Growth of seedlings of five half-sib families of Erythrina poeppigiana inoculated with a selected strain of Bradyrhizobium

Growth of seedlings of five half-sib families of Erythrina poeppigiana inoculated with a selected strain of Bradyrhizobium

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Seeds of five half-sib families of Erythrina poeppigiana (Walpers) O.F. Cook from Costa Rica (2428, 2429, 2431, 2435 and 2444 of the Lating American Forest Seed Bank, CATIE) were inoculated with a selected strain of Bradyrhizobium (CR751 of the University of Costa Rica) and grown in a greenhouse under N-free conditions. At 45 days after planting, there were significant differences in the number of nodules on seedlings from the different families. At 75 days we found significant differences in the number of nodules and leaves, leaf biomass, root biomass and root/shoot ratio. The average number of nodules varied form 34 (2444) to 79 per seedling (2431). Leaf and root biomass were positively correlated with the number of nodules (Pearson r=0,65 and r=0,69, respectively). We conclude that the interactions between familis of E. poeppigiana and strains of Bradyrhizobium species should be considered if the trees are to be inoculated

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Bibliographic Details
Main Authors: 123043 Sánchez, G.A., 100025 Nygren, P., 108611 Ramírez, C., 131136 Westley, S.B., 106621 Powell, M.H. eds., 15141 Nitrogen Fixing Tree Association, Hawaii (EUA), International Conference on Erythrina in the New and Old Worlds Turrialba (Costa Rica) 19-23 Oct 1992
Format: biblioteca
Published: Hawaii (EUA) 1993
Subjects:BRADYRHIZOBIUM, ERYTHRINA POEPPIGIANA, CRECIMIENTO, PLANTULAS, INOCULACION, SEMILLAS, CATIE, BANCO LATINOAMERICANO DE SEMILLAS FORESTALES, NODULACION, BIOMASA,
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Summary:Seeds of five half-sib families of Erythrina poeppigiana (Walpers) O.F. Cook from Costa Rica (2428, 2429, 2431, 2435 and 2444 of the Lating American Forest Seed Bank, CATIE) were inoculated with a selected strain of Bradyrhizobium (CR751 of the University of Costa Rica) and grown in a greenhouse under N-free conditions. At 45 days after planting, there were significant differences in the number of nodules on seedlings from the different families. At 75 days we found significant differences in the number of nodules and leaves, leaf biomass, root biomass and root/shoot ratio. The average number of nodules varied form 34 (2444) to 79 per seedling (2431). Leaf and root biomass were positively correlated with the number of nodules (Pearson r=0,65 and r=0,69, respectively). We conclude that the interactions between familis of E. poeppigiana and strains of Bradyrhizobium species should be considered if the trees are to be inoculated

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