Polymorphism at High Molecular Weight Glutenin Subunits and Morphological Diversity of Aegilops geniculata Roth Collected in Algeria

A collection of 35 accessions of the tetraploid wild wheat Aegilops geniculata Roth (MM, UU) sampled in northern Algeria was evaluated for morphological and biochemical variability. Morphological and ecological analyses based on morphological traits and bioclimatic parameters, respectively, were assessed using principal component analysis (PCA). Accessions were differentiated by width characters, namely spike’s width, and a weak relationship between morphological traits and ecological parameters was found. Polymorphism of high molecular weight (HMW) glutenin subunits was carried on by sodium dodecyl sulphate-polyacrylamide gel electrophoresis (SDS-PAGE). Among accessions analyzed, 27 alleles were identified at the two loci Glu-M1 and Glu-U1: resulting in twenty-nine patterns and a nomenclature was proposed. Two alleles at the Glu-U1 locus expressed a new subunit with a slightly slower mobility than subunit 8. These results provide new information regarding the genetic variability of HMW glutenin subunits, as well as their usefulness in cultivated wheat quality improvement

Briófitas da Serra de Itabaiana, Sergipe, Brasil The bryophytes from the Serra de Itabaiana, Sergipe, Brazil

Na Serra de Itabaiana, foram encontradas 15 espécies de musgos pertencentes a 14 gêneros de 11 famílias e 14 de hepáticas de oito gêneros de quatro famílias. Rectolejeunea pililoba (Spruce) Schust. está sendo referida pela primeira vez para o Brasil. Destas espécies, 26 estão sendo referidas pela primeira vez para o estado.<br>Fifteen species of mosses and fourteen species of liverworts are reported from Serra de Itabaiana, Sergipe, Brazil. The mosses are distributed among 14 genera and 11 families, and the liverworts for eight genera and four families. Rectolejeunea pililoba (Spruce) Schust. is cited for the first time from Brazil. Altogether, 26 species are cited for the first time for the State