Title
How can we improve crop genotypes to increase stress resilience and productivity in a future climate? A new crop screening method based on productivity and resistance to abiotic stress
Date Issued
01 October 2016
Access level
open access
Resource Type
journal article
Author(s)
International Maize and Wheat Improvement Centre
Publisher(s)
Oxford University Press
Abstract
The need to accelerate the selection of crop genotypes that are both resistant to and productive under abiotic stress is enhanced by global warming and the increase in demand for food by a growing world population. In this paper, we propose a new method for evaluation of wheat genotypes in terms of their resilience to stress and their production capacity. The method quantifies the components of a new index related to yield under abiotic stress based on previously developed stress indices, namely the stress susceptibility index, the stress tolerance index, the mean production index, the geometric mean production index, and the tolerance index, which were created originally to evaluate drought adaptation. The method, based on a scoring scale, offers simple and easy visualization and identification of resilient, productive and/or contrasting genotypes according to grain yield. This new selection method could help breeders and researchers by defining clear and strong criteria to identify genotypes with high resilience and high productivity and provide a clear visualization of contrasts in terms of grain yield production under stress. It is also expected that this methodology will reduce the time required for first selection and the number of first-selected genotypes for further evaluation by breeders and provide a basis for appropriate comparisons of genotypes that would help reveal the biology behind high stress productivity of crops.
Start page
5593
End page
5603
Volume
67
Issue
19
Language
English
OCDE Knowledge area
Ciencias de las plantas, BotĂ¡nica
Subjects
Scopus EID
2-s2.0-84992206979
PubMed ID
Source
Journal of Experimental Botany
ISSN of the container
00220957
Sources of information:
Directorio de ProducciĂ³n CientĂfica
Scopus