Effect of Predominant Mycoflora (A. alternata and M. phaseolina) on Seed Quality Parameters of Sesamum

S. Greeshma *

Department of Seed Science and Technology, College of Agriculture, Professor Jayashankar Telangana State Agricultural University (PJTSAU), Rajendranagar, Hyderabad-500 030, Telangana, India.

B. Rajeswari

Department of Plant Pathology, College of Agriculture, Adilabad- 504 001, India.

T. Kiran Babu

Department of Plant Pathology, Rice Research Centre (ARI), Rajendranagar, Hyderabad-30, India.

P. Sujatha

Seed Science and Technology, Department of Seed Science and Technology Centre (SRTC), College of Agriculture, Rajendranagar, Hyderabad-30, India.

*Author to whom correspondence should be addressed.


Abstract

Sesamum is an important oilseed crop affected by toxigenic fungal pathogens viz., Alternaria, Macrophomina, Fusarium and Aspergillus spp. Among these, A. alternata and M. phaseolina are seed borne pathogens causing yield loss to an extent of 20 to 40 per cent. The effect of A. alternata and M. phaseolina on seed quality parameters of susceptible cv. Swetha was investigated during 2022-2023. The A. alternata and M. phaseolina inoculated and uninoculated seeds of both test pathogens were tested for germination and seedling growth by rolled paper method and pot culture studies. Significant differences in seed germination, seedling length, seedling dry mass, seedling vigour index (SVI) - I and II and seed moisture content were observed in susceptible cv. Swetha. The results indicated that A. alternata recorded lower seed germination percentage (60.50%), seedling length (6.56 cm), dry mass (9.12 mg) and SVI-I and II (656 and 552 respectively) over untreated seeds recording high germination (82.25%), seedling length (14.84 cm), dry mass (13.17 mg) and SVI-I and II (1221 and 1116 respectively). Similar results were observed in M. phaseolina treated seeds where the pathogen treated seeds recorded lower seed germination percentage (70.75%), seedling length (9.42 cm), dry mass (8.71 mg) and SVI-I and II (667 and 599 respectively) than pathogen untreated seeds recording high seed germination (82.50%), seedling length (14.25 cm), dry mass (13.30 mg) and SVI-I and II (1175 and 1097 respectively).

Keywords: Alternaria alternate, Macrophomina phaseolina, sesamum, germination, seedling vigour


How to Cite

Greeshma , S., B. Rajeswari, T. Kiran Babu, and P. Sujatha. 2023. “Effect of Predominant Mycoflora (A. Alternata and M. Phaseolina) on Seed Quality Parameters of Sesamum”. International Journal of Environment and Climate Change 13 (11):1192-99. https://doi.org/10.9734/ijecc/2023/v13i113270.