Seed germination strongly affects plant population growth and persistence, and it can be dramatically influenced by phylogeny, seed traits, and ecological factors. In this study, we examined the relationships among seed mass, seed shape, and germination percentage (GP), and assessed the extent to which phylogeny, seed traits (seed mass, shape, and color) and ecological factors (ecotype, life fo...

Previous studies on the embryo structure of legumes species had resulted in division Fabaceae family into two great subfamilies based axis curvature. Research seed morphology and anatomy adds to knowledge taxonomy, evolution ecology. This study determined developmental anatomy, pod as well germination characteristics observed variants (T1 - small prickles; T2 medium T3 long prickles) Pterocarpu...

African lovegrass (Eragrostis curvula) is one of the invasive perennial grasses that continues to disturb natural ecosystems globally. Experiments were conducted in southeast Queensland, Australia, evaluate effects temperature, salt stress, water burial depth, and sorghum crop residue load on emergence efficacy postemergence herbicides two populations (Clifton Crows Nest) E. curvula. The optima...

Seeds from 30 species of grasses and forbs native to Pacific Northwest prairies were tested for physical and physiological dormancy. The physical dormancy was determined by mechanically and chemically scarifying seeds. Physiological dormancy was evaluated with cold stratification before germination. Experiments were analyzed individually with ANOVA analysis, and by seed lots through time using ...

the scientific panel on “landscape ecology” was held in nazar research center by presence of professors and experts in “landscape” and “ecology”, in order to discuss the relation of these concepts and definition of “landscape ecology”. in this panel arranged by dr. seyed amir mansouri, director of landscape architecture department at university of tehran and president of nazar research center, ...

Seed dispersers play a key role in the ecology and evolution of fleshyfruited plants; especially in tropical forests where from 70% to 90% of all woody species are dispersed by vertebrates (Fleming et al., 1987; Jordano, 2000). Local plant communities with a range of fruit types are assembled under a variety of selection pressures and historical effects. Analyses of community-level variation in...