On the territory of our country, in foreign Europe, North America, some regions there are outcrops calcareous rocks. The high endemism and same rare plant species concentration characteristic features such landscapes. results elemental composition primary assessment aboveground underground organs three from biotopes Samara region given. Three were chosen for studies: obligate calcephite Gypsoph...

A suspension culture of soybean (Glycine max L.) was grown on a defined medium in which the nitrogen sources were nitrate (25 mM) and ammonium (2 mM). The cells did not grow on nitrate unless the medium was supplemented with ammonium or glutamine. The l- and d-isomers of 12 amino acids tested singly could not replace ammonium. Most amino acids (4 mM) inhibited growth when the cells were culture...

Chlidoplitis and Megahoplitis are closely related Palaearctic subgenera of the osmiine bee genus Hoplitis (Megachilidae) containing nine and two species, respectively. Analysis of female pollen loads and field observations suggest that all species are pollen specialists. Whereas the H. (Chlidoplitis) species are probably all narrowly oligolectic and exclusively collect pollen on Allium (Alliace...

A NEW SPECIES AND NEW RECORD OF GRACILLARIID MOTHS FROM CHINA ARE REPORTED: Conopomorpha flueggella Li, sp. n. and Epicephala relictella Kuznetzov, 1979. Specimens were collected on flowers or leaves of Flueggea suffruticosa (Pall.) Baill. (Euphorbiaceae) at night, and reared from fruits in captivity. Larvae of both species feed on the seeds of Flueggea suffruticosa, but they can be differentia...

This study focuses on albedo mapping over agricultural surfaces using multidirectional and multispectral remote sensing data. These data were acquired using the airborne PolDER sensor during the Remote Sensing Data Assimilation (ReSeDA) experiment. The data set allowed to perform a validation over the growth cycles of several crops. Problems induced by mixed pixels were reduced since the ground...

Mikolaj Cieslak, Michel Génard, Frédéric Boudon, Valentina Baldazzi, Christophe Godin, and Nadia Bertin Department of Computer Science, University of Calgary, INRA, UR 1115 Plantes Systèmes de Culture Horticoles, INRIA project-team Virtual Plants, with CIRAD and INRA, UMR AGAP ^The presented work was done as part of a postdoctoral fellowship with INRA and INRIA *correspondence: msciesla@ucalgar...

'Candidatus Liberibacter asiaticus' (Las) is the primary causal agent of huanglongbing (HLB), the most devastating disease of citrus worldwide. There are three known insect vectors of the HLB-associated bacteria, and all are members of the Hemiptera: Diaphorina citri (Psyllidae), Trioza erytreae (Triozidae), and Cacopsylla (Psylla) citrisuga (Psyllidae). In this study, we found that another hem...

This paper gives a genera l ized overview of RESEDA, an i n t e r a c t i v e quest ion answering system designed p r i m a r i l y f o r use by h i s t o r i a n s . I t s data base cons is ts o f h i s t o r i c a l i n f o rma t i on , which a t temps to descr ibe the a t t i t u d e s , p o l i t i c a l , r e l i gious and i n t e r p e r s o n a l , of the ch ie f characters of the pe r i...