Biometric responses of sorghum and mung bean plants exposed to isolated and combined salinity and aluminum stresses
DOI:
https://doi.org/10.33448/rsd-v12i5.41341Keywords:
Stress; Plants; Salinity; Aluminum.Abstract
Abiotic stresses induce changes in growth and loss of productivity in plant species. The present study aimed to evaluate the responses of mung bean and sorghum plants subjected to salt stress (0, 50 and 150 mM of NaCl) and aluminum (0 and 1.0 µM of Al) alone or in combination with base in the measurement of absolute growth rate, plant height, fresh mass of shoots and roots and root length. It was observed that the sorghum plants showed higher values of absolute growth rate and plant height in relation to mung bean, with the other parameters being similar between the two cultures. Salinity and aluminum stress induced negative effects when applied alone or combined in all variables analyzed for the two cultures tested. The combination of 150 mM NaCl and 1.0 µM Al did not affect the plant height, fresh mass and length of roots of sorghum plants compared to that observed in plants stressed with only 150 mM NaCl. Root length of mung bean plants stressed with 1.0 µM Al was statistically similar to that observed in plants simultaneously exposed to 50 mM NaCl and 1.0 µM Al. Sorghum plants showed better responses to saline and aluminum stress than mung bean plants, possibly due to the C4 metabolism present in these plants, which allows greater CO2 uptake and biomass accumulation.
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Copyright (c) 2023 Maria Eduarda Cabral da Silva; Ana Raquel Pereira de Melo; Cleriston Correia da Silva Souza; José Alves Pereira Neto; Vicente Paulo da Costa Neto; Victor Breno Campelo Lima; Aurenivia Bonifacio
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