Epistatic effects on grain yield of soybean [Glycine max (L.) Merrill]
Studies addressing the estimation of genetic parameters in soybean have not emphasized the epistatic effects. The purpose of this study was to estimate the significance of these effects on soybean grain yield, based on the Modified Triple Test Cross design. Thirty-two inbred lines derived from a cross between two contrasting lines were used, which were crossed with two testers (L1 and L2). The experiments were carried out at two locations, in 10 x 10 triple lattice designs with 9 replications, containing 32 lines (Pi ), 64 crosses (32 Pi x L1 and 32 Pi x L2 ) and controls. The variation between ( ͞L1i + ͞L2i - ͞Pi ) revealed the presence of epistasis, as well as an interaction of epistasis x environment. Since the predominant component of epistasis in autogamous species is additive x additive (i type), we suggest postponing the selection for grain yield to later generations of inbreeding in order to exploit the beneficial effects of additive x additive epistasis.
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Crop Breeding and Applied Biotechnology
2012
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oai:scielo:S1984-703320120004000012013-04-10Epistatic effects on grain yield of soybean [Glycine max (L.) Merrill]Barona,Marco Antonio AcevedoColombari Filho,José ManoelSantos,Vanderlei da SilvaGeraldi,Isaias Olívio Gene action modified triple test cross epistasis × environment interaction Studies addressing the estimation of genetic parameters in soybean have not emphasized the epistatic effects. The purpose of this study was to estimate the significance of these effects on soybean grain yield, based on the Modified Triple Test Cross design. Thirty-two inbred lines derived from a cross between two contrasting lines were used, which were crossed with two testers (L1 and L2). The experiments were carried out at two locations, in 10 x 10 triple lattice designs with 9 replications, containing 32 lines (Pi ), 64 crosses (32 Pi x L1 and 32 Pi x L2 ) and controls. The variation between ( ͞L1i + ͞L2i - ͞Pi ) revealed the presence of epistasis, as well as an interaction of epistasis x environment. Since the predominant component of epistasis in autogamous species is additive x additive (i type), we suggest postponing the selection for grain yield to later generations of inbreeding in order to exploit the beneficial effects of additive x additive epistasis.info:eu-repo/semantics/openAccessCrop Breeding and Applied BiotechnologyCrop Breeding and Applied Biotechnology v.12 n.4 20122012-12-01info:eu-repo/semantics/articletext/htmlhttp://old.scielo.br/scielo.php?script=sci_arttext&pid=S1984-70332012000400001en10.1590/S1984-70332012000400001 |
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Barona,Marco Antonio Acevedo Colombari Filho,José Manoel Santos,Vanderlei da Silva Geraldi,Isaias Olívio |
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Barona,Marco Antonio Acevedo Colombari Filho,José Manoel Santos,Vanderlei da Silva Geraldi,Isaias Olívio Epistatic effects on grain yield of soybean [Glycine max (L.) Merrill] |
author_facet |
Barona,Marco Antonio Acevedo Colombari Filho,José Manoel Santos,Vanderlei da Silva Geraldi,Isaias Olívio |
author_sort |
Barona,Marco Antonio Acevedo |
title |
Epistatic effects on grain yield of soybean [Glycine max (L.) Merrill] |
title_short |
Epistatic effects on grain yield of soybean [Glycine max (L.) Merrill] |
title_full |
Epistatic effects on grain yield of soybean [Glycine max (L.) Merrill] |
title_fullStr |
Epistatic effects on grain yield of soybean [Glycine max (L.) Merrill] |
title_full_unstemmed |
Epistatic effects on grain yield of soybean [Glycine max (L.) Merrill] |
title_sort |
epistatic effects on grain yield of soybean [glycine max (l.) merrill] |
description |
Studies addressing the estimation of genetic parameters in soybean have not emphasized the epistatic effects. The purpose of this study was to estimate the significance of these effects on soybean grain yield, based on the Modified Triple Test Cross design. Thirty-two inbred lines derived from a cross between two contrasting lines were used, which were crossed with two testers (L1 and L2). The experiments were carried out at two locations, in 10 x 10 triple lattice designs with 9 replications, containing 32 lines (Pi ), 64 crosses (32 Pi x L1 and 32 Pi x L2 ) and controls. The variation between ( ͞L1i + ͞L2i - ͞Pi ) revealed the presence of epistasis, as well as an interaction of epistasis x environment. Since the predominant component of epistasis in autogamous species is additive x additive (i type), we suggest postponing the selection for grain yield to later generations of inbreeding in order to exploit the beneficial effects of additive x additive epistasis. |
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Crop Breeding and Applied Biotechnology |
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2012 |
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http://old.scielo.br/scielo.php?script=sci_arttext&pid=S1984-70332012000400001 |
work_keys_str_mv |
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