Herança Da Tolerância Ao Alumínio Em Trigo

Camargo, Carlos Eduardo de Oliveira; Filho, Antônio Wilson Penteado Ferreira; Felício, João Carlos

doi:10.1590/s0103-90161999000200024

Cited by 3 publications

(2 citation statements)

References 7 publications

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“…The crosses between tolerant x sensitive parents (F 1 ) would be Aa (Tolerant) and the F 2 's would be the segregation 1/4 AA (tolerant), 2/4 Aa (tolerant) and 1/4 aa (sensitive). The RC 1 F 1 would have the segregation 1/2 AA (tolerant) and 1/2 Aa (tolerant) and the RC 2 F 1 would present segregation 1/2 Aa (tolerant) and 1/2 aa (sensitive) combining the tolerance inheritance to Al 3+ in common wheat (Camargo et al, 1999) and durum wheat (Del Guercio and Camargo, 2011).…”

Section: Resultsmentioning

confidence: 99%

“…Because this is extremely important character, chiefly to the winter cereal, the Al 3+ tolerance has presented simple inheritance determined by a dominant gene in bread wheat (Camargo et al, 1999), in durum wheat (Del Guercio and Camargo, 2011) and oat (Sánchez Chacón et al, 2000). However some studies show quantitative inheritance in rice (Ferreira et al, 1997) and wheat (Aniol, 1990).…”

Section: Introductionmentioning

confidence: 99%

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Genetic variability and inheritance to aluminum tolerance in nutrient solution in triticale

Silva¹,

Paterniani²,

Camargo³

2014

Bragantia

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Triticale has shown different behavior to aluminum toxicity (A1 3+) when applied nutrient solution. This study had the objective of evaluating 19 triticale lines inserted at International Maize and Wheat Improvement Center (CIMMYT), IAC-5 cultivar and two control cultivars of wheat in the presence of 0, 3, 6, 9, 12 and 15 mg L -1 of Al 3+. Afterwards, four genotypes being two tolerant and two sensitive were chosen to obtain the F 1 's, F 2 's, RC 1 's and RC 2 's generations, in all possible crossing. The seedlings were submitted to 6 mg L -1 of Al 3+ and analyzed later on (tolerant and sensitive) by the chi-square method. The root growth was also obtained to estimate the genetic parameters involved in the character control. The trials were carried out in laboratories, in nutritive solution. The genotypes were tolerant to 15 mg L -1 of Al 3+, exception the line 14 (P 3 ), sensitive to 3 mg L -1 of Al 3+ and the line 13, 17 and the cultivar IAC-5 (P 4 ), sensitive to 6 mg L . It was concluded that the inheritance to tolerance to aluminum toxicity is dominant and governed by a pair of alleles. The genetic parameters involved in the root growth control in solution containing 6 mg L -1 of Al 3+ also revealed simple inheritance, suggesting a selection in the first segregating generations.Key words: X triticosecale Wittmack, genotypes, genetic inheritance and genetic parameters.Variabilidade genética e herança da tolerância ao alumínio em solução nutritiva em triticale . Posteriormente, foram escolhidos quatro genótipos, dois tolerantes e dois sensíveis, para obtenção das gerações F 1 's, F 2 's, RC 1 's e RC 2 's. As plântulas foram submetidas a 6 mg L -1 de Al 3+ e posteriormente analisadas (tolerantes e sensíveis) pelo teste de qui-quadrado. O comprimento da raiz também foi obtido, para estimarem-se os parâmetros genéticos envolvidos no controle do caráter. Os experimentos foram conduzidos em laboratório, empregando-se solução nutritiva. Os genótipos avaliados, com exceção do 14 (P 3 ), sensível a 3 mg L -1 de Al 3+, do 13, do 17 e da cultivar IAC-5 (P 4 ), sensíveis a 6 mg, da linhagem 15, com sensibilidade a 12 mg, e das linhagens 16 e 18, sensíveis a 15 mg, foram tolerantes a 15 mg L -1 de Al 3+. O estudo da herança da tolerância à toxicidade apontou que o P 1 e P 2 , tolerantes ao alumínio, diferiram do P 3 e P 4 , sensíveis, por um par de alelos dominantes. Os parâmetros genéticos envolvidos no controle do comprimento da raiz em solução contendo 6 mg L -1 de Al 3+ também revelaram herança simples, sugerindo seleção nas primeiras gerações segregantes.Palavras-chave: X triticosecale Wittmack, genótipos, herança genética e parâmetros genéticos.

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Section: Resultsmentioning

confidence: 99%

Section: Introductionmentioning

confidence: 99%

Genetic variability and inheritance to aluminum tolerance in nutrient solution in triticale

Silva¹,

Paterniani²,

Camargo³

2014

Bragantia

Self Cite

View full text Add to dashboard Cite

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Cytomolecular characterization of cultivars and landraces of wheat tolerant and sensitive to aluminum toxicity

Oliveira

Pinto-Maglio

2017

Bragantia

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Herança da tolerância à toxicidade de alumínio em trigo duro

Guercio

Camargo²

2011

Bragantia

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ResumoO trigo duro (Triticum durum Desf.), também conhecido como "trigo para macarrão", caracteriza-se pela farinha amarelada (sêmola) adequada para o preparo de massas. No Brasil ainda não ocorre seu cultivo extensivo em decorrência, principalmente, de problemas com sua adaptação aos solos ácidos, com níveis tóxicos de alumínio. Visando estimar a herança da tolerân-cia à toxicidade de alumínio efetuaram-se cruzamentos entre o genótipo de trigo duro tolerante, P33 e o sensível, IAC-1003 para a obtenção do híbrido em geração F 1 e a seguir das gerações F 2 , F 3 , RC 1 F 1 , RC 2 F 1 , RC 1 F 2 e RC 2 F 2 . Todos os genótipos foram testados em soluções nutritivas e a tolerância à toxicidade de alumínio foi medida pela capacidade de crescimento da raiz primária central em solução nutritiva completa, após tratamento de 48 horas em solução contendo 2 mg L -1 de Al 3+ . O genótipo P33 diferiu do IAC-1003 por um par de alelos dominantes para a tolerância à presença dessa concentração de alumínio nas soluções nutritivas e pode ser usado como fonte de tolerância ao alumínio em programas de melhoramento de trigo duro.Palavras-chave: Triticum durum Desf., genes dominantes, solos ácidos, melhoramento genético. Inheritance of aluminum toxicity in durum wheatAbstract Durum wheat (Triticum durum Desf.), also known as "pasta wheat", is characterized to produce yellow flour (semolina) adequate for pasta elaboration. In Brazil, its extensive cultivation is limited by the low crop adaptability to acid soils, with toxic aluminum levels. Aiming to estimate the inheritance of the aluminum toxicity tolerance, crosses were made between tolerant durum wheat genotype P33 and the sensitive IAC-1003 to obtain the hybrid in F 1 generation and subsequent generations F 2 , F 3 , BC 1 F 1 , BC 2 F 1 , BC 1 F 2 and BC 2 F 2 . All genotypes were tested in nutrient solutions and the aluminum toxicity tolerance was measured by the growth capacity of the primary central root after 48 hours of treatment with 2 mg L -1 of aluminum in nutrient solution. The genotype P33 has differed from IAC-1003 by one pair of dominant alleles for the tolerance at the presence of this aluminum concentration in the nutrient solution and it could be used as source of aluminum tolerance in durum wheat breeding programs.

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Herança Da Tolerância Ao Alumínio Em Trigo

Cited by 3 publications

References 7 publications

Genetic variability and inheritance to aluminum tolerance in nutrient solution in triticale

Genetic variability and inheritance to aluminum tolerance in nutrient solution in triticale

Cytomolecular characterization of cultivars and landraces of wheat tolerant and sensitive to aluminum toxicity

Herança da tolerância à toxicidade de alumínio em trigo duro

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