Vol. 12, Issue 9 (2023)

This study focused on image-based analysis towards understanding root plasticity under drought and salt stress in rice. Plant high resolution imaging and visualization (PHIV-Root Cell) tool was used in this investigation to quantify root anatomical parameters from the cross section (s) of 14 indica rice genotypes which included land races and elite rice cultivars. Quantitative data on root anatomical parameters viz., total root area, exodermis area, cortex area, stellar area and stele lignification showed significant variations between the genotypes. Rice landraces notably Cheriviruppu and Kallimadayan showing larger root area, stelar and cortical area, are expected to have an increased water and nutrient absorption capacity paving the way for drought tolerance. On the other hand, smaller root area and lignified stele might be associated with salt tolerance in genotypes like Pokkali, Mundan, CSR27 and TRY3.