1999
DOI: 10.1590/s0102-05361999000200005
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Capacidade de combinação para oito caracteres agronômicos em cultivares de feijão-de-vagem de crescimento determinado

Abstract: Combining ability of eight agronomic characters in bush snap bean cultivars.In order to study the effects of hybridisation on bush snap bean genotypes, a test was conducted at PESAGRO-RIO. Four bush snap bean cultivars, Alessa, Andra, Cota and Cascade were used as parents and crossed in a diallel mating design without reciprocals. Parental cultivars and F 1 hybrids were planted under field conditions and eight agronomic characters were evaluated. Significant effects for general combining ability (GCA) were ide… Show more

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Cited by 11 publications
(5 citation statements)
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“…The significant additive × dominance (j) gene action found for plant height under non-stress condition in both crosses is in agreement with the reports of Vaid et al (1985) and Melaku (1993) who found both additive and non-additive (dominance and epistasis) gene actions for the same trait. Dominance and additive × additive (in Roba-1 × SER-16 cross) and only dominance (in Melka-Dima × SAB-623 cross) gene actions for pod length under both watering regimes appear to slightly deviate from the results obtained by Arunga et al (2010) and Carvalho et al (1999) where epistatic effects were involved in addition to dominance in genetic control of pod length in snap bean. The complex gene actions (involvement of both additive and non-additive) for stomatal conductance in both crosses and under the two soil moisture regimes are comparable with the expression of the trait in other crops such as wheat (Rebetzke et al, 2003).…”
Section: Discussioncontrasting
confidence: 66%
“…The significant additive × dominance (j) gene action found for plant height under non-stress condition in both crosses is in agreement with the reports of Vaid et al (1985) and Melaku (1993) who found both additive and non-additive (dominance and epistasis) gene actions for the same trait. Dominance and additive × additive (in Roba-1 × SER-16 cross) and only dominance (in Melka-Dima × SAB-623 cross) gene actions for pod length under both watering regimes appear to slightly deviate from the results obtained by Arunga et al (2010) and Carvalho et al (1999) where epistatic effects were involved in addition to dominance in genetic control of pod length in snap bean. The complex gene actions (involvement of both additive and non-additive) for stomatal conductance in both crosses and under the two soil moisture regimes are comparable with the expression of the trait in other crops such as wheat (Rebetzke et al, 2003).…”
Section: Discussioncontrasting
confidence: 66%
“…A existência de efeitos gênicos aditivos para a característica avaliada indica a possibilidade de obtenção de novas cultivares a partir de cruzamentos com os genitores testados (RAMALHO et al, 1993). Dessa forma, os genitores com valores mais elevados de CGC poderão ser selecionados para compor programas de melhoramento genético, no qual o objetivo é a seleção de linhagens derivadas de populações segregantes a partir de cruzamentos com os parentais testados (CARVALHO et al, 1999). Uma vez que se trata de resistência, os genótipos que apresentam CGC negativa são potencialmente superiores quanto à sua contribuição em programas de melhoramento.…”
Section: Resultsunclassified
“…Isto significa que se pode optar pelos resultados da análise de variância conjunta, ou seja, discutir os experimentos conjuntamente. Estes resultados estão de acordo com os encontrados por Carvalho et al (1999) Analisando conjuntamente os dados, verificase que houve efeito significativo de genótipo, existe diferença significativa detectada pelo teste F, para o teor de fibras nas vagens entre os acessos avaliados. A interação genótipo x local (ambiente) não foi significativa indicando a estabilidade desta característica.…”
Section: Resultsunclassified