Genetics of naked grain oats in crosses with Brazilian genotypes
Six crosses between three naked oat (Avena sativa L.) germplasm sources from the USA and Australia and three Brazilian hulled genotypes were studied for the segregation of naked grain and multiflorous spikelet traits in the F2 and F3 generations. One major gene with incomplete dominance and expressi...
| Main Authors: | , , , , , , |
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| Format: | Article |
| Language: | English |
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Sociedade Brasileira de Genética
2000-12-01
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| Series: | Genetics and Molecular Biology |
| Online Access: | http://www.scielo.br/scielo.php?script=sci_arttext&pid=S1415-47572000000400025 |
| _version_ | 1811228090981941248 |
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| author | Cândida Braga Cabral Sandra Cristina Kothe Milach Luiz Carlos Federizzi Cristhiane Abegg Bothona Ivone Taderka Luis Marcelo Tisian Emerson Limberger |
| author_facet | Cândida Braga Cabral Sandra Cristina Kothe Milach Luiz Carlos Federizzi Cristhiane Abegg Bothona Ivone Taderka Luis Marcelo Tisian Emerson Limberger |
| author_sort | Cândida Braga Cabral |
| collection | DOAJ |
| description | Six crosses between three naked oat (Avena sativa L.) germplasm sources from the USA and Australia and three Brazilian hulled genotypes were studied for the segregation of naked grain and multiflorous spikelet traits in the F2 and F3 generations. One major gene with incomplete dominance and expressivity for both traits was identified in all populations. The occurrence of intermediate types for naked grain varied with the population and did not depend on the germplasm source of naked grain used. The frequency of intermediate types varied among F2 populations indicating that selection for higher expressivity of naked grain could be used to develop Brazilian oat lines with naked grain.<br>A herança dos caracteres grão sem casca aderida à cariopse e espiguetas multifloras foi estudada através da análise das gerações F2 e F3 de seis cruzamentos entre três fontes de germoplasma nuda dos EUA e Austrália e três genótipos brasileiros com grão com casca. Um gene com dominância e expressividade incompletas foi identificado em todas as populações para ambos os caracteres. A freqüência de plantas F2 com expressão intermediária para o caráter grãos nudos variou de uma população para outra e não dependeu apenas da fonte de nuda utilizada. Seleção para maior expressividade do caráter grãos nudos deve ser feita para o desenvolvimento de linhagens brasileiras com grão não aderido à cariopse. |
| first_indexed | 2024-04-12T09:52:39Z |
| format | Article |
| id | doaj.art-fc8bd9fd19784d8fbc10bb9de70c525b |
| institution | Directory Open Access Journal |
| issn | 1415-4757 1678-4685 |
| language | English |
| last_indexed | 2024-04-12T09:52:39Z |
| publishDate | 2000-12-01 |
| publisher | Sociedade Brasileira de Genética |
| record_format | Article |
| series | Genetics and Molecular Biology |
| spelling | doaj.art-fc8bd9fd19784d8fbc10bb9de70c525b2022-12-22T03:37:48ZengSociedade Brasileira de GenéticaGenetics and Molecular Biology1415-47571678-46852000-12-0123485185410.1590/S1415-47572000000400025Genetics of naked grain oats in crosses with Brazilian genotypesCândida Braga CabralSandra Cristina Kothe MilachLuiz Carlos FederizziCristhiane Abegg BothonaIvone TaderkaLuis Marcelo TisianEmerson LimbergerSix crosses between three naked oat (Avena sativa L.) germplasm sources from the USA and Australia and three Brazilian hulled genotypes were studied for the segregation of naked grain and multiflorous spikelet traits in the F2 and F3 generations. One major gene with incomplete dominance and expressivity for both traits was identified in all populations. The occurrence of intermediate types for naked grain varied with the population and did not depend on the germplasm source of naked grain used. The frequency of intermediate types varied among F2 populations indicating that selection for higher expressivity of naked grain could be used to develop Brazilian oat lines with naked grain.<br>A herança dos caracteres grão sem casca aderida à cariopse e espiguetas multifloras foi estudada através da análise das gerações F2 e F3 de seis cruzamentos entre três fontes de germoplasma nuda dos EUA e Austrália e três genótipos brasileiros com grão com casca. Um gene com dominância e expressividade incompletas foi identificado em todas as populações para ambos os caracteres. A freqüência de plantas F2 com expressão intermediária para o caráter grãos nudos variou de uma população para outra e não dependeu apenas da fonte de nuda utilizada. Seleção para maior expressividade do caráter grãos nudos deve ser feita para o desenvolvimento de linhagens brasileiras com grão não aderido à cariopse.http://www.scielo.br/scielo.php?script=sci_arttext&pid=S1415-47572000000400025 |
| spellingShingle | Cândida Braga Cabral Sandra Cristina Kothe Milach Luiz Carlos Federizzi Cristhiane Abegg Bothona Ivone Taderka Luis Marcelo Tisian Emerson Limberger Genetics of naked grain oats in crosses with Brazilian genotypes Genetics and Molecular Biology |
| title | Genetics of naked grain oats in crosses with Brazilian genotypes |
| title_full | Genetics of naked grain oats in crosses with Brazilian genotypes |
| title_fullStr | Genetics of naked grain oats in crosses with Brazilian genotypes |
| title_full_unstemmed | Genetics of naked grain oats in crosses with Brazilian genotypes |
| title_short | Genetics of naked grain oats in crosses with Brazilian genotypes |
| title_sort | genetics of naked grain oats in crosses with brazilian genotypes |
| url | http://www.scielo.br/scielo.php?script=sci_arttext&pid=S1415-47572000000400025 |
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