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Occurrence of wheat blast in Bangladesh and its implications for South Asian wheat production

Published on Jan 1, 2017in Indian Journal of Genetics and Plant Breeding0.465
· DOI :10.5958/0975-6906.2017.00001.3
A. K. Chowdhury5
Estimated H-index: 5
,
Mahender Singh Saharan1
Estimated H-index: 1
+ 10 AuthorsArun K. Joshi34
Estimated H-index: 34
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Abstract
The first recorded occurrence in Asia of wheat blast caused by Magnaporthe oryzae, pathotype Triticum (synonym Pyricularia oryzae) occurred in Bangladesh in March 2016. Crop losses of up to 90% have been reported, with latesown wheat suffering particularly badly. The emergence of this disease has raised concern in neighboring countries where wheat represents a significant crop, most notably in India and Nepal. The existence of effective genetic resistance is in doubt, so for the moment the sole means of control is via the application of fungicides and adoption of beneficial cultural practices. The disease has been endemic in parts of South America for the last 30 years, so only a coordinated program of research and development has the potential to deliver rapid progress in combating the disease. In addition to evaluating and deploying genetic resistance and applying fungicides on an occasional basis, some control could be made possible by altering current crop rotation practice and/or manipulating the sowing time to promote disease escape.
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Cited By4
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#1Akbar HossainH-Index: 4
#2Khondoker Abdul Mottaleb (CIMMYT: International Maize and Wheat Improvement Center)H-Index: 13
Last. Naresh C.D. BarmaH-Index: 1
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For the first time in history outside of Latin America, deadly wheat blast caused by the fungus Magnaporthe oryzae pathotype triticum (MoT) emerged in the 2015–2016 wheat ( Triticum aestivum L.) season of Bangladesh. Bangladesh, a country in South Asia, has a population of nearly 160 million, of which 24.3% are classified as poor. Consequently, malnutrition and micronutrient deficiency are highly prevalent, particularly among school going children and lactating women. Bangladesh Wheat and Maize ...
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#1Ahmad Nawaz (H.I., S.I.: University of Agriculture, Faisalabad)H-Index: 15
#2Muhammad Farooq (Sultan Qaboos University)H-Index: 52
Last. Rattan Lal (OSU: Ohio State University)H-Index: 119
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The rice (Oryza sativa L.)–wheat (Triticum aestivum L.) cropping system is the largest agricultural production system worldwide, and is practised on 24 Mha in Asia. Many factors have threatened the long-term sustainability of conventional rice–wheat cropping systems, including degradation of soil health, water scarcity, labour/energy crises, nutrient imbalances, low soil organic matter contents, complex weed and insect flora, the emergence of herbicide-resistant weeds, and greenhouse-gas emissio...
8 CitationsSource
#1Naresh C.D. BarmaH-Index: 1
Last. Md. Motiar Rohman (Bangladesh Agricultural Research Institute)H-Index: 7
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In Bangladesh after rice, wheat is considered the second most important staple cereal. Although Bangladesh is one of the principal rice-consuming countries with per capita consumption of rice 171 kg year−1, the consumption of wheat in Bangladesh has intensely increased over the years. From the year 1961 to 2013, the annual per capita wheat intake in Bangladesh has increased by 102% from 8.62 to 17.47 kg. Currently, Bangladesh mostly relies on import to meet surging demand. During 2011–2013, trie...
2 CitationsSource
#1Khondoker Abdul Mottaleb (CIMMYT: International Maize and Wheat Improvement Center)H-Index: 13
#2Pawan K. Singh (CIMMYT: International Maize and Wheat Improvement Center)H-Index: 20
Last. Olaf Erenstein (CIMMYT: International Maize and Wheat Improvement Center)H-Index: 27
view all 9 authors...
New biotic stresses have emerged around the globe over the last decades threatening food safety and security. In 2016, scientists confirmed the presence of the devastating wheat-blast disease in Bangladesh, South Asia–its first occurrence outside South America. Severely blast-affected wheat fields had their grain yield wiped out. This poses a severe threat to food security in a densely-populated region with millions of poor inhabitants where wheat is a major staple crop and per capita wheat cons...
12 CitationsSource