Skip to content
Home
About Us
Resources
Profiles Metrics
Authors Directory
Institutions Directory
Top Authors
Top Institutions
Top Sponsors
AI Digest
Contact Us
Menu
Home
About Us
Resources
Profiles Metrics
Authors Directory
Institutions Directory
Top Authors
Top Institutions
Top Sponsors
AI Digest
Contact Us
Home
About Us
Resources
Profiles Metrics
Authors Directory
Institutions Directory
Top Authors
Top Institutions
Top Sponsors
AI Digest
Contact Us
Menu
Home
About Us
Resources
Profiles Metrics
Authors Directory
Institutions Directory
Top Authors
Top Institutions
Top Sponsors
AI Digest
Contact Us
Publication Details
AFRICAN RESEARCH NEXUS
SHINING A SPOTLIGHT ON AFRICAN RESEARCH
agricultural and biological sciences
QTL for yield and associated traits in the Seri/Babax population grown across several environments in Mexico, in the West Asia, North Africa, and South Asia regions
Theoretical and Applied Genetics, Volume 126, No. 4, Year 2013
Notification
URL copied to clipboard!
Description
Heat and drought adaptive quantitative trait loci (QTL) in a spring bread wheat population resulting from the Seri/Babax cross designed to minimize confounding agronomic traits have been identified previously in trials conducted in Mexico. The same population was grown across a wide range of environments where heat and drought stress are naturally experienced including environments in Mexico, West Asia, North Africa (WANA), and South Asia regions. A molecular genetic linkage map including 475 marker loci associated to 29 linkage groups was used for QTL analysis of yield, days to heading (DH) and to maturity (DM), grain number (GM2), thousand kernel weight (TKW), plant height (PH), canopy temperature at the vegetative and grain filling stages (CTvg and CTgf), and early ground cover. A QTL for yield on chromosome 4A was confirmed across several environments, in subsets of lines with uniform allelic expression of a major phenology QTL, but not independently from PH. With terminal stress, TKW QTL was linked or pleiotropic to DH and DM. The link between phenology and TKW suggested that early maturity would favor the post-anthesis grain growth periods resulting in increased grain size and yields under terminal stress. GM2 and TKW were partially associated with markers at different positions suggesting different genetic regulation and room for improvement of both traits. Prediction accuracy of yield was improved by 5 % when using marker scores of component traits (GM2 and DH) together with yield in multiple regression. This procedure may provide accumulation of more favorable alleles during selection. © 2012 Springer-Verlag Berlin Heidelberg.
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
McIntyre, C. Lynne
Australia, Melbourne
Csiro Plant Industry
Mathews, Ky L.
Mexico, Texcoco
Centro Internacional de Mejoramiento de Maiz y Trigo
Jalal-Kamali, Mohammad Reza
Iran, Karaj
Seed and Plant Improvement Research Institute, Karaj
Mossad, Moussa
Egypt, Giza
Field Crops Research Institute Fcri
Feltaous, Yousef
Egypt, Giza
Field Crops Research Institute Fcri
Tahir, Izzat Sidahmed Ali
Sudan, Khartoum
Arc
Lebanon, Beirut
International Center for Agricultural Research in the Dry Areas Syria
Chatrath, Ravish
India, Karnal
Icar - Indian Institute of Wheat and Barley Research, Karnal
Ogbonnaya, F. C.
Lebanon, Beirut
International Center for Agricultural Research in the Dry Areas Syria
Baum, Michael
Lebanon, Beirut
International Center for Agricultural Research in the Dry Areas Syria
Statistics
Citations: 63
Authors: 11
Affiliations: 7
Identifiers
Doi:
10.1007/s00122-012-2030-4
ISSN:
00405752
Research Areas
Genetics And Genomics
Study Design
Cross Sectional Study
Study Approach
Quantitative
Study Locations
Multi-countries