Effect of Bradyrhizobium sp. strains in soybean mutants nodulation

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María Caridad Nápoles García
Belkis Morales Mena
Ionel Hernández Forte
Rodolfo Guillama Alonso
María Caridad González Cepero

Abstract

Soybean is a crop of great importance due to its nutritional value for both human and animals, in addition to its use in multiple economic lines. It is essential to expand its production in Cuba, for which work is being done on the selection of productive varieties adapted to the country's soil and climate conditions. As a legume, soybeans associate in a symbiotic interaction with bacteria of the rhizobia family, forming nodules on their roots that allow the nitrogen biological fixation and that way supply it to the plant. Among the most studied and validated inoculants in the international market are those based on Bradyrhizobium, and their starting point is the strains selection for their competitiveness and efficiency in the formation of active nodules. The objective of this work was: to select Bradyrhizobium strains based on their ability to form nodules in Cuban soybean cultivars. Five strains of Bradyrhizobium, from the INCA bacteria collection, were used. They were inoculated on seeds of six soybean cultivars obtained by selection or mutations by gamma rays induction. A bifactorial analysis with the cultivar-strain factors was carried out. The results showed interaction between the factors, also that the resident strains nodulate all the cultivars studied, and that the interaction of B. elkanii ICA 8001 strain with the cultivars Cuvin 22 and Cuvi 99 was highlighted.

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How to Cite
Nápoles García, M. C., Morales Mena, B., Hernández Forte, I., Guillama Alonso, R., & González Cepero, M. C. (2024). Effect of Bradyrhizobium sp. strains in soybean mutants nodulation. Cultivos Tropicales, 45(4), https://cu-id.com/2050/v45n4e01. Retrieved from https://ediciones.inca.edu.cu/index.php/ediciones/article/view/1814
Section
Short Communication

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