Wheat blast - A new challenge to wheat production in South Asia

Authors

  • DEVENDRA PAL SINGH

DOI:

https://doi.org/10.24838/ip.2017.v70.i2.70609

Keywords:

IPM, Magnaporthe oryzae pathotype Triticum, MoT, South Asia, Wheat blast, Wheat

Abstract

Wheat blast or Brosone is caused by Magnaporthe oryzae pathotype Triticum (MoT) B.C. Couch (Anamorph Pyricularia oryzae Triticum). It is a recent disease of wheat originated in 1985 in Brazil and later reported from other countries like Bolivia, Uruguay, Paraguay and Argentina in South American (Iragashi et al.,1986; Prabhu et al.,1992, Perelló et al., 2015). During early 2016 had been reported to occur in Bangladesh (South Asia) (Malaker et al., 2016) in districts close to West Bengal borders of India. Wheat blast is not yet reported in India. The disease is categorized into most damaging diseases of wheat due to its multiple modes of survival (seed, secondary hosts, crop residue and airborne conidia), fast spread and damage to spikes thus causing losses ranging from 20-100%, development of resistance to fungicides, higher rate of mutation and lack of resistance in common wheat varieties. Goulart et al. (2007) reported an average loss of 3.87 q/ha (10.5%) in wheat yield, in the Embrapa Agropecuária Oeste experiment in Brazil while in Indápolis, the losses in grain yield were in the average 6.09 q/ ha (13%). The losses in spike weight were higher (63.4%) in the case of an early infection than with late infection (46.0%). The grains below the infection point in the rachis were larger than the normal ones and may partially compensate for the losses due to empty spikelets.

Downloads

Published

2017-05-25

Issue

Vol. 70 No. 2 (2017): Indian Phytopathology

Section

Awards and Honours

License

For Authors

As soon as an article is accepted for publication, authors are requested to assign copyright of the article (or to grant exclusive publication and dissemination rights) to the publisher (Indian Phytopathlogical Society). This will ensure the widest possible protection and dissemination of information.

For Readers

While the advice and information in this journal is believed to be true and accurate at the date of its publication, the authors, the editors, nor the publisher can accept any legal responsibility for any errors or omissions that may have been made. The publisher makes no warranty, express or implied, with respect to the material contained herein.

All articles published in this journal are protected by copyright, which covers the exclusive rights to reproduce and distribute the article (e.g., as offprints), as well as all translation rights. No material published in this journal may be reproduced photographically or stored on microfilm, in electronic data bases, on video disks, etc., without first obtaining written permission from the publisher. The use of general descriptive names, trade names, trademarks, etc. in this publication, even if not specifically identified, implies that these names are protected by the relevant laws and regulations.

How to Cite

SINGH, D. P. (2017). Wheat blast - A new challenge to wheat production in South Asia. Indian Phytopathology, 70(2), 169-177. https://doi.org/10.24838/ip.2017.v70.i2.70609