Pathogenic potential of seed mycobiota of Helianthus annuus L.

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Research Articles | Published:

Print ISSN : 0970-4078.
Online ISSN : 2229-4473.
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Doi: 10.1007/s42535-022-00498-w
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Keywords: Seed mycobiota, Seedling vigour, Sunflower, Seed germination


Abstract


The seed mycobiota associated naturally with the oil seeds causes seed deterioration making them unfit for consumption and oil extract. The seed borne fungi (mycobiota) inhibits seed germination, seedling emergence and causes diseases to the crop of sunflower (Helianthus annuus L.). The seed mycobiota of sunflower seeds was detected by standard blotter method (SBM) and agar plate method (APM). Eight most dominant fungi detected on cloth stored seeds were collected from different sunflower cultivated areas. Incidence of Alternaria helianthi was maximum in both the methods (SBM and APM) using unsterilized seeds i.e., 9.4% and 8.5%, respectively. However, lower incidence was detected in Alternaria alternata. The percent germination of seeds was markedly suppressed by all fungi. Maximum percent reduction in germination over control was observed in Curvularia lunata (38.0%). The maximum decrease in plumule length was observed in Fusarium moniliforme (39.27 mm) followed by F. equiseti (42.30 mm) while maximum reduction in radicle length was also observed in seedling developed with F. moniliforme (23.20 mm) followed by F. equiseti (24.22 mm). Aspergillus niger and R. stolonifer did not shown significant affect on plumule and radicle length. So, all tested fungi played important role in causing diseases in the fields and also damaged the seeds under storage conditions.



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Acknowledgements


The authors are thankful to the Principal, Government Girls Degree College, Bareilly, UP, for providing necessary facilities and infrastructure to carry out the research work. We also extend our sincere thanks to Dr. Md. Firoze Quamar, Scientist “D,”Birbal Sahni Institute of Palaeosciences (BSIP), Lucknow, UP, for encouragement and scientific guidance. Two anonymous reviewers are thanked for their authoritative suggestions which helped us to significantly improve the earlier version of the manuscript. V.V. Patel thanks to Editors, Vegetos for their suggestions to improve the manuscript and also grateful to Prof (Dr) S.K. Bhatnagar, Editor-in Chief, Vegetos for encouragement.


Author Information


Patel Vikas Verma
Department of Botany, Government Girls Degree College, Bareilly M.J.P. Rohilkhand University, Bareilly, India
vikasbotany@gmail.com