Identification of bitter gourd genotypes with field tolerance to viral diseases

Identification of bitter gourd genotypes with field tolerance to viral diseases

Authors

  • A.C. Asna College of Horticulture, Kerala Agricultural University, Vellanikkara, Thrissur-650 686, Kerala, India.
  • Jiji Joseph College of Horticulture, Kerala Agricultural University, Vellanikkara, Thrissur-650 686, Kerala, India.
  • P. Sainamole Kurien College of Horticulture, Kerala Agricultural University, Vellanikkara, Thrissur-650 686, Kerala, India.
  • K. Joseph John Principal Scientist , NBPGR, Regional station KAU P.O

Keywords:

resistance breeding

Abstract

Diseases caused by viruses are a major problem in bitter gourd throughout India, causing considerable yield loss. Use of host plant resistance is the cheapest and effective disease management strategy. In the present investigation 50 genotypes of Momordica charantia var. muricata along with 3 susceptible check varieties viz., Preethi, Priyanka and Pusa purvi were screened against viral infections under natural epiphytotic conditions during the years 2016 and 2017. Both per cent disease severity (PDS) and area under disease progress curve (AUDPC) were calculated to assess and categorize the disease resistance in bitter gourd. They showed varying degrees of response against viral infection when categorized on 0-5 scale. Among 53 accessions evaluated, five were found resistant, nine moderately resistant, 25 moderately susceptible, 11 susceptible and two highly susceptible. None of the genotypes recorded immune response. The resistant genotypes can be utilized in breeding programme to evolve resistant varieties.

Author Biographies

A.C. Asna, College of Horticulture, Kerala Agricultural University, Vellanikkara, Thrissur-650 686, Kerala, India.

Dept. of Plant Breeding and Genetics COH, Vellanikkara

Jiji Joseph, College of Horticulture, Kerala Agricultural University, Vellanikkara, Thrissur-650 686, Kerala, India.

Professor , Department of plant breeding and Genetics , College of Horticulture, KAU

P. Sainamole Kurien, College of Horticulture, Kerala Agricultural University, Vellanikkara, Thrissur-650 686, Kerala, India.

Professor, College of Horticulture, KAU

K. Joseph John, Principal Scientist , NBPGR, Regional station KAU P.O

Principal Scientist

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Published

22-10-2018

How to Cite

Asna, A., Joseph, J., Sainamole Kurien, P., & Joseph John, K. (2018). Identification of bitter gourd genotypes with field tolerance to viral diseases. Journal of Tropical Agriculture, 56(1). Retrieved from https://jtropag.kau.in/index.php/ojs2/article/view/618

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