Heat-tolerant maize for rainfed hot, dry environments in the lowland tropics: from breeding to improved seed delivery
Climate change-induced heat stress combines two challenges: high day- and nighttime temperatures, and physiological water deficit due to demand-side drought caused by increase in vapor-pressure deficit. It is one of the major factors in low productivity of maize in rainfed stress-prone environments in South Asia, affecting a large population of smallholder farmers who depend on maize for their sustenance and livelihoods. The International Maize and Wheat Improvement Center (CIMMYT) maize program in Asia, in partnership with public-sector maize research institutes and private-sector seed companies in South Asian countries, is implementing an intensive initiative for developing and deploying heat-tolerant maize that combines high yield potential with resilience to heat and drought stresses. With the integration of novel breeding tools and methods, including genomics-assisted breeding, doubled haploidy, field-based precision phenotyping, and trait-based selection, new maize germplasm with increased tolerance to heat stress is being developed for the South Asian tropics. Over a decade of concerted effort has resulted in the successful development and release of 20 high-yielding heat-tolerant maize hybrids in CIMMYT genetic backgrounds. Via public–private partnerships, eight hybrids are presently being deployed on over 50,000 ha in South Asian countries, including Bangladesh, Bhutan, India, Nepal, and Pakistan.
Main Authors: | , , , , , , , , , , , , , |
---|---|
Format: | Article biblioteca |
Language: | English |
Published: |
Institute of Crop Sciences
2023
|
Subjects: | AGRICULTURAL SCIENCES AND BIOTECHNOLOGY, Lowland Tropics, CLIMATE CHANGE, DROUGHT, HEAT STRESS, LOWLAND, MAIZE, VAPOUR PRESSURE DEFICIT, Maize, |
Online Access: | https://hdl.handle.net/10883/22722 |
Tags: |
Add Tag
No Tags, Be the first to tag this record!
|
id |
dig-cimmyt-10883-22722 |
---|---|
record_format |
koha |
spelling |
dig-cimmyt-10883-227222024-02-14T20:10:53Z Heat-tolerant maize for rainfed hot, dry environments in the lowland tropics: from breeding to improved seed delivery Zaidi, P.H. Vinayan, M.T. Nair, S.K. Kuchanur, P.H. Kumar, R. Singh, S.B. Tripathi, M.P. Patil, A. Ahmed, S. Hussain, A. Kulkarni, A.P. Wangmo, P. Tuinstra, M.R. Prasanna, B.M. AGRICULTURAL SCIENCES AND BIOTECHNOLOGY Lowland Tropics CLIMATE CHANGE DROUGHT HEAT STRESS LOWLAND MAIZE VAPOUR PRESSURE DEFICIT Maize Climate change-induced heat stress combines two challenges: high day- and nighttime temperatures, and physiological water deficit due to demand-side drought caused by increase in vapor-pressure deficit. It is one of the major factors in low productivity of maize in rainfed stress-prone environments in South Asia, affecting a large population of smallholder farmers who depend on maize for their sustenance and livelihoods. The International Maize and Wheat Improvement Center (CIMMYT) maize program in Asia, in partnership with public-sector maize research institutes and private-sector seed companies in South Asian countries, is implementing an intensive initiative for developing and deploying heat-tolerant maize that combines high yield potential with resilience to heat and drought stresses. With the integration of novel breeding tools and methods, including genomics-assisted breeding, doubled haploidy, field-based precision phenotyping, and trait-based selection, new maize germplasm with increased tolerance to heat stress is being developed for the South Asian tropics. Over a decade of concerted effort has resulted in the successful development and release of 20 high-yielding heat-tolerant maize hybrids in CIMMYT genetic backgrounds. Via public–private partnerships, eight hybrids are presently being deployed on over 50,000 ha in South Asian countries, including Bangladesh, Bhutan, India, Nepal, and Pakistan. 986-1000 2023-10-31T21:05:13Z 2023-10-31T21:05:13Z 2023 Article Published Version https://hdl.handle.net/10883/22722 10.1016/j.cj.2023.06.008 English https://www.sciencedirect.com/science/article/pii/S2214514123000922?via%3Dihub#s0105 Accelerated Breeding United States Agency for International Development (USAID) https://hdl.handle.net/10568/132640 CIMMYT manages Intellectual Assets as International Public Goods. The user is free to download, print, store and share this work. In case you want to translate or create any other derivative work and share or distribute such translation/derivative work, please contact CIMMYT-Knowledge-Center@cgiar.org indicating the work you want to use and the kind of use you intend; CIMMYT will contact you with the suitable license for that purpose Open Access China Institute of Crop Sciences 4 11 2095-5421 The Crop Journal |
institution |
CIMMYT |
collection |
DSpace |
country |
México |
countrycode |
MX |
component |
Bibliográfico |
access |
En linea |
databasecode |
dig-cimmyt |
tag |
biblioteca |
region |
America del Norte |
libraryname |
CIMMYT Library |
language |
English |
topic |
AGRICULTURAL SCIENCES AND BIOTECHNOLOGY Lowland Tropics CLIMATE CHANGE DROUGHT HEAT STRESS LOWLAND MAIZE VAPOUR PRESSURE DEFICIT Maize AGRICULTURAL SCIENCES AND BIOTECHNOLOGY Lowland Tropics CLIMATE CHANGE DROUGHT HEAT STRESS LOWLAND MAIZE VAPOUR PRESSURE DEFICIT Maize |
spellingShingle |
AGRICULTURAL SCIENCES AND BIOTECHNOLOGY Lowland Tropics CLIMATE CHANGE DROUGHT HEAT STRESS LOWLAND MAIZE VAPOUR PRESSURE DEFICIT Maize AGRICULTURAL SCIENCES AND BIOTECHNOLOGY Lowland Tropics CLIMATE CHANGE DROUGHT HEAT STRESS LOWLAND MAIZE VAPOUR PRESSURE DEFICIT Maize Zaidi, P.H. Vinayan, M.T. Nair, S.K. Kuchanur, P.H. Kumar, R. Singh, S.B. Tripathi, M.P. Patil, A. Ahmed, S. Hussain, A. Kulkarni, A.P. Wangmo, P. Tuinstra, M.R. Prasanna, B.M. Heat-tolerant maize for rainfed hot, dry environments in the lowland tropics: from breeding to improved seed delivery |
description |
Climate change-induced heat stress combines two challenges: high day- and nighttime temperatures, and physiological water deficit due to demand-side drought caused by increase in vapor-pressure deficit. It is one of the major factors in low productivity of maize in rainfed stress-prone environments in South Asia, affecting a large population of smallholder farmers who depend on maize for their sustenance and livelihoods. The International Maize and Wheat Improvement Center (CIMMYT) maize program in Asia, in partnership with public-sector maize research institutes and private-sector seed companies in South Asian countries, is implementing an intensive initiative for developing and deploying heat-tolerant maize that combines high yield potential with resilience to heat and drought stresses. With the integration of novel breeding tools and methods, including genomics-assisted breeding, doubled haploidy, field-based precision phenotyping, and trait-based selection, new maize germplasm with increased tolerance to heat stress is being developed for the South Asian tropics. Over a decade of concerted effort has resulted in the successful development and release of 20 high-yielding heat-tolerant maize hybrids in CIMMYT genetic backgrounds. Via public–private partnerships, eight hybrids are presently being deployed on over 50,000 ha in South Asian countries, including Bangladesh, Bhutan, India, Nepal, and Pakistan. |
format |
Article |
topic_facet |
AGRICULTURAL SCIENCES AND BIOTECHNOLOGY Lowland Tropics CLIMATE CHANGE DROUGHT HEAT STRESS LOWLAND MAIZE VAPOUR PRESSURE DEFICIT Maize |
author |
Zaidi, P.H. Vinayan, M.T. Nair, S.K. Kuchanur, P.H. Kumar, R. Singh, S.B. Tripathi, M.P. Patil, A. Ahmed, S. Hussain, A. Kulkarni, A.P. Wangmo, P. Tuinstra, M.R. Prasanna, B.M. |
author_facet |
Zaidi, P.H. Vinayan, M.T. Nair, S.K. Kuchanur, P.H. Kumar, R. Singh, S.B. Tripathi, M.P. Patil, A. Ahmed, S. Hussain, A. Kulkarni, A.P. Wangmo, P. Tuinstra, M.R. Prasanna, B.M. |
author_sort |
Zaidi, P.H. |
title |
Heat-tolerant maize for rainfed hot, dry environments in the lowland tropics: from breeding to improved seed delivery |
title_short |
Heat-tolerant maize for rainfed hot, dry environments in the lowland tropics: from breeding to improved seed delivery |
title_full |
Heat-tolerant maize for rainfed hot, dry environments in the lowland tropics: from breeding to improved seed delivery |
title_fullStr |
Heat-tolerant maize for rainfed hot, dry environments in the lowland tropics: from breeding to improved seed delivery |
title_full_unstemmed |
Heat-tolerant maize for rainfed hot, dry environments in the lowland tropics: from breeding to improved seed delivery |
title_sort |
heat-tolerant maize for rainfed hot, dry environments in the lowland tropics: from breeding to improved seed delivery |
publisher |
Institute of Crop Sciences |
publishDate |
2023 |
url |
https://hdl.handle.net/10883/22722 |
work_keys_str_mv |
AT zaidiph heattolerantmaizeforrainfedhotdryenvironmentsinthelowlandtropicsfrombreedingtoimprovedseeddelivery AT vinayanmt heattolerantmaizeforrainfedhotdryenvironmentsinthelowlandtropicsfrombreedingtoimprovedseeddelivery AT nairsk heattolerantmaizeforrainfedhotdryenvironmentsinthelowlandtropicsfrombreedingtoimprovedseeddelivery AT kuchanurph heattolerantmaizeforrainfedhotdryenvironmentsinthelowlandtropicsfrombreedingtoimprovedseeddelivery AT kumarr heattolerantmaizeforrainfedhotdryenvironmentsinthelowlandtropicsfrombreedingtoimprovedseeddelivery AT singhsb heattolerantmaizeforrainfedhotdryenvironmentsinthelowlandtropicsfrombreedingtoimprovedseeddelivery AT tripathimp heattolerantmaizeforrainfedhotdryenvironmentsinthelowlandtropicsfrombreedingtoimprovedseeddelivery AT patila heattolerantmaizeforrainfedhotdryenvironmentsinthelowlandtropicsfrombreedingtoimprovedseeddelivery AT ahmeds heattolerantmaizeforrainfedhotdryenvironmentsinthelowlandtropicsfrombreedingtoimprovedseeddelivery AT hussaina heattolerantmaizeforrainfedhotdryenvironmentsinthelowlandtropicsfrombreedingtoimprovedseeddelivery AT kulkarniap heattolerantmaizeforrainfedhotdryenvironmentsinthelowlandtropicsfrombreedingtoimprovedseeddelivery AT wangmop heattolerantmaizeforrainfedhotdryenvironmentsinthelowlandtropicsfrombreedingtoimprovedseeddelivery AT tuinstramr heattolerantmaizeforrainfedhotdryenvironmentsinthelowlandtropicsfrombreedingtoimprovedseeddelivery AT prasannabm heattolerantmaizeforrainfedhotdryenvironmentsinthelowlandtropicsfrombreedingtoimprovedseeddelivery |
_version_ |
1792501502855610368 |