Conventional Selection versus Methods that Use Genotype × Environment Interaction in Sweet Corn Trials

Bachireddy, V.R.; Payne, Roosevelt; Chin, Kit Ling; Kang, M. S.

doi:10.21273/hortsci.27.5.436

Cited by 13 publications

(13 citation statements)

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“…Only recently has attention been focussed on usefully incorporating GE interaction into genotype selection in short-term trials . Despite availability of and comparisons among several methods designed to combine yield and stability into a single selection criterion (Kang et al, 1990;Bachireddy et al, 1992), practical integration of stability of performance with yield has not been achieved.…”

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confidence: 99%

“…Understanding that the main purpose of crop performance trials is to estimate or predict, with past performance data, genotype performance in future years, especially on growers' farms, may clarify this misconception. Especially when a crossover type of GE interaction [i.e., one that causes genotype rank changes; (Baker, 1990)] is present, mean yield of genotypes selected via a method that combines yield and stability would usually be lower than that of genotypes selected on the basis of yield alone Bachireddy et al, 1992). However, the lower yield relates to past performance, and it would not necessarily translate into reduced yield on growers' farms.…”

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Simultaneous Selection for Yield and Stability in Crop Performance Trials: Consequences for Growers

1993

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Simultaneous Selection for Yield and Stability in Crop Performance Trials: Consequences for Growers

1993

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“…Efforts have been made to combine yield and performance stability into a single selection criterion (Kang et al ., 1991 ;Bachireddy et al ., 1992) . Benefit to farmers of emphasizing stability of performance during the selection process has been demonstrated (Kang, 1993) .…”

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Genotype selection via a new yield-stability statistic in maize yield trials

Magari

Kang

1993

Euphytica

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Genotype x environment (GE) interaction complicates selection of superior genotypes across environments .The main objective of this study was to select maize (Zea mays L.) genotypes via a new yield-stability (YS ;) statistic in yield trials conducted in Albania. Another objective was to estimate contribution of environmental index (X.i -X , where X i is mean of all genotypes in the jth environment and X is mean of all genotypes across all environments), minimum temperature, maximum temperature, preseason rainfall, rainfall during the growing season, and relative humidity to GE interaction by determining heterogeneity (nonadditivity) attributable to each of these environmental factors . In five of eight trials, heterogeneity due to environmental index was significant. Heterogeneity due to the other environmental factors was not significant in any trial . A comparison of a; 2 (stability-variance statistic derived from total GE interaction) and s, 2 (stability-variance statistic derived from residual GE interaction following removal of heterogeneity due to a covariate) helped identify genotypes that performed stably or unstably because of a linear effect of environmental index . In three of the five trials showing significant heterogeneity due to environmental index, the YS ; statistic selected a reduced number of unstable genotypes as compared with selection based solely on yield . However, the circumstances or conditions under which YS ; and solely yield-based method select the same or different genotypes are not fully understood .

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“…Whereas, variance due to residual (pooled deviation) for all characters was significant except both fiber weight/plant and fruiting zone length, indicated that genotypes differed with respect to their stability suggesting that prediction would be difficult, which means that mean performance alone (mean yield) would not be appropriate. In such situation, methods that combine yield and stability of performance are useful (Bachireddy et al, 1992).…”

Section: Variabilitymentioning

confidence: 99%

“…The yield level, yield stability and genetic variance of the base populations would thus determine the success of any selection programs (Kofoid et al, 1978). Efforts have been made to combine yield and performance stability into a single selection criterion (Kang et al, 1991 andBachireddy et al, 1992). Benefit to farmers of emphasizing stability of performance during the selection process has been demonstrated (Kang, 1993 andMagari, 1995).…”

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confidence: 99%

Simultaneous Selection for High Yielding and Stability of Some Economic Kenaf Characters

Kaied

El-Refaie

Omar

2012

Journal of Plant Production

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The materials used for the present study consisted of fourteen kenaf genotypes (G) which were evaluated over six environments (three at Ismailia Governorate, two at Giza Governorate and one at El-Beheira Governorate) through three successive seasons (2009 to 2011). in Egypt. The analysis of variance revealed highly significant differences among genotypes, environments and G x E interaction for all studied traits, indicating a wide range of variation among genotypes, environments and these genotypes exhibited differential response to environmental conditions. The significant variance due to residual for all characters indicated that genotypes differed with respect to their stability suggesting that prediction would be difficult, which means that mean performance alone would not be appropriate. Interaction component of variance (σ 2 ge) was less than the genotypic variance (σ 2 g) for all characters. This means that genotypes differ in their genetic potential for these traits. The observed narrow range between phenotypic and genotypic coefficients of variability with high heritability in broad since for fiber percentage. Also, fiber weight per plant, technical stem length and plant height showed similar results, indicating possibility of using these three yield traits in selection criteria with giving more weight for fiber weight per plant and technical stem length for improving green stalk yield per plant in turn fiber yield. The criterion, yield stability (YSi) statistic indicated that S.105/2 and S.113 were proved to be superior in yield and stability for all characters studied as well as three genotypes, S.96/20, Giza3 and S.8 were stable for most characters studied. Therefore, the two genotypes (S.105/2 and S.113) maintained mean performance advantage across nearly all the environments sampled by maintaining high level for the above-mentioned traits and they are recommended to be released as commercial stable high yielding cultivars and/or to be incorporated in kenaf breeding program for producing stable high yielding lines. Phenotypic correlation coefficients among green stalk weight with other related characters of kenaf, indicated that, plant height, technical stem length, and fiber percentage are the major components contributing to green stalk weight per plant. Therefore, selection for these traits will improve green stalk weight per plant and in turn fiber yield in kenaf.

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Conventional Selection versus Methods that Use Genotype × Environment Interaction in Sweet Corn Trials

Cited by 13 publications

References 2 publications

Simultaneous Selection for Yield and Stability in Crop Performance Trials: Consequences for Growers

Simultaneous Selection for Yield and Stability in Crop Performance Trials: Consequences for Growers

Genotype selection via a new yield-stability statistic in maize yield trials

Simultaneous Selection for High Yielding and Stability of Some Economic Kenaf Characters

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