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_d63151
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003 MX-TxCIM
005 20230818155459.0
008 201218s2020 xxu||||| |||| 00| 0 eng d
020 _a9780429470554 (eBook)
040 _aMX-TxCIM
041 _aeng
100 1 _aSharma, R.K.
_gFormerly Global Wheat Program
_8INT3065
_9888
245 1 0 _aChapter 1. Wheat blast :
_ba Global Threat to Wheat Production
260 _aBoca Raton (USA) :
_bCRC Press,
_c2020.
520 _aWheat blast is a deadly disease that can cause 10%–100% yield loss. The disease was initially confined to South America before its first outbreak in Bangladesh in 2016, posing a great threat to global wheat production. The chemical control of wheat blast is often of low efficiency and is expensive for farmers, making host resistance the best choice because it is an economical and environmentally friendly approach. In this chapter, we review the research on host resistance sources, the identification of resistance genes and the possible contribution from modern technologies to cope with this devastating disease. A resistance source with good field blast resistance is limited, especially those of non-2NS translocation. So far, 10 blast-resistant genes have been identified; however, only five were host-resistant genes against the wheat blast pathogen, including Rmg2, Rmg3, Rmg7, Rmg8 and RmgGR119. Unfortunately three of these five host-resistant genes have been overcome by new blast isolates, and Rmg8 and RmgGR119 remain to be evaluated. It is imperative to identify new sources of blast resistance and non-2NS-based resistance genes for use in breeding. Synergic efforts are indispensable for the global research community; therefore, the International Wheat Blast Consortium plays an important role in coordinating wheat blast–related research and breeding activities. Recent efforts of CIMMYT on wheat blast resistance screening and breeding are also summarised in this review. Wheat blast is a deadly disease that can cause 10%–100% yield loss. The disease was initially confined to South America before its first outbreak in Bangladesh in 2016, posing a great threat to global wheat production. The chemical control of wheat blast is often of low efficiency and is expensive for farmers, making host resistance the best choice because it is an economical and environmentally friendly approach. This chapter reviews the research on host resistance sources, the identification of resistance genes and the possible contribution from modern technologies to cope with this devastating disease. The biggest problem for blast resistance breeding is a lack of resistance sources that could be utilised in wheat breeding. Immediately after the first report of this disease in Brazil, several studies were conducted in order to identify a resistant germplasm.
526 _aWC
_cFP3
546 _aText in English
650 7 _2AGROVOC
_93421
_aBlasts (of plants)
650 7 _aWheat
_gAGROVOC
_2
_91310
650 7 _aDisease resistance
_gAGROVOC
_2
_91077
650 7 _aPlant diseases
_gAGROVOC
_2
_91206
700 1 _aPawan Kumar Singh
_gGlobal Wheat Program
_8INT2868
_9868
773 0 _tWheat Blast
_gp. 1-18
_dBoca Raton (USA) : CRC Press, 2020.
_z9780429470554 (eBook)
942 _cBP
_n0
_2ddc