Influence of powdery mildew disease on sunflower and its possible management using Ampelomyces spp.


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Influence of powdery mildew disease on sunflower and its possible management using Ampelomyces spp.

Authors

  • L RAJENDRAN Tamil Nadu Agricultural University, Coimbatore – 641 003, Tamil Nadu
  • T SELVAKUMAR Tamil Nadu Agricultural University, Coimbatore – 641 003, Tamil Nadu
  • R SASIKALA Tamil Nadu Agricultural University, Coimbatore – 641 003, Tamil Nadu
  • P L VISWANATHAN Tamil Nadu Agricultural University, Coimbatore – 641 003, Tamil Nadu

https://doi.org/10.56739/jor.v37iSpecialissue.141057

Keywords:

Ampelomyces spp., Powdery mildew, Seed yield, Sunflower

Abstract

Among the different sunflower entries tested under artificial net-house conditions against powdery mildew
disease, COSF 15 B showed highly susceptible reaction (HS) compared to CO 2 Hybrid (S), Sunbred 275 (S), Morden (HS) and CO 3 Hybrid (MR). Further, the entry recorded less mean seed volume weight (33.5 g/100 ml), oil content (33.5%) with a disease score of 9 under field conditions. An attempt has been made to isolate the naturally occurring mycoparasitic pycnidial fungi Ampelomyces spp. from powdery mildew infected leaves and four isolates were obtained. These isolated were slow growing on potato dextrose agar medium and produced pycnidia. These four isolates gave a 560 bp amplicon from the ITS region.

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References

Sujatha M, Soni P K and Gonela S K 2016. Morphological and molecular characterization of powdery mildew on sunflower (Helianthus annuus L.), alternate hosts and weeds commonly found in and around Sunflower fields in India. Phytoparasitica, 44 (3): 353-367.

Angeli D, Puopolo G, Maurhofer M, Gessler C and Pertot I 2012. Is the mycoparasitic activity of Ampelomyces quisqualis biocontrol strains related to phylogeny and hydrolytic enzyme production?. Biological Control, 63:

–358.

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Submitted

2023-08-18

Published

2020-03-12

How to Cite

L RAJENDRAN, T SELVAKUMAR, R SASIKALA, & P L VISWANATHAN. (2020). Influence of powdery mildew disease on sunflower and its possible management using Ampelomyces spp.: Influence of powdery mildew disease on sunflower and its possible management using Ampelomyces spp. Journal of Oilseeds Research, 37(Specialissue). https://doi.org/10.56739/jor.v37iSpecialissue.141057