INTERNATIONAL JOURNAL OF PURE & APPLIED BIOSCIENCE
ISSN : 2320-7051
International Journal of Pure & Applied Bioscience (IJPAB)
Year : 2019, Volume : 7, Issue : 1
First page : (327) Last page : (332)
Article doi: : http://dx.doi.org/10.18782/2320-7051.7043
Screening of Brassica juncea (L.) Against Downy Mildew and White Rust in Tarai Region of Uttarakhand
S. Ravi1* and R. P. Awasthi2
1Department of Plant Pathology,College of Agriculture, G.B.P.U.A. &T. Pantnagar-263145, Uttarakhand, India
2Department of Plant Pathology,College of Horticulture, VCSG UUHF Bharsar, Pauri Garhwal -246123, Uttarakhand, India
*Corresponding Author E-mail: firstname.lastname@example.org
Received: 3.11.2018 | Revised: 7.12.2018 | Accepted: 16.12.2018
Brassica juncea (L.) Czern. & Coss., The yield potential of these crops are affected by a number of diseases. Among them, white rust (Albugo candida) and downy mildew (Hyaloperonospora brassicae) are the important one. Yield losses with mixture of WR and DM 17 to 60%.The field investigations were carried out both of the year on the basis of resistance and susceptible entries.Use of resistant varieties are considered as effective and environment friendly. Screened out eight accessions of B. juncea against white rust and downy mildew under unprotected field conditions. DM (at 15 days)- Per cent disease index (PDI) ; Genotypes were found as most resistant against downy mildew, EC-399296, EC-399301 and EC-399313, other EC-399299 found resistant reaction and EC-399302 have been observed moderately resistant, Varuna and Kranti came out as susceptible entries. Divya was found most susceptible genotype. WR (at 60, 75 and 90 days)-(PDI); Genotypes EC-399301 and EC-399296 were found as most resistant, EC-399313, EC-399299 resistant, another one EC- 399302 showed moderately resistant reaction, Varuna and Divya came out as susceptible. Kranti was most susceptible genotype, (PDI) was maximum. If it has taken long period of time somewhere it was decreased the (PDI). Staghead incidence (1WBH): EC-399301 and EC-399296 were found as most resistant, EC-399313, EC-399299, and EC- 399302 showed moderately resistant reaction. Varuna and Divya observed as susceptible genotypes. Kranti was most susceptible to staghead incidence. Staghead Severity (1WBH): EC-399301 and EC-399313 were found most resistant to staghead severity. EC-399299, EC-399296 found as resistant and EC- 399302 showed moderately and Kranti, Varuna and Divya were susceptible.
Key words: Brassica juncea, Downy mildew, White rust, PDI, Staghead incidence, Staghead severity, Screening, Tarai.
Full Text : PDF; Journal doi : http://dx.doi.org/10.18782
Cite this article Ravi, S. and Awasthi, R.P., Screening of Brassica juncea (L.) Against Downy Mildew and White Rust in Tarai Region of Uttarakhand, Int. J. Pure App. Biosci.7 (1): 327-332 (2019). doi: http://dx.doi.org/10.18782/2320-7051.7043