ISSN: 0973-7510

E-ISSN: 2581-690X

Open Access
Vinod Upadhyay , K.P.S. Kushwaha and Puja Pandey
Department of Plant Pathology, G.B. Pant University of Agriculture and Technology, Pantnagar, Uttarakhand – 236 145, India.
J Pure Appl Microbiol. 2017;11(1):307-314
https://doi.org/10.22207/JPAM.11.1.38 | © The Author(s). 2017
Received: 04/10/2016 | Accepted: 28/11/2016 | Published: 31/03/2017
Abstract

Among 46 numbers of total germplasms screened, two germplasms Pant P 244 and Pant P 42 showed moderate resistant, 13 germplasms were moderately susceptible, 29 germplasms were found susceptible and two germplasms HFP-4 and HUVP 1 were found highly susceptible. Moderately resistant germplasm showed low AUDPC value (160.83-188.33) with slow infection rate (0.054-0.062). Pustule appeared on these genotypes were small (1.5-1.7mm) as compare to other susceptible genotypes whereas moderately susceptible genotypes scored AUDPC value from 175.83-437.50 with infection rate of 0.051-0.095. Size of the pustules showed high variation of 1.3-4.4mm. Genotypes with susceptible reaction showed AUDPC value of 292.50-797.50. Infection rate was ranged from 0.055-0.113 with pustule size of 2.9-4.8mm. Those genotypes which fall under highly susceptible reaction (HFP-4 and HUVP-1) scored highest AUDPC value of 1078.33-1223.33 with 0.064-0.075 infection rate. They showed largest pustule size of 4.2-4.6mm. Thus, two genotypes showing moderately resistant reaction in the following experiment can be fruitfully integrate with reduced number of fungicidal spray to obtain maximum yield with minimal rust severity.

Keywords

Germplasm, Area under disease progress curve (AUDPC), Pustule, Resistant, Susceptible.

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