Diallel analysis in white oat cultivars subjected to water stress

Ribeiro, Guilherme; Silveira, Gustavo da; Crestani, Maraisa; Nornberg, Rafael; Luche, Henrique de Souza; Mezzalira, Itamara; Carvalho, Fernando Irajâ Félix de; Oliveira, Antônio Costa de

doi:10.1590/s1984-70332011000200004

Cited by 7 publications

(6 citation statements)

References 13 publications

(12 reference statements)

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“…Antes limitado ao melhoramento de espécies alógamas, esse método vem sendo utilizado em espécies autógamas, como arroz (Torres & Geraldi, 2007;Pereira et al, 2008), feijão (Gonçalves-Vidigal et al, 2008;Trindade et al, 2011), aveia (Ribeiro et al, 2011) e trigo Valério et al, 2009). Apesar do uso da capacidade de combinação como critério para seleção de cruzamentos em trigo, há pouca informação sobre o uso e a repetibilidade de suas estimativas obtidas em gerações com diferentes graus de endogamia.…”

Section: Introductionunclassified

Análise dialélica parcial em gerações avançadas para seleção de populações segregantes de trigo

Pimentel

Souza

Carneiro

et al. 2013

Pesq. agropec. bras.

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Resumo -O objetivo deste trabalho foi estimar, em gerações avançadas, os efeitos da capacidade geral e específica de combinação de genitores de trigo, bem como selecionar populações segregantes superiores. Doze genitores e suas 36 populações nas gerações F 2 e F 3 , obtidas em arranjo de dialelo parcial, foram avaliados quanto à produtividade de grãos. Utilizou-se o delineamento em látice 7x7, com duas repetições, mais um tratamento para completar o látice. O efeito de capacidade geral de combinação foi significativo, nas duas gerações. Observou-se alta correlação (0,83) dos efeitos de capacidade geral de combinação entre gerações, mas inexpressiva influência dos efeitos de gerações e de anos na classificação dos cruzamentos. As populações provenientes do cruzamento entre os genitores BRS 254, BRS 264 e IAC 364 (Tucuruí III) e os genitores MGS 1 Aliança, VI 98053 e UFVT 1 Pioneiro apresentam maior potencial para obtenção de linhagens superiores, quanto à produtividade de grãos. O uso da análise dialélica parcial em gerações avançadas é promissor para programas de melhoramento de trigo por hibridação.Termos para indexação: Triticum aestivum, capacidade de combinação, melhoramento de plantas, predição do potencial genético. Partial diallel analysis in advanced generations for selection of wheat segregating populationsAbstract -The objective of this work was to estimate the effects of general and specific combining ability of wheat parental lines in advanced generations, and to select superior segregating populations. Twelve parental lines and their 36 populations in F 2 and F 3 generations, obtained in a partial diallel arrangement, were evaluated for grain yield. The experimental design used was a 7x7 simple lattice with two replicates, plus a treatment to complete the lattice. The effect of general combining ability was significant in both generations. There was high correlation (0.83) of the effects of general combining ability between generations, but inexpressive influence of the effects of generations and years were observed on the classification of crossings. The populations derived from the crossings between the parental lines BRS 254, BRS 264, and IAC 364 (Tucuruí III) and the parental lines MGS 1 Aliança, VI 98053, and UFVT 1 Pioneiro show the greatest potential for obtaining superior lines for grain yield. The use of the partial diallel analysis in advanced generations is promising for wheat breeding programs through hybridization.

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Section: Introductionunclassified

Análise dialélica parcial em gerações avançadas para seleção de populações segregantes de trigo

Pimentel

Souza

Carneiro

et al. 2013

Pesq. agropec. bras.

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“…Additive gene effects are easily passed to progenies and continue with the advancement of generations until they reach homozygosity, determining narrow sense heritability. This is an important parameter in self-pollinating species such as wheat (Ribeiro et al, 2011). The genotypes that presented lower SG and high WFN were considered high dormancy seeds and PHS tolerant genotypes ( Table 1).…”

Section: Discussionmentioning

confidence: 99%

“…The analysis of combining ability allows one to evaluate a number of F 1 hybrids, and based on combining ability of the parents and the average performance of F 1 hybrids, to concentrate efforts on the most promising combinations (Ribeiro et al, 2011). Some hybrid combinations can show strong effect of organellar genes in the two traits related to PHS tolerance (Yücel et al, 2011).…”

Section: --------------------------------------Grain Yield (G) ------mentioning

confidence: 99%

The challenge of finding high grain yield and pre-harvest sprouting tolerant genotypes in Brazilian wheat germplasm

Nornberg¹,

Luche²,

Silva³

et al. 2016

Aust J Crop Sci

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Pre-harvest sprouting (PHS) harms the quality of wheat by converting starch into sugar and decreasing the flour quality. Therefore, improving wheat genotypes for PHS is critical for Brazilian wheat breeding programs. The goals of this study were to evaluate the combining ability and heterosis of Brazilian wheat genotypes, aiming to increase genetic gains and to identify promising combinations capable of generating superior genotypes for grain yield and pre-harvest sprouting tolerance. The work was conducted in 2011 in Capão do Leão, RS, Brazil, under an experimental design of randomized blocks with three repetitions. The traits of eight parents and 56 wheat hybrids linked to pre-harvest sprouting and grain yield were evaluated. The presence of additive and nonadditive gene effects and maternal effects controlling pre-harvest sprouting tolerance in Brazilian wheats were observed in some combinations. The cultivars BRS 194, Frontana and Quartzo when used as parents contributed with additive and non-additive gene effects for pre-harvest sprouting tolerance in wheat. The parental Quartzo contributes with genes of additive and non-additive effects in the increase of grain yield. Combinations which include BRS 194, Frontana and Quartzo show effective ability of recovering high yield genotypes with pre-harvest sprouting tolerance.

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“…Oat breeding programs depend on selecting good parents to develop new varieties that carry genetic factors that improve grain yield and some other beneficial traits. (Ribeiro et al, 2011).…”

Section: Introductionmentioning

confidence: 99%

Combining Ability and Heterosis for Fodder Yield and Other Associated Traits in Oat (Avena sativa L.) القدرة على التآلف وقوة الهجین لمحصول العلف والصفات المرتبطة الأخرى فی محصول الشوفان

Al-Juhaishi

Okaz

El-Hennawy

et al. 2020

Journal of Plant Production

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Combining ability and heterosis studies were performed on half diallel mating. The basic material for the present study consisted of six diverse genotypes of oats viz: Alguda, Anatolia, Kangaroo, ICARDA tall, Bihuth and Shifa'.15 F1 hybrids and their parents were grown in randomized complete block design with three replications. Observations were recorded on six quantitative traits. The analysis of variance revealed significant differences among the parents and their crosses for all the studied traits. The estimates of variance due to non-additive gene action (σ 2 D) was much higher than the corresponding additive genetic variance (σ 2 A) for all the traits under evaluation.Values of GCA effects revealed that ICARDA tall was found to be the best general combiner for biological yield amongst all the parents. It was also found to have significant positive GCA values for other traits. On the basis of significant SCA effects, hybrids ICARDA tall x Bihuth and Alguda x Bihuth recorded highest SCA effects for biological yield, also showed positive and significant SCA values for other traits. The F1 hybrids were showed the best specific combinations viz; Bihuth x shifa' for days to 50% heading and days to 75% maturity, Anatolia x Kangaroo for plant height at maturity,Anatolia x Bihuth for numbers of tillers. Highest significant and positive heterosis for biological yield was shown by F1 hybrid Alguda x Bihuth followed by ICARDA tall x Bihuth. These crosses combinations also exhibited highly values with positive and significant heterobeltiosis for two traits viz; plant height at maturity and growth rate.

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Diallel analysis in white oat cultivars subjected to water stress

Abstract: 125Diallel analysis in white oat cultivars subjetecd to water stress

Cited by 7 publications

References 13 publications

Análise dialélica parcial em gerações avançadas para seleção de populações segregantes de trigo

Análise dialélica parcial em gerações avançadas para seleção de populações segregantes de trigo

The challenge of finding high grain yield and pre-harvest sprouting tolerant genotypes in Brazilian wheat germplasm

Combining Ability and Heterosis for Fodder Yield and Other Associated Traits in Oat (Avena sativa L.) القدرة على التآلف وقوة الهجین لمحصول العلف والصفات المرتبطة الأخرى فی محصول الشوفان

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