capacidade de combinação de linhagens elite de pimentão (capsicum annuum l.) combining ability among lines of sweet pepper (capsicum annuum l.)

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ID: 214372
2008
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Abstract
Conduziu-se este trabalho, com o objetivo de avaliar a capacidade de combinação de linhagens elite de pimentão (Capisicum annuum L.), identificar combinações híbridas superiores quanto à qualidade de frutos, e inferir sobre os modos de ação gênica envolvidos na expressão dos caracteres relacionados à qualidade dos frutos. Para isto, foram realizados cruzamentos dialélicos para obtenção de híbridos, sendo analisados segundo o esquema dialélico parcial tipo North Carolina II, estimando-se a capacidade geral (CGC) de cada genitor dentro de cada grupo, bem como as capacidades específicas (CEC) de combinação para cada combinação de genitores. Os híbridos experimentais apresentaram heterose para diâmetro de fruto e profundidade de inserção de pedúnculo. A característica profundidade de inserção do pedúnculo é condicionada, predominantemente, por alelos recessivos. Os melhores híbridos, com perspectivas para uso comercial foram F1 (L-3436 x L-004), F1 (L-3513 x L-004) e F1 (L-3509 x L-004). Foram obtidos valores positivos de heterose padrão variando de 1,47 a 30,04% para diâmetro de fruto, de 2,57 a 83,71% para profundidade de inserção do pedúnculo, em relação à cultivar híbrida F1 Magali-R.
The work had the aim to evaluating the combining ability among sweet pepper breeding lines, identify superior hybrids for fruit quality, and to infer on the mode of gene action involved in the expression fruit quality. North Carolina-II scheme partial diallel crosses were obtained, to estimate general combining abilities (GCA) of parental lines and specific combining abilities (SCA) of parental combinations. There was evidence for heterosis among experimental hybrids for fruit diameter and insertion depth of the peduncle. Peduncle insertion depth is conditioned, predominantly, by recessive alleles. Experimental hybrids with commercial potential were F1 (L-3436 x L-004), F1 (L-3513 x L-004) and F1 (L-3509 x L-004). Heterosis values relative to the standard cultivar Magali-R-F1 ranged from 1.47% to 30.04% for fruit diameter and 2.57% to 83.71% for insertion depth of the peduncle.
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Authors ;Márcia Lídia Gomide;Wilson Roberto Maluf;Luiz Antonio Augusto Gomes
Journal information and software technology
Year 2008
DOI
10.1590/S1413-70542008000300006
URL
http://www.scielo.br/scielo.php?script=sci_arttext&pid=S1413-70542008000300006
Keywords
heterosis hybrids capsicum annuum

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