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Publication Details
AFRICAN RESEARCH NEXUS
SHINING A SPOTLIGHT ON AFRICAN RESEARCH
The yield correlations of selectable physiological traits in a population of advanced spring wheat lines grown in warm and drought environments
Field Crops Research, Volume 128, Year 2012
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Description
Genetic progress in yield will increase if more traits conferring better agronomic and physiological performance are brought together in the same variety through full exploitation of genotyping and phenotyping techniques in breeding. A set of 288 spring wheat advanced lines was tested in different countries in North Africa, Western and South Asia, as well as in Mexico (total of 12 environments) to: identify high yielding germplasm adapted to the former regions; identify sources of variation for physiological traits; and test the ability of physiological traits to predict yield. A group of high yielding advanced lines has been selected in these environments, but significant genotype by environment interactions were observed and were significantly explained (21% of yield variation) by soil pH and air temperature. Associations between traits were dependent on the environment, specifically TKW was positively associated with yield in almost all environments however in Sudan, negative associations were observed. In contrast cooler CT was consistently associated with yield and the trait showed moderate heritability. Agronomic and physiological variables were able to predict 27% of yield variation across advanced lines (R 2% by ridge regression) using means of all environments and this model became more significant under stress environments (explaining around 34% of yield variation). Results suggested that if drought and heat adaptive traits are brought together in one genotype, yields can be further increased particularly in low yielding environments. © 2012 Elsevier B.V.
Authors & Co-Authors
Lopes, Marta Silva
Mexico, Texcoco
Centro Internacional de Mejoramiento de Maiz y Trigo
Reynolds, M. P.
Mexico, Texcoco
Centro Internacional de Mejoramiento de Maiz y Trigo
Jalal-Kamali, Mohammad Reza
Iran, Karaj
Seed and Plant Improvement Research Institute, Karaj
Moussa, M.
Egypt, Giza
Field Crops Research Institute Fcri
Feltaous, Yousef
Egypt, Giza
Field Crops Research Institute Fcri
Tahir, Izzat Sidahmed Ali
Sudan, Wad Medani
Agricultural Research Corporation Sudan
Lebanon, Beirut
International Center for Agricultural Research in the Dry Areas Syria
Barma, Naresh Chandra Deb
Bangladesh, Gazipur
Bangladesh Agricultural Research Institute
Vargas-Hernández, Mateo
Mexico, Texcoco
Centro Internacional de Mejoramiento de Maiz y Trigo
Mannes, Y.
Mexico, Texcoco
Centro Internacional de Mejoramiento de Maiz y Trigo
Baum, Michael
Lebanon, Beirut
International Center for Agricultural Research in the Dry Areas Syria
Statistics
Citations: 154
Authors: 10
Affiliations: 6
Identifiers
Doi:
10.1016/j.fcr.2011.12.017
Research Areas
Environmental
Genetics And Genomics
Study Design
Cross Sectional Study
Study Locations
Multi-countries
Sudan