Climate change impacts and potential benefits of heat-tolerant maize in South Asia
Monitoring of genetic gain in crop genetic improvement programs is necessary to measure the efficiency of the program. Periodic measurement of genetic gain also allows the efficiency of new technologies incorporated into a program to be quantified. Genetic gain within the International Maize and Wheat Improvement Centre (CIMMYT) breeding program for eastern and southern Africa were estimated using time series of maize (Zea mays L.) hybrids. A total of 67 of the best-performing hybrids from regional trials from 2000 to 2010 were selected to form an era panel and evaluated in 32 trials in eight locations across six countries in eastern and southern Africa. Treatments included optimal management, managed and random drought stress, low-nitrogen (N) stress and maize streak virus (MSV) infestation. Genetic gain was estimated as the slope of the regression of grain yield on the year of hybrid release. Genetic gain under optimal conditions, managed drought, random drought, low N, and MSV were estimated to have increased by 109.4, 32.5, 22.7, 20.9 and 141.3 kg ha−1 yr−1, respectively. These results are comparable with genetic gain in maize yields in other regions of the world. New technologies to further increase the rate of genetic gain in maize breeding for eastern and southern Africa are also discussed.
Main Authors: | , , , , , , , , |
---|---|
Format: | Article biblioteca |
Language: | English |
Published: |
Springer
2017
|
Subjects: | AGRICULTURAL SCIENCES AND BIOTECHNOLOGY, Heat Stress Tolerance, HEAT TOLERANCE, MAIZE, CLIMATE CHANGE, HEAT STRESS, |
Online Access: | http://hdl.handle.net/10883/17805 |
Tags: |
Add Tag
No Tags, Be the first to tag this record!
|
id |
dig-cimmyt-10883-17805 |
---|---|
record_format |
koha |
spelling |
dig-cimmyt-10883-178052022-10-28T19:21:57Z Climate change impacts and potential benefits of heat-tolerant maize in South Asia Fantaye, K.T. Zaidi, P.H. Gbegbelegbe, S.D. Boeber, C. Rahut, D.B. Getaneh, F. Seetharam, K. Erenstein, O. Stirling, C. AGRICULTURAL SCIENCES AND BIOTECHNOLOGY Heat Stress Tolerance HEAT TOLERANCE MAIZE CLIMATE CHANGE HEAT STRESS Monitoring of genetic gain in crop genetic improvement programs is necessary to measure the efficiency of the program. Periodic measurement of genetic gain also allows the efficiency of new technologies incorporated into a program to be quantified. Genetic gain within the International Maize and Wheat Improvement Centre (CIMMYT) breeding program for eastern and southern Africa were estimated using time series of maize (Zea mays L.) hybrids. A total of 67 of the best-performing hybrids from regional trials from 2000 to 2010 were selected to form an era panel and evaluated in 32 trials in eight locations across six countries in eastern and southern Africa. Treatments included optimal management, managed and random drought stress, low-nitrogen (N) stress and maize streak virus (MSV) infestation. Genetic gain was estimated as the slope of the regression of grain yield on the year of hybrid release. Genetic gain under optimal conditions, managed drought, random drought, low N, and MSV were estimated to have increased by 109.4, 32.5, 22.7, 20.9 and 141.3 kg ha−1 yr−1, respectively. These results are comparable with genetic gain in maize yields in other regions of the world. New technologies to further increase the rate of genetic gain in maize breeding for eastern and southern Africa are also discussed. 959-970 2016-10-18T21:44:29Z 2016-10-18T21:44:29Z 2017 Article http://hdl.handle.net/10883/17805 10.1007/s00704-016-1931-6 English https://link.springer.com/article/10.1007/s00704-016-1931-6#Sec20 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 PDF Berlin, Germany Springer 3-4 130 Theoretical and Applied Climatology |
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 Heat Stress Tolerance HEAT TOLERANCE MAIZE CLIMATE CHANGE HEAT STRESS AGRICULTURAL SCIENCES AND BIOTECHNOLOGY Heat Stress Tolerance HEAT TOLERANCE MAIZE CLIMATE CHANGE HEAT STRESS |
spellingShingle |
AGRICULTURAL SCIENCES AND BIOTECHNOLOGY Heat Stress Tolerance HEAT TOLERANCE MAIZE CLIMATE CHANGE HEAT STRESS AGRICULTURAL SCIENCES AND BIOTECHNOLOGY Heat Stress Tolerance HEAT TOLERANCE MAIZE CLIMATE CHANGE HEAT STRESS Fantaye, K.T. Zaidi, P.H. Gbegbelegbe, S.D. Boeber, C. Rahut, D.B. Getaneh, F. Seetharam, K. Erenstein, O. Stirling, C. Climate change impacts and potential benefits of heat-tolerant maize in South Asia |
description |
Monitoring of genetic gain in crop genetic improvement programs is necessary to measure the efficiency of the program. Periodic measurement of genetic gain also allows the efficiency of new technologies incorporated into a program to be quantified. Genetic gain within the International Maize and Wheat Improvement Centre (CIMMYT) breeding program for eastern and southern Africa were estimated using time series of maize (Zea mays L.) hybrids. A total of 67 of the best-performing hybrids from regional trials from 2000 to 2010 were selected to form an era panel and evaluated in 32 trials in eight locations across six countries in eastern and southern Africa. Treatments included optimal management, managed and random drought stress, low-nitrogen (N) stress and maize streak virus (MSV) infestation. Genetic gain was estimated as the slope of the regression of grain yield on the year of hybrid release. Genetic gain under optimal conditions, managed drought, random drought, low N, and MSV were estimated to have increased by 109.4, 32.5, 22.7, 20.9 and 141.3 kg ha−1 yr−1, respectively. These results are comparable with genetic gain in maize yields in other regions of the world. New technologies to further increase the rate of genetic gain in maize breeding for eastern and southern Africa are also discussed. |
format |
Article |
topic_facet |
AGRICULTURAL SCIENCES AND BIOTECHNOLOGY Heat Stress Tolerance HEAT TOLERANCE MAIZE CLIMATE CHANGE HEAT STRESS |
author |
Fantaye, K.T. Zaidi, P.H. Gbegbelegbe, S.D. Boeber, C. Rahut, D.B. Getaneh, F. Seetharam, K. Erenstein, O. Stirling, C. |
author_facet |
Fantaye, K.T. Zaidi, P.H. Gbegbelegbe, S.D. Boeber, C. Rahut, D.B. Getaneh, F. Seetharam, K. Erenstein, O. Stirling, C. |
author_sort |
Fantaye, K.T. |
title |
Climate change impacts and potential benefits of heat-tolerant maize in South Asia |
title_short |
Climate change impacts and potential benefits of heat-tolerant maize in South Asia |
title_full |
Climate change impacts and potential benefits of heat-tolerant maize in South Asia |
title_fullStr |
Climate change impacts and potential benefits of heat-tolerant maize in South Asia |
title_full_unstemmed |
Climate change impacts and potential benefits of heat-tolerant maize in South Asia |
title_sort |
climate change impacts and potential benefits of heat-tolerant maize in south asia |
publisher |
Springer |
publishDate |
2017 |
url |
http://hdl.handle.net/10883/17805 |
work_keys_str_mv |
AT fantayekt climatechangeimpactsandpotentialbenefitsofheattolerantmaizeinsouthasia AT zaidiph climatechangeimpactsandpotentialbenefitsofheattolerantmaizeinsouthasia AT gbegbelegbesd climatechangeimpactsandpotentialbenefitsofheattolerantmaizeinsouthasia AT boeberc climatechangeimpactsandpotentialbenefitsofheattolerantmaizeinsouthasia AT rahutdb climatechangeimpactsandpotentialbenefitsofheattolerantmaizeinsouthasia AT getanehf climatechangeimpactsandpotentialbenefitsofheattolerantmaizeinsouthasia AT seetharamk climatechangeimpactsandpotentialbenefitsofheattolerantmaizeinsouthasia AT erensteino climatechangeimpactsandpotentialbenefitsofheattolerantmaizeinsouthasia AT stirlingc climatechangeimpactsandpotentialbenefitsofheattolerantmaizeinsouthasia |
_version_ |
1756086617177587712 |