Ochoa-Fuentes YM¹, E Cerna², J Landeros², O Vazquez¹, V Olalde³, A Flores²

Phyton-International Journal of Experimental Botany, Vol.78, pp. 25-30, 2009, DOI:10.32604/phyton.2009.78.025

Abstract Forty two Mexican isolates of Phytophthora cinnamomi Rands were examined for genetic diversity by the random amplified polymorphic DNA assay. The amount of genetic variation was evaluated by polymerase chain reaction amplification with a set of twenty one random 10-mer primers. All amplifications revealed scorable polymorphisms among the isolates, and a total of 23 band positions were scored for the 21 primers tested. Genetic distances among the isolates were calculated, and cluster analysis was used to generate a dendogram which showed relationships between them. These results suggest that the geographic groups were strong. More >

SONIA ROSENFELDT, BEATRIZ GLORIA GALATI

BIOCELL, Vol.32, No.1, pp. 41-47, 2008, DOI:10.32604/biocell.2008.32.041

Abstract Eleven Oxalis L. species from the province of Buenos Aires (Argentina) were investigated with scanning and transmission electron microscopes. We identified four different types and two subtypes of orbicules. We conclude that the close morphological similarity between these species is also reflected in their orbicules, and we suggest that the orbicules morphology may be a useful character in systematic studies. More >

Pincheira-Ulbrich¹ J, JR Rau², E Hauenstein³

Phyton-International Journal of Experimental Botany, Vol.77, pp. 321-326, 2008, DOI:10.32604/phyton.2008.77.321

Abstract We sampled the diversity of trees and shrubs, and built the rarefaction and accumulation species curve in 10 native forest fragments in southern Chile. Results indicated that: (1) there were 23 species in all sampled fragments, (2) species richness increased significantly with fragment size, (3) all fragments require a minimal sampling from 40 to 170 individuals to reach the maximum theoretical species richness, and (4) sampling richness was greater than that theoretically expected (20 species). More >

LINDSAY G. ROSS¹, CARLOS A. MARTÍNEZ-PALACIOS², MARIA LUISA RODRÍGUEZ DE SOUSA³, ANTONIO CAMPOS-MENDOZA²

BIOCELL, Vol.30, Suppl.S, pp. 119-120, 2006

Abstract This article has no abstract. More >

García-Zambrano² Eduardo A, Adriana Gutiérrez-Díez, Gilberto E Salinas-García, Elizabeth Cárdenas-Cerda, Rigoberto E Vázquez-Alvarado, Francisco Zavala-García, Jesús Martínez de la Cerda

Phyton-International Journal of Experimental Botany, Vol.75, pp. 125-135, 2006, DOI:10.32604/phyton.2006.75.125

Abstract The objective of this investigation was to develop and apply molecular markers (type RAPD) for estimating the genetic diversity of 100 Opuntia accessions from the Germoplasma Bank of the FAUANL. The molecular data were evaluated by multivariate analysis using the methods of Ward and UPGMA. These results were compared with phenotypic data taken from the same accessions, already evaluated by the above mentioned methods. The protocol was modified for the extraction of the Opuntia DNA to reduce the quantity of polysaccharides and their influence in its quality. Later on, a protocol was developed for the generation of More >