Author(s):

PN Bobade, SB Amarshettiwar, TH Rathod, RB Ghorade, NV Kayande and YM Yadav

Abstract: Thirteen different genotypes of rabi sorghum (Sorghum bicolor var. Moench) were evaluated for moisture stress tolerance at seedling stage using -0 (control), -0.066, -0.10, -0.13 and -0.16 MPa non-ionic water soluble polymer polyethylene glycol of molecular weight 6000 and the data was recorded on various seedling parameters like germination percent, root length, RLSTI, shoot length, SLSTI, seedling dry weight, SDWSTI and seed vigour. The experiment was carried out in two replicates under Complete Randomized Design. Different levels of moisture stress induced by PEG-6000 had significantly affected seed germination. Data indicated that increase in osmotic stress caused a significant decrease in germination percentage in all genotypes under study. Maximum germination was (55%), root length (5.32 cm), shoot length stress tolerant index (41.89 %) and seed vigour (521.4) was observed in genotype CSV-29R and shoot length (4.46 cm), shoot length stress tolerant index (21.55 %) and seedling dry weight (0.033 mg) was highest recorded in Elongvan-19 genotype at highest PEG concentration -0.16 MPa. From the overall results it was concluded that the promising genotypes CSV-29R, Elongvan-19, M 35-1 and Phule Maulee showed comparatively better performance than other genotypes under higher concentration of PEG induced water stress. The Parbhani Moti and CSV-22R genotypes were highly affected in comparison to other genotypes at higher PEG concentration. Hence these better genotypes may categorized as stress tolerant during seedling stage.

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