Evaluation of salt tolerance in sugarcane mutant clone M4through the application of a rhizobacterial consortium
¹University of Jember, Faculty of Agriculture, Graduate School of Agronomy,
Jl. Kalimantan 37, 68121, Indonesia
²University of Jember, Faculty of Agriculture, Department of Agrotechnology,
Jl. Kalimantan 37, 68121, Indonesia
³Kyungpook National University, College of Agriculture and Life Sciences, School of Applied BioSciences, Korea Science and Technology, Daegu, South Korea
*Correspondence: moh.ubaidillah.pasca@unej.ac.id; kkm@knu.ac.id
Abstract:
Sugarcane is one of the most important commodities in the world, with average global production reaching 1.9 billion tonnes in 2022. However, the availability of productive land does not meet the high production demand. This encourages farmers to utilize suboptimal land to meet global sugar cane needs. The aim of this study was to utilise a rhizobacterial consortium to identify the sugarcane mutant clone M4‘s salt tolerance, which was compared to the widely used Bululawang variety. The experiment was conducted using a hydroponic system with salt treatment (150 mM NaCl) and varying concentrations of the rhizobacterial consortium (2, 4, and 6 mL). Morphological and physiological parameters were measured to assess the response to salt stress. The findings showed that the M4 clone significantly improved plant height, root length, and total chlorophyll content compared to Bululawang. The application of the rhizobacterial consortium significantly enhanced salt tolerance in both genotypes, with the M4 clone showing a stronger response. Overall, the M4 clone displayed greater potential for cultivation in high-salinity soils, particularly when supported by the application of a rhizobacterial consortium. These findings provide valuable insights for the development of sugarcane varieties with enhanced tolerance to abiotic stress, potentially improving agricultural productivity in suboptimal lands.
Key words:
abiotic stress, bululawang variety, rhizobacterium, salt stress, sugarcane