Phenotypic screening of Indian mustard genotypes against white rust (Albugo candida) under artificial and natural epiphytotic conditions
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Authors
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ADSS Ajay Nikhil
Rani Lakshmi Bai Central Agricultural University, Jhansi 284003, Uttar Pradesh, India
Author
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Rakesh Choudhary
Rani Lakshmi Bai Central Agricultural University, Jhansi 284003, Uttar Pradesh, India
Author
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Anshuman Singh
Rani Lakshmi Bai Central Agricultural University, Jhansi 284003, Uttar Pradesh, India
Author
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Shubha Trivedi
Rani Lakshmi Bai Central Agricultural University, Jhansi 284003, Uttar Pradesh, India
Author
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Kshitij Gupta
Rani Lakshmi Bai Central Agricultural University, Jhansi 284003, Uttar Pradesh, India
Author
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Vijay Kumar Yadav
2ICAR-Indian Grassland and Fodder Research Institute, Jhansi 284003, Uttar Pradesh, India
Author
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SK Chaturvedi
Rani Lakshmi Bai Central Agricultural University, Jhansi 284003, Uttar Pradesh, India
Author
Abstract
Due to the variation among the various fungal races of Albugo candida, the known resistance genes against white rust
disease are often inoperative. Therefore, to ensure durable resistance, new sources of resistance that are effective against
various races are required. The present experiment was carried out during Rabi season of 2022-23 to screen the 208
Indian mustard germplasm for identication of white rust tolerant genotypes under artificial epiphytotic conditions with
three fungal isolates viz., Morena, Bharatpur and Jhansi, and natural conditions. Results, revealed that, out of 208
germplasm accessions evaluated, twenty-two accessions showed resistance reaction (PDI: Percent disease index = 0 to 5
%) towards white rust disease under natural conditions. Out of these twenty-two accessions ten accessions viz., IC
320378, EC-766312, EC-766594, EC-766470, EC-766234, EC-766292, EC-766576, EC-766134, IC-766313 and
DRMR-132 showed resistance reaction (PDI = 5-10 %) under artificial conditions against all the three fungal isolates.
Whereas, twenty-three genotypes showed moderate resistance in natural conditions. Out of these twenty-three, ten
accessions viz., DRMR-582, AJ-11, DTM-50, EC-766141, EC -766557, EC-766069, EC-766115, EC-766616, EC
766555 and IC-766029 showed moderately resistant reaction against three isolates under artificially inoculated
conditions. Therefore, these novel white rust resistant sources could be used as potential donors for developing durable
white rust resistant cultivars of Indian mustard.
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