo have not been explored sufficiently due to their geographical position the harshness terrain. plant species Ranunculus degenii has collected Restelica, on way border with North Macedonia or between this road Albanian near Shishtavec, while Verbascum scardicola found valley. These localities are mainly dominated by silicate substrate, although presenc...

Adaptive evolution of phenotypic plasticity requires that plastic genotypes have the highest global fitness. We studied selection by spatial heterogeneity of interspecific competition and flooding, and by temporal heterogeneity of flooding on morphological plasticity of 52 genotypes of the clonal shore plant Ranunculus reptans. Competition reduced clone size, rosette size, leaf length and stolo...