Valuable New Leaf or Inflorescence Resistances Ensure Improved Management of White Rust (Albugo candida) in Mustard (Brassica juncea) Crops

Martin J. Barbetti, Caixia Li, Mingpei P. You, D. Singh, A. Agnihotri, S. K. K. Banga, P. S. S. Sandhu, R. Singh, S. S. S. Banga

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7 Citations (Scopus)

Abstract

Field resistances/susceptibilities against Albugo candida race 2V were determined for 29 Indian Brassica juncea varieties and compared with resistant varieties from China (6) and Australia (7). 'Basanti' (AUDPC incidence 46.7; AUDPC severity 29.2) represents the first high-level resistance to race 2V in Indian varieties. Several others showed lower but still useful levels of resistance, including Narendra Ageti Rai-4 (AUDPC incidence 150.6; AUDPC severity 66.8) and JM1 (AUDPC incidence 167.1; AUDPC severity 83.7). Highly susceptible Indian varieties had AUDPC incidence values > 200 and severity > 100. 'Basanti' had least stagheads/plant (0.32), while Narendra Ageti Rai-4 had lowest % plants with stagheads (2.48). In contrast, almost half of Indian varieties had stagheads/plant > 1 and % plants with stagheads > 4, and > 26 for 'Kranti'. The resistance in 'Basanti' paves the way forward towards significantly improved white rust management in mustard in India. JM06011, JM06021, JR049 from Australia and CJB-003 from China had zero leaf incidence. There were significant (P <0.001) relationships between disease incidence with severity (R-2 0.92), stagheads/plant (R-2 0.69) and also % plants with stagheads (R-2 0.60); between disease severity with stagheads/plant (R-2 0.68) and also % plants with stagheads (R-2 0.69); and between stagheads/plant with% plants with stagheads (R-2 0.59).
Original languageEnglish
Pages (from-to)404-411
Number of pages8
JournalJournal of Phytopathology
Volume164
Issue number6
DOIs
Publication statusPublished - 2016

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