Campanula carpatica Jacq. `Blue Clips' plants were grown in a greenhouse under nine combinations of day and night temperatures created by moving plants every 12 h among three day/ night temperatures (15, 20, and 258C). At each temperature, there were three daily light integrals (DLI; 4.2, 10.8, and 15.8 mol mÿ2 per day, averaged over the experimental period) created with varying supplemental li...

In automatic graph drawing a given graph has to be layed-out in the plane, usually according to a number of topological and aesthetic constraints. Nice drawings for sparse nonplanar graphs can be achieved by determining a maximum planar subgraph and augmenting an embedding of this graph. This approach appears to be of limited value in practice, because the maximum planar subgraph problem is NP-...

Let G be a (p,q) graph. An injective map f : E(G) → {±1,±2,...,±q} is said to be an edge pair sum labeling if the induced vertex function f*: V (G) → Z - {0} defined by f*(v) = ΣP∈Ev f (e) is one-one where Ev denotes the set of edges in G that are incident with a vertex v and f*(V (G)) is either of the form {±k1,±k2,...,±kp/2} or {±k1,±k2,...,±k(p-1)/2} U {±k(p+1)/2} according as p is even or o...

Flower opening and closure are traits of a reproductive syndrome, as it allows pollen removal and/or pollination. Various types of opening can be distinguished such as nocturnal and diurnal and single or repetitive. Opening is generally due to cell expansion. Osmotic solute levels increase by the conversion of polysaccharides (starch or fructan) to monosaccharides, and/or the uptake of sugars f...

R346 Current Biology 26, R343–R354, May 9 odoratus L. Second, he dissects the fl ower cutting the petal and ovary with scalpel and observes it with magnifying glass. Third, he makes sketches and photographs the parts of the dissected fl ower. Fourth, he models its form and structure using 3ds Max (3DCG software). Fifth, he renders separate parts and creates a composition using Adobe Photoshop. ...

A new species is added to the monotypic African genus Djinga. Djinga cheekii Ghogue, Huber & Rutish. (Podostemaceae) is described as a new species from Cameroon (Littoral Province) and its morphological affi nities and conservation status are assessed. Th e main distinguishing characters are: stamens 2 (not 1 as in D. felicis ), fl ower buds inside spathella strongly inclined (not only slightly...

Dalmatian pyrethrum (Tanacetum cinerariifolium /Trevir./ Sch. Bip.) is a perennial herbaceous plant belonging to the Asteraceae family. It is endemic to the East coast of the Adriatic Sea and its natural habitat extends from Italy to northern Albania and up in the mountainous regions of Croatia, Bosnia and Herzegovina and Montenegro. Pyrethrum fl owers yield an important insecticide, the pyreth...