Relationship between phenotypic and genetic diversity of parental genotypes and the specific combining ability and heterosis effects in wheat (Triticum aestivum L.)

Krystkowiak, Karolina; Adamski, T.; Surma, M.; Kaczmarek, Z.

doi:10.1007/s10681-008-9761-y

Cited by 60 publications

(49 citation statements)

References 56 publications

(72 reference statements)

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“…Moreover, some of the results obtained from various researches are unclear with respect to the relationship between distance studies and hybrid performance (Krystkowiak et al, 2009;Crossa et al, 2010).…”

Section: Introductionmentioning

confidence: 99%

Relationships between four measures of genetic distance and breeding behavior in spring wheat

Benin

Matei²,

Oliveira³

et al. 2012

Genet. Mol. Res.

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ABSTRACT. We estimated the genetic distances among 10 spring wheat genotypes based on pedigree data, morphological traits and AFLP markers, used individually and combined with morphological traits, to find the best predictors of general-and specific-combining abilities among parental genotypes. Ten wheat parents were crossed in a diallel form, disregarding reciprocal hybrids, totaling 45 combinations. The F 1 hybrids, F 2 populations and parents were evaluated in the field in 2007. The experimental plots consisted of 20 plants for F 1 hybrids and 40 plants for parental and F 2 populations. All methods (pedigree data, AFLP markers and morphological traits, used individually and combined) were found to be useful for the assessment of genetic diversity. The significant coefficient correlations ranged from low (0.45) to moderate (0.67) between the distance measures and hybrid performance. There was significant agreement between the distance measures based on AFLP markers vs morphological traits + AFLP markers (r = 0.47) and between pedigree data vs morphological traits 2391+ AFLP markers (r = 0.43). The pedigree distance was positively associated with traits 100-kernel weight and grain yield per plant in F 1 (correlations of 0.67 and 0.62, respectively) and F 2 (correlations of 0.62 and 0.59, respectively) generations. These correlation values indicate that the genetic distance, based on pedigree data, could replace diallel crosses for the selection of parents with higher combining ability and with moderate reliability.

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Section: Introductionmentioning

confidence: 99%

Relationships between four measures of genetic distance and breeding behavior in spring wheat

Benin

Matei²,

Oliveira³

et al. 2012

Genet. Mol. Res.

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“…No entanto, há na literatura indícios de relação positiva entre os parâmetros de heterose e divergência genética. Em ao menos três trabalhos, com espécies de trigo (Krystkowiak et al, 2009), soja (Colombori Filho et al, 2010 e Brassica napus L. (Riaz et al, 2001), a divergência entre os genitores, com base em marcadores moleculares, apresentou correlação positiva com a expressão da heterose.…”

Section: Resultsunclassified

Divergência em QTLs e variância genética para teores de proteína e óleo em soja

Rodrigues

Arruda

Cruz

et al. 2015

Pesq. agropec. bras.

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Resumo -O objetivo deste trabalho foi avaliar a relação entre os parâmetros de divergência em regiões de QTLs e a variância genética em genótipos de soja, quanto aos teores de proteína e óleo nos grãos. Dois grupos de genótipos foram avaliados, em diferentes ambientes, quanto aos teores de proteína e óleo e genotipados com marcadores moleculares de regiões de QTLs. A partir de cada grupo, estabeleceram-se subgrupos por critérios pré-definidos e avaliou-se a relação entre os parâmetros, tendo-se comparado a divergência média e a variância genética entre os subgrupos. Os subgrupos foram definidos com base nos critérios de diferença em divergência média, homogeneidade e heterogeneidade nos subgrupos e proximidade em uma projeção tridimensional da matriz de distância. As percentagens de concordância entre maiores valores de divergência média e de variância genética para o total de subgrupos de cada grupo inicial foram de 72,5 e de 73,4%, respectivamente. Portanto, nestes genótipos, há relação positiva entre as estimativas de divergência em regiões de QTL e variância genética para os teores de proteína e de óleo dos grãos. As distâncias genéticas com base nos marcadores moleculares de regiões de QTLs são eficientes para a predição da variabilidade genética em genótipos de soja para os teores de proteína e de óleo dos grãos.Termos para indexação: Glycine max, distância genética, marcadores moleculares, variabilidade genética. Divergence on QTLs and genetic variance for protein and oil contents in soybeanAbstract -The objective of this work was to evaluate the relationship between the parameters of divergence on QTL regions and the genetic variance in soybean genotypes for protein and oil contents. Two groups of genotypes were evaluated for protein and oil contents in different environments, and genotyped with molecular markers of QTL regions. Subgroups were established by predefined criteria from each group, and the relationship between the parameters was evaluated by comparing mean divergence and genetic variance between the subgroups. The subgroups were defined based on the criteria of difference of mean divergence, homogeneity and heterogeneity in the subgroups, and proximity in a three-dimensional projection of the distance matrix. Percentage agreement between the greater values for mean divergence and genetic divergence for the subgroup total of each initial group was 72.5 and 73.4%, respectively. Therefore, there is a positive relationship between the estimates on QTL regions and genetic variance for protein and oil contents in grains in these genotypes. The genetic distances based on molecular markers of QTL regions are efficient to predict the genetic variability in soybean genotypes, for protein and oil contents.

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“…Therefore, breeders look at grain yield performance of segregating populations. Breeders use mid-variety vigor and high-variety vigor to estimate grain yield performance from segregating populations (Yildirim 2005;Krystkowiak et al 2009).…”

Section: Introductionmentioning

confidence: 99%

The population vigors of diallel F4 offsprings of six bread wheat genotypes for grain yield under irrigated and rain-fed conditions

ÇAKMAK¹

2014

Tarım Bilimleri Dergisi

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Grain yield estimate from early segregating populations is an interesting feature of today's wheat breeding programs, and F 1 populations are generally recommended as the most suitable population by researchers. In the present study, we evaluated the population vigor of diallel ÖZETErken dönemde açılan populasyonlardan verim tahmini yapmak günümüz ıslah programlarında ilgi çekici bir özellik olup, genellikle F 1 populasyonlarının bu amaçla kullanımı araştırmacılar tarafından önerilir. Sunulan bu çalışmada, yağmura dayalı (RF) ve sulu şartlar altında (IR) altı ekmeklik buğdayın (Sultan, Bezostaya, Süzen Harmankaya, Altay

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Relationship between phenotypic and genetic diversity of parental genotypes and the specific combining ability and heterosis effects in wheat (Triticum aestivum L.)

Cited by 60 publications

References 56 publications

Relationships between four measures of genetic distance and breeding behavior in spring wheat

Relationships between four measures of genetic distance and breeding behavior in spring wheat

Divergência em QTLs e variância genética para teores de proteína e óleo em soja

The population vigors of diallel F4 offsprings of six bread wheat genotypes for grain yield under irrigated and rain-fed conditions

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