Show simple item record

Climate change impacts and potential benefits of heat-tolerant maize in South Asia

dc.contributor.authorTesfaye, K.
dc.contributor.authorZaidi, P.H.
dc.contributor.authorGbegbelegbe, Sika
dc.contributor.authorBoeber, C.
dc.contributor.authorRahut, D.B.
dc.contributor.authorGetaneh, F.
dc.contributor.authorSeetharam, K.
dc.contributor.authorErenstein, Olaf
dc.contributor.authorStirling, Clare M.
dc.date.accessioned2019-12-04T11:04:07Z
dc.date.available2019-12-04T11:04:07Z
dc.date.issued2016
dc.identifier.citationTesfaye, K., Zaidi, P.H., Gbegbelegbe, S., Boeber, C., Rahut, D.B., Getaneh, F., ... & Stirling, C. (2016). Climate change impacts and potential benefits of heat-tolerant maize in South Asia. Theoretical and Applied Climatology, 1-12.
dc.identifier.issn0177-798X
dc.identifier.urihttps://hdl.handle.net/20.500.12478/1344
dc.descriptionArticle Purchased; Published online: 14 September 2016
dc.description.abstractMaize is grown by millions of smallholder farmers in South Asia (SA) under diverse environments. The crop is grown in different seasons in a year with varying exposure to weather extremes, including high temperatures at critical growth stages which are expected to increase with climate change. This study assesses the impact of current and future heat stress on maize and the benefit of heat-tolerant varieties in SA. Annual mean maximum temperatures may increase by 1.4–1.8 °C in 2030 and 2.1–2.6 °C in 2050, with large monthly, seasonal, and spatial variations across SA. The extent of heat stressed areas in SA could increase by up to 12 % in 2030 and 21 % in 2050 relative to the baseline. The impact of heat stress and the benefit from heat-tolerant varieties vary with the level of temperature increase and planting season. At a regional scale, climate change would reduce rainfed maize yield by an average of 3.3–6.4 % in 2030 and 5.2–12.2 % in 2050 and irrigated yield by 3–8 % in 2030 and 5–14 % in 2050 if current varieties were grown under the future climate. Under projected climate, heat-tolerant varieties could minimize yield loss (relative to current maize varieties) by up to 36 and 93 % in 2030 and 33 and 86 % in 2050 under rainfed and irrigated conditions, respectively. Heat-tolerant maize varieties, therefore, have the potential to shield maize farmers from severe yield loss due to heat stress and help them adapt to climate change impacts.
dc.description.sponsorshipBill & Melinda Gates Foundation
dc.description.sponsorshipUnited States Agency for International Development
dc.format.extent1-12
dc.language.isoen
dc.subjectClimate Change
dc.subjectHeat Stress
dc.subjectHeat Tolerance
dc.subjectMaize
dc.subjectSouth Asia
dc.titleClimate change impacts and potential benefits of heat-tolerant maize in South Asia
dc.typeJournal Article
dc.description.versionPeer Review
cg.contributor.crpMaize
cg.contributor.crpClimate Change, Agriculture and Food Security
cg.contributor.affiliationInternational Maize and Wheat Improvement Center
cg.contributor.affiliationInternational Institute of Tropical Agriculture
cg.coverage.regionAsia
cg.coverage.regionSouth Asia
cg.coverage.countryAfghanistan
cg.coverage.countryBangladesh
cg.coverage.countryBhutan
cg.coverage.countryIndia
cg.coverage.countryNepal
cg.coverage.countryPakistan
cg.coverage.countrySri Lanka
cg.isijournalISI Journal
cg.authorship.typesCGIAR multi-centre
cg.iitasubjectClimate Change
cg.iitasubjectSmallholder Farmers
cg.journalTheoretical and Applied Climatology
cg.howpublishedFormally Published
cg.accessibilitystatusOpen Access
local.dspaceid79309
cg.targetaudienceScientists
cg.identifier.doihttps://dx.doi.org/10.1007/s00704-016-1931-6


Files in this item

Thumbnail
Name:
Tesfaye-etal-2016-HTMaize.pdf
Size:
5.483Mb
Format:
PDF
View/Open

This item appears in the following Collection(s)

Show simple item record