CIMMYT approaches to breeding for stress tolerance
1988
Edmeades, G. (CIMMYT, Mexico, DF (Mexico). Physiology and Agronomy)
In tropical maize some major stresses are radiation, moisture, fertility, temperature, and root zone. There are two general approaches to breeding for stress tolerance: yield selection under stress, and the ideotype approach (combines the appropriate traits to increase yield and yield stability under specific stress situations). The following steps should be considered when breeding for stress tolerance: assessment of the type of stress likely to occur; selection of sites where the specific stress will occur naturally; establishment of appropriate ideotype; examination for genetic variability of selected traits; field selection under stress and normal conditions; recombination and advancement of superior genotypes
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