Breeding crop varieties for stress environments

Blum, A.; Jordan, W. R.

doi:10.1080/07352688509382196

Cited by 193 publications

(131 citation statements)

References 239 publications

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“…The salt-tolerant plants could be selected at any stage, if they have a consistent pattern of salt tolerance at all growth stages. However, it becomes more difficult for otherwise situation in which the selection is made only at some particular growth stage (Blum, 1985). The selected okra genotypes in this study showed consistency in their tolerance, but no single accession/genotype was found to be consistently superior across the four growth stages.…”

Section: Performance Of Okra Genotypes Under Saline Conditions Duringmentioning

confidence: 86%

Comprehensive screening and selection of okra (Abelmoschus esculentus) germplasm for salinity tolerance at the seedling stage and during plant ontogeny

Haq¹,

Khan²,

Khan³

et al. 2012

J. Zhejiang Univ. Sci. B

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Section: Performance Of Okra Genotypes Under Saline Conditions Duringmentioning

confidence: 86%

Comprehensive screening and selection of okra (Abelmoschus esculentus) germplasm for salinity tolerance at the seedling stage and during plant ontogeny

Haq¹,

Khan²,

Khan³

et al. 2012

J. Zhejiang Univ. Sci. B

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“…The overriding requirement in selection work hinges on the ease and speed with which the tests can be performed (Aniol, 1991;Blum, 1984). The hematoxylin component of the dualphase procedure is quick and easy to apply.…”

Section: Prognosismentioning

confidence: 99%

The use of hematoxylin in screening perennial ryegrass (Lolium perenne) for aluminium tolerance

Bennet¹

1995

South African Journal of Plant and Soil

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“…Considering the grain yield over the four environments, the heritability was only 6 %. In literature, selection mainly for grain yield under drought stress conditions is difficult due to its low heritability resulting from variations in the intensity of the stress through the field (Blum, 1988;Saba et al, 2001). Thus, the improvement of yield under stress must combine a reasonably high yield potential with specific factors which would buffer against a severe yield reduction under stress (Chandler and Singh, 2008).…”

Section: Grain Yieldmentioning

confidence: 99%

Efficiency of drought tolerance indices under different stress severities for bread wheat selection

Bennani¹,

Nsarellah²,

Jlibene³

et al. 2017

Aust J Crop Sci

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Drought is a world-wide spread problem adversely affecting bread wheat production in rainfed agro-ecosystems. Development and identification of efficient selection criteria for developing drought tolerant wheat varieties with stable and high yield potential is of paramount importance. This study was carried out to evaluate 24 indices for selecting the best high yielding and drought tolerant cultivars, among 40 bread wheat genotypes, under four levels of stress intensities: no stress, mild (0.25, 0.35) and severe (0.57). The mean productivity (MP), modified stress tolerance index (MSTIk), superiority index (Pi), mean relative performance (MRP), relative efficiency index (REI), geometric mean productivity (GMP), stress tolerance index (STI), harmonic mean (HARM) and relative decrease in yield (RDY) showed a high power of discrimination among genotypes, and expressed significant correlations with yields under both stress and non-stressed conditions at all stress intensities. This group of indices was capable to select the highest mean yield associated with the least mean variance at 20 % selection pressure. However, as the stress intensity became greater (>35 %), the efficiency of these indices decreased, especially at high stress intensity (57%), where only Pi and MP were still able to target the highest performances. MRP, REI, GMP, RDY and STI can be used interchangeably. Based on GGE analysis, the best performing genotypes were AUS30355, followed by Gladius, Amir-2 and AUS30354 that showed high yield and stability across all the environments. These genotypes are recommended for direct release and/or for use as parents in the breeding programs.

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Breeding crop varieties for stress environments

Cited by 193 publications

References 239 publications

Comprehensive screening and selection of okra (Abelmoschus esculentus) germplasm for salinity tolerance at the seedling stage and during plant ontogeny

Comprehensive screening and selection of okra (Abelmoschus esculentus) germplasm for salinity tolerance at the seedling stage and during plant ontogeny

The use of hematoxylin in screening perennial ryegrass (Lolium perenne) for aluminium tolerance

Efficiency of drought tolerance indices under different stress severities for bread wheat selection

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