Diallel cross analysis for young plants of brachytic maize (Zea mays L.) varieties
Autor(a) principal: | |
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Data de Publicação: | 1997 |
Outros Autores: | , |
Tipo de documento: | Artigo |
Idioma: | eng |
Título da fonte: | Brazilian Journal of Genetics |
Texto Completo: | http://old.scielo.br/scielo.php?script=sci_arttext&pid=S0100-84551997000300016 |
Resumo: | Six brachytic maize varieties were crossed in a diallel mating scheme. Both varieties and crosses were grown hydroponically in a greenhouse, in randomized complete blocks with three replications in two seasons. Four brachytic double cross hybrids were used as checks. Twenty-eight days after planting, data for eight traits were taken for weights of the total plant (TPW), top plant (TOW), total roots (TRW), seminal roots (SRW), and nodal roots (NRW) and number of total roots (TRN), seminal roots (SRN), and nodal roots (NRN). Ten plants were measured in each plot and all the analyses were accomplished with plot means. In the diallel cross the top plant contributed 57.6% of the total plant weight, for seminal roots 15.4%, and for nodal roots 27.0%. Root number distribution was 36.7% seminal roots and 63.3% nodal roots. Approximately the same ratios were observed in the checks. The average heterosis effects were nonsignificant for all traits; the other components of heterosis (variety and specific heterosis) also were not important sources of variation in young plants. The overall results suggest that nonadditive gene action is not an important source of variation for the plant and root system of young plants. The positive correlation coefficients for combinations of traits indicated that they are under the control of a polygenic system |
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Brazilian Journal of Genetics |
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Diallel cross analysis for young plants of brachytic maize (Zea mays L.) varietiesSix brachytic maize varieties were crossed in a diallel mating scheme. Both varieties and crosses were grown hydroponically in a greenhouse, in randomized complete blocks with three replications in two seasons. Four brachytic double cross hybrids were used as checks. Twenty-eight days after planting, data for eight traits were taken for weights of the total plant (TPW), top plant (TOW), total roots (TRW), seminal roots (SRW), and nodal roots (NRW) and number of total roots (TRN), seminal roots (SRN), and nodal roots (NRN). Ten plants were measured in each plot and all the analyses were accomplished with plot means. In the diallel cross the top plant contributed 57.6% of the total plant weight, for seminal roots 15.4%, and for nodal roots 27.0%. Root number distribution was 36.7% seminal roots and 63.3% nodal roots. Approximately the same ratios were observed in the checks. The average heterosis effects were nonsignificant for all traits; the other components of heterosis (variety and specific heterosis) also were not important sources of variation in young plants. The overall results suggest that nonadditive gene action is not an important source of variation for the plant and root system of young plants. The positive correlation coefficients for combinations of traits indicated that they are under the control of a polygenic systemSociedade Brasileira de Genética1997-09-01info:eu-repo/semantics/articleinfo:eu-repo/semantics/publishedVersiontext/htmlhttp://old.scielo.br/scielo.php?script=sci_arttext&pid=S0100-84551997000300016Brazilian Journal of Genetics v.20 n.3 1997reponame:Brazilian Journal of Geneticsinstname:Sociedade Brasileira de Genética (SBG)instacron:SBG10.1590/S0100-84551997000300016info:eu-repo/semantics/openAccessDantas,Ana C. VelloMiranda Filho,José B.Alleoni,Maria R.B.eng1998-10-06T00:00:00Zoai:scielo:S0100-84551997000300016Revistahttps://www.gmb.org.br/brazilian-journal-of-geneticsONGhttps://old.scielo.br/oai/scielo-oai.phpsede@sgb.org.br || sede@sgb.org.br0100-84550100-8455opendoar:1998-10-06T00:00Brazilian Journal of Genetics - Sociedade Brasileira de Genética (SBG)false |
dc.title.none.fl_str_mv |
Diallel cross analysis for young plants of brachytic maize (Zea mays L.) varieties |
title |
Diallel cross analysis for young plants of brachytic maize (Zea mays L.) varieties |
spellingShingle |
Diallel cross analysis for young plants of brachytic maize (Zea mays L.) varieties Dantas,Ana C. Vello |
title_short |
Diallel cross analysis for young plants of brachytic maize (Zea mays L.) varieties |
title_full |
Diallel cross analysis for young plants of brachytic maize (Zea mays L.) varieties |
title_fullStr |
Diallel cross analysis for young plants of brachytic maize (Zea mays L.) varieties |
title_full_unstemmed |
Diallel cross analysis for young plants of brachytic maize (Zea mays L.) varieties |
title_sort |
Diallel cross analysis for young plants of brachytic maize (Zea mays L.) varieties |
author |
Dantas,Ana C. Vello |
author_facet |
Dantas,Ana C. Vello Miranda Filho,José B. Alleoni,Maria R.B. |
author_role |
author |
author2 |
Miranda Filho,José B. Alleoni,Maria R.B. |
author2_role |
author author |
dc.contributor.author.fl_str_mv |
Dantas,Ana C. Vello Miranda Filho,José B. Alleoni,Maria R.B. |
description |
Six brachytic maize varieties were crossed in a diallel mating scheme. Both varieties and crosses were grown hydroponically in a greenhouse, in randomized complete blocks with three replications in two seasons. Four brachytic double cross hybrids were used as checks. Twenty-eight days after planting, data for eight traits were taken for weights of the total plant (TPW), top plant (TOW), total roots (TRW), seminal roots (SRW), and nodal roots (NRW) and number of total roots (TRN), seminal roots (SRN), and nodal roots (NRN). Ten plants were measured in each plot and all the analyses were accomplished with plot means. In the diallel cross the top plant contributed 57.6% of the total plant weight, for seminal roots 15.4%, and for nodal roots 27.0%. Root number distribution was 36.7% seminal roots and 63.3% nodal roots. Approximately the same ratios were observed in the checks. The average heterosis effects were nonsignificant for all traits; the other components of heterosis (variety and specific heterosis) also were not important sources of variation in young plants. The overall results suggest that nonadditive gene action is not an important source of variation for the plant and root system of young plants. The positive correlation coefficients for combinations of traits indicated that they are under the control of a polygenic system |
publishDate |
1997 |
dc.date.none.fl_str_mv |
1997-09-01 |
dc.type.driver.fl_str_mv |
info:eu-repo/semantics/article |
dc.type.status.fl_str_mv |
info:eu-repo/semantics/publishedVersion |
format |
article |
status_str |
publishedVersion |
dc.identifier.uri.fl_str_mv |
http://old.scielo.br/scielo.php?script=sci_arttext&pid=S0100-84551997000300016 |
url |
http://old.scielo.br/scielo.php?script=sci_arttext&pid=S0100-84551997000300016 |
dc.language.iso.fl_str_mv |
eng |
language |
eng |
dc.relation.none.fl_str_mv |
10.1590/S0100-84551997000300016 |
dc.rights.driver.fl_str_mv |
info:eu-repo/semantics/openAccess |
eu_rights_str_mv |
openAccess |
dc.format.none.fl_str_mv |
text/html |
dc.publisher.none.fl_str_mv |
Sociedade Brasileira de Genética |
publisher.none.fl_str_mv |
Sociedade Brasileira de Genética |
dc.source.none.fl_str_mv |
Brazilian Journal of Genetics v.20 n.3 1997 reponame:Brazilian Journal of Genetics instname:Sociedade Brasileira de Genética (SBG) instacron:SBG |
instname_str |
Sociedade Brasileira de Genética (SBG) |
instacron_str |
SBG |
institution |
SBG |
reponame_str |
Brazilian Journal of Genetics |
collection |
Brazilian Journal of Genetics |
repository.name.fl_str_mv |
Brazilian Journal of Genetics - Sociedade Brasileira de Genética (SBG) |
repository.mail.fl_str_mv |
sede@sgb.org.br || sede@sgb.org.br |
_version_ |
1754734879229083648 |