Influence of Water Stress on Grain Yield Response to Recurrent Selection in Maize

Johnson, Sam; Geadelmann, J. L.

doi:10.2135/cropsci1989.0011183x002900030002x

Cited by 30 publications

(15 citation statements)

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“…It is concluded that the genetic expression differs under the two water regimens. This is consistent with results of other studies (Rebaut et al 1997;Li et al 2003) indicating that yield and drought tolerance are controlled by different sets of genes (Johnson and Geadelmann 1989;Atlin and Frey 1990;Li et al 2004). Differences in the additive and epistatic QTL between traits under water-stressed conditions indicate that the genetic expression also differs from trait to trait.…”

Section: Genetic Mechanism and Complexity Of Drought Tolerance Of Maisupporting

confidence: 92%

Quantitative Trait Loci Mapping of Maize Yield and Its Components Under Different Water Treatments at Flowering Time

Tang

Yan

et al. 2006

J Integrative Plant Biology

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Drought or water stress is a serious agronomic problem resulting in maize (Zea mays L.) yield loss throughout the world. Breeding hybrids with drought tolerance is one important approach for solving this problem. However, lower efficiency and a longer period of breeding hybrids are disadvantages of traditional breeding programs. It is generally recognized that applying molecular marker techniques to traditional breeding programs could improve the efficiency of the breeding of drought-tolerant maize. To provide useful information for use in studies of maize drought tolerance, the mapping and tagging of quantitative trait loci (QTL) for yield and its components were performed in the present study on the basis of the principle of a mixed linear model. Two hundred and twenty-one recombinant inbred lines (RIL) of Yuyu 22 were grown under both well-watered and water-stressed conditions. In the former treatment group, plants were well irrigated, whereas those in the latter treatment group were stressed at flowering time. Ten plants of each genotype were grown in a row that was 3.00 m × 0.67 m (length × width). The results show that a few of the QTL were the same (one additive QTL for ear length, two additive QTL and one pair of epistatic QTL for kernel number per row, one additive QTL for kernel weight per plant), whereas most of other QTL were different between the two different water treatment groups. It may be that genetic expression differs under the two different water conditions. Furthermore, differences in the additive and epistatic QTL among the traits under water-stressed conditions indicate that genetic expression also differs from trait to trait. Major and minor QTL were detected for the traits, except for kernel number per row, under water-stressed conditions. Thus, the genetic mechanism of drought tolerance in maize is complex because the additive and epistatic QTL exist at the same time and the major and minor QTL all contribute to phenotype under water-stressed conditions. In particular, epidemic QTL under water-stressed conditions suggest that it is important to investigate the drought tolerance of maize from a genetic viewpoint.

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Section: Genetic Mechanism and Complexity Of Drought Tolerance Of Maisupporting

confidence: 92%

Quantitative Trait Loci Mapping of Maize Yield and Its Components Under Different Water Treatments at Flowering Time

Tang

Yan

et al. 2006

J Integrative Plant Biology

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“…Therefore, within the normal range of selection intensity, no line possessed the best combination of favorable genes for high yield in both irrigated and drought-stressed environments . These results agree with findings of many researchers (Ceccarelli, 1987 ;Ehdaie et al ., 1988 ;Ceccarelii,1989 ;Atlin & Frey 1989), yet they contrast with others (Frey, 1964 ;Roy & Murty, 1970 ;Quisenberry et al ., 1980 ;Johnson & Geadelmann, 1989 ;Whitehead & Allen, 1990) .…”

Section: Resultsmentioning

confidence: 99%

“…Several researchers have concluded that selection under favorable conditions produces lines suitable in both stress and nonstress environments (Frey, 1964 ;Roy & Murty, 1970 ;Laing & Fischer, 1979 ;Quisenberry et al ., 1980 ;Johnson & Geadelmann, 1989 ;Whitehead & Allen, 1990) . On the other hand, others have concluded that yield improvement under high-stress conditions requires selection strictly under those conditions (Arboleda-Rivera & Compton, 1974 ;Ceccarelli, 1987 ;Ceccarelli, 1989 ;Atlin & Frey, 1989) .…”

Section: Introductionmentioning

confidence: 99%

Genetic analysis and selection for wheat yield in drought-stressed and irrigated environments

Uddin¹,

Carver

Clutter

1992

Euphytica

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Wheat (Triticum aestivum L.) cultivars grown in the southern Great Plains of the U .S .A. are exposed to a wide range of moisture conditions due to large fluctuations in the amount and frequency of rainfall . Yield stability under those conditions is therefore a desirable trait for wheat breeders . Our primary objective was to quantify various genetic parameters for grain production in drought-stressed and irrigated environments . We also attempted to predict and measure yield responses when selection is practiced in either droughtstressed or irrigated environments, or both . Seventy F2-derived lines from the cross, TAM W-101/Sturdy, were evaluated at Goodwell, OK, under irrigated and naturally drought-stressed conditions in 1987 and 1988 . Genetic variance and heritability estimates were higher in the irrigated environment than in the drought-stressed environment . The genetic correlation coefficient for yields in the two environments was 0.20 ± 0 .16, indicating that selection of widely adapted genotypes requires testing in both environments . Based on the genetic variance/covariance structure of this particular population, the linear index which maximized the combined expected gain in both environments was 0 .66Y, + 0 .34Y2, in which Y, and Y2 are yields in the irrigated and drought-stressed environments . This index is not expected to apply across all populations ; rather, it further supports the hypothesis that testing in either environment alone (drought stressed or irrigated) may not be most effective for increasing either mean productivity or yield under drought stress.

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“…Some studies have shown that GE interactions are common under stress conditions, such as drought, cold, or pest attack, and make breeding progress difficult (Pswarayi and Vivek, 2008; Rodríguez et al, 2007; Butrón et al, 2008). A breeding program focusing on performance under stress can increase responsiveness of the selected populations (Johnson and Geadelmann, 1989; Bänziger et al, 2006). Therefore, a precise definition of the environmental and GE stress factors affecting yield should increase the opportunities for future improvements of grain yield.…”

mentioning

confidence: 99%

Climatic and Genotypic Effects for Grain Yield in Maize under Stress Conditions

et al. 2010

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Influence of Water Stress on Grain Yield Response to Recurrent Selection in Maize

Cited by 30 publications

References 0 publications

Quantitative Trait Loci Mapping of Maize Yield and Its Components Under Different Water Treatments at Flowering Time

Quantitative Trait Loci Mapping of Maize Yield and Its Components Under Different Water Treatments at Flowering Time

Genetic analysis and selection for wheat yield in drought-stressed and irrigated environments

Climatic and Genotypic Effects for Grain Yield in Maize under Stress Conditions

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