"Asphodelus cerasiferus" J. Gay y "A. Villarsii" Verlot (asphodelaceae): caracterización y tipificación

Asphodelus cerasiferus J. Gay y A. villarsii Verlot (Asphodelaceae): Caracterización y tipificación. Se tipifican y caracterizan morfológica, ecológica y corológicamente Asphodelus cerasiferus J. Gay y A. villarsii Verlot, como una primera contribución al reconocimiento de estas dos especies de la Sect. Asphodelus

Chromosome numbers of plants collected during Iter Mediterraneum V in Morocco

The OPTIMA expeditions (Itinera Mediterranea) constitute a good opportunity for improving the karyological knowledge of taxa distributed in geographical areas little known in the Mediterranean region. The chromosome number of many gatherings collected during different expeditions was counted and published in several papers (Luque & Díaz Lifante 1991; Díaz Lifante & al. 1992; Vogt & Aparicio 1999; Vogt & Oberprieler 2012). During the fifth OPTIMA expedition in Morocco in June 1992 (Iter Mediterraneum V), 2366 gatherings were collected, belonging to 1418 taxa. Seeds from 143 gatherings were germinated and chromosome number counted. These specimens belong to 111 different taxa, 79 genera and 25 familie

Nutlet production and germination in female and hermaphrodite plants of Thymus albicans Hoffmanns. & Link (Lamiaceae)

Some reproductive aspects are studied in Thymus albicans Hoffmanns. & Link, endemie to SW Iberian Peninsula. Pereentage of herrnaphrodite plants fruit set, nutlet production, seed set, reproductive effieiency and percentage of gerrnination of seeds produced by female and hermaphrodite plants are studied. Percentage of female and herrnaphrodite plants is very variable between populations. Nutlet produetion and reproduetive efficiency are higher in female than in herrnaphrodite plants, and this, together with a slightly advaneed gerrnination of seed produced by females, may inerease female fitness in natural populations

Channel waveguides and Mach-Zehnder structures on RbTiOPO₄ by Cs⁺ ion exchange

Cs+ ion exchange in RbTiOPO4 and (Yb,Nb):RTP/RTP(001) has been used to locally increase the refractive indices for waveguide circuit fabrication. Ti masks were fabricated on RTP samples by conventional photolithography. Cs+ exchange was done using a CsNO3 melt at 698 K during 2 h. Elemental analysis confirms an Cs+ profile with a variable depth. Apparently the Cs+ exchange is disfavored in the doped epitaxial sample. The refractive index variation is higher for nz than for nx,y. Near-field images of the guided modes at 633, 1064 and 1520 nm were recorded. The optical characterization shows propagation losses of 5 dB/cm at 1520 nm

Polyploidy Expands the Range of Centaurium (Gentianaceae)

The Mediterranean region is one of the most important worldwide hotspots in terms of number of species and endemism, and multiple hypotheses have been proposed to explain how diversification occurred in this area. The contribution of different traits to the diversification process has been evaluated in different groups of plants. In the case of Centaurium (Gentianaceae), a genus with a center of diversity placed in the Mediterranean region, polyploidy seems to have been an important driver of diversification as more than half of species are polyploids

Isolation and Characterization of Microsatellites Markers in Centaurium Grandiflorum ssp. Boissieri

Background: Estimating outcrossing/selfing rates and characterizing genetic diversity with microsatellite markers are crucial to understanding the evolution of plant mating systems. Methods and results: We developed, optimized and characterized eight new primer pairs for Centaurium grandiflorum ssp. boissieri and transferred them to three subspecies of Centaurium quadrifolium. Two SSR loci were transferred from Sabatia campestris to the four Centaurium taxa. Polymorphisms, He, Ho and H–W deviations were estimated in two populations of C. grandiflorum ssp. boissieri and in seven individuals each of C. quadrifolium ssp. barrelieri, C. quadrifolium ssp. parviflorum and C. quadrifolium ssp. quadrifolium. A total of 80 individuals was used in these experiments. The number of polymorphic loci varied among species from one to ten. A total of 127 alleles was scored. The average number of alleles per locus was 12.7. He was higher than Ho in all sampled populations. Hardy–Weinberg equilibrium was found for some loci in different species. Conclusions: This is the first report of microsatellites successfully amplified in the whole Centaurium genus. They will be valuable for estimating mating system parameters and genetic diversity and exploring their relationships with the wide variation in flower morphology in the genus, especially anther-stigma separation.Consejo Nacional de Ciencia y Tecnología #252042Ministerio de Economia, Industria y Competitividad CGL2013-45037-PMinisterio de Ciencia e Innovación PGC2018-099608-B-10

Fabrication of optical waveguides in RbTiOPO4 single crystals by using different techniques

M.A. Butt, M.C. Pujol, R. Solé, A. Ródenas, G. Lifante, M. Aguiló, F. Díaz, S. N. Khonina, R. V. Skidanov and Payal Verma, "Fabrication of optical waveguides in RbTiOPO4 single crystals by using different techniques", XIII International Scientific and Technical Conference on Optical Technologies in Telecommunications,SPIE 9807 (26 March, 2016): doi: 10.1117/12.2231368. One print or electronic copy may be made for personal use only. Systematic reproduction and distribution, duplication of any material in this paper for a fee or for commercial purposes, or modification of the content of the paper are prohibitedProceedings of XIII International Scientific and Technical Conference on Optical Technologies in Telecommunications Conference (Ufa, Russian Federation)In this work, we have demonstrated the use of different technologies to fabricate straight channel waveguides, S-bend waveguides, Y-splitter and Mach -Zehnder (MZ) structures on RbTiOPO 4 crystals and its isomorphs. We used reactive ion etching (RIE), inductively coupled plasma-RIE (ICP-RIE), femtosecond pulse laser micro-fabrication and ion diffusion techniques to structure these crystals. Computer simulations have been carried out and compared with the optical characterization of the waveguides which are in agreement with each other.This work is supported by the Ministry of Education and Science of the Russian Federation, Russian Science Foundation (grant No. 14-19-00114), Spanish Government under Projects MAT2011-29255-C02-02, TEC2014-55948-R, MAT2013-47395, C4-4-R/1-R and by the Catalan Authority under Project 2014SGR135