Screening of South Indian Culinary Melon (Cucumis melo subsp. agrestis var. acidulus) Accessions for Downy Mildew Disease under Natural Epiphytotic Condition

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Authors

  • Ratnakar M. Shet College of Horticulture Sirsi, University of Horticultural Sciences, Bagalkot, Karnataka (581 401), India
  • A. Prashantha KRCCH Arabhavi, University of Horticultural Sciences, Bagalkot, Karnataka (591 218), India
  • P. S. Mahanthesh College of Horticulture Sirsi, University of Horticultural Sciences, Bagalkot, Karnataka (581 401), India
  • K. S. Sankarappa College of Horticulture, Bangalore, University of Horticultural Sciences, Bagalkot, Karnataka (560 065), India

Keywords:

Accessions, culinary melon, downy mildew, PDI, resistant breeding

Abstract

Culinary melon also known as non dessert cucumber(Cucumis melo subsp. agrestis var. acidulus)belongs to the family Cucurbitaceae. It is widely cultivated in Southern parts of Indian subcontinent. It is mainly utilized for preparation of lentil soup, sambar, dosa, palya and chutney. 70 accessions were collected from six South Indian states namely Karnataka, Kerala, Andhra Pradesh, Tamil Nadu, Telangana and Goa. The accessions were evaluated for incidence of downy mildew resistance during Kharif 2018 under natural condition. The percent disease index (PDI) for downy mildew ranged from 3.70 to 48.64%. 10 accessions showed resistance to downy mildew. Among them, accession MS21 showed resistance with average least PDI of 3.70 followed by MS 6 (6.54). 50 accessions were found to be moderately resistant with average PDI ranging from 20 to 39.80. 12 accessions were found susceptible with PDI ranging from 41 to 49. None of the accession was found highly susceptible to the disease. The resistant accessions can be utilized as donor parents for resistant breeding in the improvement of culinary melon as well as melon group of vegetables.

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Published

22-11-2021

How to Cite

Shet, R. M., Prashantha, A., Mahanthesh, P. S., & Sankarappa, K. S. (2021). Screening of South Indian Culinary Melon (Cucumis melo subsp. agrestis var. acidulus) Accessions for Downy Mildew Disease under Natural Epiphytotic Condition. International Journal of Economic Plants, 8(Nov, 4), 211–216. Retrieved from https://ojs.pphouse.org/index.php/IJEP/article/view/4697

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