Vol. 11, Issue 8 (2022)

Author(s):
Jhansi M, Manonmani V, Kavitha S, Karthikeyan S and Gurusamy K

Abstract:
Sulphur requirement for diverse soil types, oilseed crops and the role of microorganisms in making it available to plants are important to understand. The present study was conducted with the aim to evaluate the efficacy of seed priming with sulphur oxidising bacteria for improving seed quality attributes of sesame. The objective of the research is to find the suitable sulphur oxidising bacteria and optimise its concentrations for seed priming in sesame cv. VRI 4. The seed priming agents viz. Azophos (Azospirillum + Phosphobacteria) and two different Sulphur Oxidising Bacteria namely Dyella thiooxydans ATSB10 and Achromobacter xylooxidans ON9503241 were utilised for improving germination and vigour along with hydropriming and nonprimed seeds used as control. The seeds primed with sulphur oxidising bacteria shown 10 and 8 per cent increase in germination over non-primed seeds and hydroprimed seeds, respectively. Similar increase in other seed quality attributes viz., speed of germination, germination, root and shoot length, dry matter production and vigour index were observed. The sulphur oxidising bacteria Achromobacter xylooxidans @ 6% for 8 hours of priming improved all the seed quality attributes in sesame VRI 4.