Screening of Brassica juncea (L.) Against Downy Mildew and White Rust in Tarai Region of Uttarakhand

White rust (Albugo candida) is a highly destructive disease of oilseed Brassicas such as Brassica juncea and B. rapa. Most commercial B. juncea or B. rapa varieties are highly susceptible and yield losses from combined infection of leaves and inflorescences can be up to 20% or 60% in Australia and India, respectively. In Australia, canola-quality B. juncea has been developed to extend oilseed Brassica production into lower rainfall areas, with the first commercial B. juncea canola-quality variety planned for release in 2006. It is essential to identify useful sources of host resistance in B. juncea as breeding and/or selection of material for resistance is the most cost-effective method of delivering control for farmers. Three experiments were undertaken under controlled-environmental conditions to identify the best methods of characterising host resistance and to identify sources of resistance in B. juncea germplasm from Australia, China, and India. Forty-four B. juncea genotypes, viz. 22 from India, 12 from Australia, and 10 from China, were tested. Four Chinese genotypes (CBJ-001, CBJ-002, CBJ-003, CBJ-004) and one Australian genotype (JR049) consistently showed high resistance to A. candida across the different plant growth stages against a pathotype prevailing in Australia. Similarly, the most susceptible genotypes (viz. Indian genotypes RH781, RL1359, RH819) were extremely susceptible irrespective of the plant growth stage. Overall, although disease severity on cotyledons and leaves at the different growth stages was significantly and positively correlated, there was, however, no significant correlation between the number of stagheads and any of the other disease parameters measured. Our study demonstrates that controlled-environmental conditions are suitable for rapid identification of resistant genotypes and that genotypes with high levels of resistance can be reliably identified at the cotyledonary, seedling, or flowering stages.

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Centennial Brown brown condiment mustard

Canadian Journal of Plant Science ◽

10.4141/cjps08146 ◽

2009 ◽

Vol 89 (2) ◽

pp. 337-340 ◽

Cited By ~ 2

Author(s):

G. Rakow ◽

J. P. Raney ◽

D. Rode ◽

J. Relf-Eckstein

Keyword(s):

Grain Yield ◽

Brassica Juncea ◽

Seed Quality ◽

Leptosphaeria Maculans ◽

Research Centre ◽

Glucosinolate Content ◽

Market Place ◽

Improvement Program ◽

Canadian Prairies ◽

White Rust

Brown condiment mustard (Common Brown) has about 10% lower grain yield than oriental condiment mustard (yellow seeded), which both belong to the same species [Brassica juncea (L.) Czern.]. Yield improvements in brown condiment mustard are therefore of great importance. The Saskatoon Research Centre of AAFC initiated a condiment brown mustard improvement program in 1996 applying pedigree selection of single plants from the condiment brown mustard cultivar Blaze, which resulted in the selection and registration of the cultivar Centennial Brown. Centennial Brown yielded 3.2% more grain than the landrace Common Brown, on average over 81 location years in 9 yr of condiment mustard Co-op tests (1999–2007) and was well adapted to the mustard-growing areas of the Canadian prairies. Support for registration was based on 6 yr of Co-op tests. Centennial Brown had the same maturity (91 d) and was 5 cm taller (116 cm) than Common Brown. It had 1.5% lower fixed oil (36.6%) and 1.2% greater protein content (30.0%) compared with Common Brown. It had 0.4 g heavier seed (2.96 g 1000 seed-1) than Common Brown. Centennial Brown had 0.9 mg g seed-1 greater allyl glucosinolate content than Common Brown (9.15 mg g seed-1). Green seed counts were low in Centennial Brown (0.64%) compared with Common Brown (0.79%). This was confirmed in chlorophyll content measurements, 4.76 mg kg-1 for Centennial Brown and 5.24 mg kg-1 for Common Brown. Centennial Brown was resistant to blackleg disease [Leptosphaeria maculans (Desm.) Ces. et de Not.] and highly susceptible to the B. juncea races of white rust [Albugo candida (Pers.) Kuntze], equal to Common Brown. Centennial Brown will quickly replace Common Brown in the market place because of its increased grain yield and much superior seed quality. Key words: Brassica juncea (L.) Czern., cultivar description, grain yield, seed quality

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Identification of RFLP markers linked to the white rust resistance gene (Acr) in mustard (Brassica juncea (L.) Czern. and Coss.)

Genome ◽

10.1139/gen-41-4-626 ◽

1998 ◽

Vol 41 (4) ◽

pp. 626-628 ◽

Cited By ~ 8

Author(s):

W.Y. Cheung ◽

R.K. Gugel ◽

B.S. Landry

Keyword(s):

Resistance Gene ◽

Brassica Juncea ◽

Rust Resistance ◽

Rust Resistance Gene ◽

Rflp Markers ◽

White Rust

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Association or Mixed Infection of Downy Mildew and White Rust Disease Complex

Downy Mildew Disease of Crucifers: Biology, Ecology and Disease Management ◽

10.1007/978-981-10-7500-1_10 ◽

2017 ◽

pp. 199-213

Author(s):

Govind Singh Saharan ◽

Naresh Mehta ◽

Prabhu Dayal Meena

Keyword(s):

Downy Mildew ◽

Mixed Infection ◽

Rust Disease ◽

Disease Complex ◽

White Rust

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INHERITANCE OF RESISTANCE TO Albugo Candida Race 2 IN MUSTARD (Brassica Juncea (L.) Czern.)

Canadian Journal of Plant Science ◽

10.4141/cjps88-039 ◽

1988 ◽

Vol 68 (2) ◽

pp. 297-300 ◽

Cited By ~ 20

Author(s):

A. S. TIWARI ◽

G. A. PETRIE ◽

R. K. DOWNEY

Keyword(s):

Brassica Juncea ◽

Nuclear Genes ◽

Growth Chamber ◽

Inheritance Of Resistance ◽

Resistant Parent ◽

Albugo Candida ◽

White Rust ◽

Race 2 ◽

Made In

The inheritance of resistance to white rust (Albugo Candida) race 2 in mustard (Brassica juncea) was studied in crosses involving one resistant and two susceptible cultivars. Inoculations were made in a growth chamber followed by growth of the plants under greenhouse conditions. The reaction of the F1 was like the resistant parent, indicating that resistance is dominant and controlled by nuclear genes. Backcrosses of F1 plants to the resistant parent showed the same reactions as that of the resistant parent. Backcrosses of F1 to the susceptible parents segregated in a 1:1 ratio of resistant to susceptible. The F2 segregation of resistant and susceptible plants gave a good fit to a 3:1 ratio. The study revealed that resistance is monogenic and could be easily transferred to adapted susceptible genotypes via backcrossing.Key words: Brassica juncea, Albugo Candida, mustard, white rust

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Transgenic Pearl Millet Male Fertility Restorer Line (ICMP451) and Hybrid (ICMH451) Expressing Brassica juncea Nonexpressor of Pathogenesis Related Genes 1 (BjNPR1) Exhibit Resistance to Downy Mildew Disease

PLoS ONE ◽

10.1371/journal.pone.0090839 ◽

2014 ◽

Vol 9 (3) ◽

pp. e90839 ◽

Cited By ~ 8

Author(s):

Ramadevi Ramineni ◽

Vijayakumar Sadumpati ◽

Venkateswara Rao Khareedu ◽

Dashavantha Reddy Vudem

Keyword(s):

Downy Mildew ◽

Brassica Juncea ◽

Pearl Millet ◽

Male Fertility ◽

Restorer Line ◽

Fertility Restorer ◽

Pathogenesis Related ◽

Transgenic Pearl Millet ◽

Downy Mildew Disease

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AAC Brown 120 brown mustard

Canadian Journal of Plant Science ◽

10.1139/cjps-2018-0123 ◽

2018 ◽

Vol 98 (6) ◽

pp. 1406-1408

Author(s):

Bifang Cheng ◽

David J. Williams

Keyword(s):

Brassica Juncea ◽

Double Haploid ◽

Microspore Culture ◽

Western Canada ◽

White Rust ◽

Hybrid Plants ◽

Check Variety ◽

Oriental Mustard

AAC Brown 120 is a double-haploid (DH) brown mustard (Brassica juncea) variety. It was produced using a microspore culture from F1 hybrid plants resulting from a cross between the elite brown mustard DH line B474DH100 and the elite oriental mustard DH line O60DH151. AAC Brown 120 has significantly higher (12%) yield than the check variety Centennial Brown. It is resistant to white rust races 2a and 2v, whereas Centennial Brown is susceptible to races 2a and 2v. AAC Brown 120 is well adapted to all mustard-growing areas of western Canada.

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