Comparative root anatomy of Duchesnea indica, Fragaria vesca and Potentilla tucumanensis (Rosaceae) in the province of Tucumán, Argentina

ALBORNOZ, PATRICIA LILIANA; ARIAS, MARTA EUGENIA; CASTAGNARO, ATILIO PEDRO; DIAZ RICCI, JUAN CARLOS

ADANSONIA

Publicantions Scientifiques du Muséum National d'Histoire Naturelle

Lugar: Paris; Año: 2007 vol. 29 p. 255 - 267

1280-8571

We report themorphological and anatomical characterization of the primary and secondarystructures of root systems in Duchesnea indica (Andrews) Focke, Fragariavesca L. and Potentilla tucumanensis Castagnaro & Arias, threespecies that show a main tap-root with a variable branching pattern. Motherplants of F. vesca present main roots with a primary structure of thediarch type, a secondary structure with a polyderm, and adventitious roots fromdiarch to pentarch stele. Mother plants of D. indica and P. tucumanensisdo not form adventitious roots, the primary structure is a diarch, and thesecondary structure lacks a polyderm. Daughter plants of D. indica and F.vesca form adventitious roots with variable steles, from diarch to polyarch.Tracheids were only observed in F. vesca and P. tucumanensis. Ourresults show that the number of protoxylem poles, and the occurrence oftracheids and polyderm constitute valuable diagnostic characters for theidentification of these species.