2021 : Biomass allocation of rice (Oryza sativa) with varying soil salinity related to growth stages

Mukhammad Muryono S.Si., M.Si., Ph.D



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oil salinity is a major abiotic stress, reducing crop yields and endangering global food security. Indonesia has 0.4 million hectares of land which is either affected by dryland salinity or is at high risk of being affected. To increase understanding of the influence of soil salinity on biomass allocation related to the growth stage of rice (Oryza sativa L.), four rice genotypes were exposed to high and low soil salinity at a field scale. The treatments were applied on 20 days old seedlings and maintained until booting stages and panicle initiation. In this result, we showed salinity significantly reduced plant height, number of tillers, number of leaves, and whole plant mass, both in the booting stages and panicle initiation. Under low and high salinity soil, the root biomass was higher in the booting stage than panicle initiation. Moreover, at panicle initiation stem biomass are higher. In addition, our study indicated that biomass allocation in the growth stage in low and high salinity soil can promote salt tolerance genotype