Pastos y Forrajes
versão ISSN 0864-0394
BECQUER, C.J et al. Inoculation of wheat (Triticum aestivum, L.) with rhizobia adapted to livestock ecosystems of Alberta, Canadá. Pastos y Forrajes [online]. 2007, vol.30, n.1, pp. 1-1. ISSN 0864-0394.
A greenhouse experiment was carried out in order to select rhizobium strains inoculated on wheat (Triticum aestivum, L., var. CDC Teal). For that 16 Canadian native strains, belonging to Sinorhizobium medicae, as well as 12 commercial strains, were used. The inocula were prepared in YMB medium and shaken up to obtain a title of 106-108 cells/mL. The standard methods for the inoculation of cereals were used. A dendrogram was constructed by means of the Ward's method (square Euclidian distance). The variables: aerial dry weight (ADW), dry weight of root (DWR), stem length (SL), dry weight of spikes (DWS) and number of shoots (NS) were evaluated. A significant increase was observed in all the variables in the treatments inoculated with the native strains and the commercial strains of rhizobium, as compared to the absolute control. In aerial dry weight, dry weight of spikes and dry weight of root, most of the treatments did not differ significantly from the fertilized control. In stem length there were 17 treatments statistically higher than the fertilized control. Ten strains were selected from the total. The treatments selected in the dendrogram constituted 31% for the native strains and 42% for the commercial strains. Field trials with the strains selected inoculated on cereals of economic interest for Cuba are recommended.
Palavras-chave : Inoculation; Rhizobium; Triticum aestivum.