Genetic analysis of aluminum tolerance in Brazilian barleys
Aluminum (Al) toxicity is a major factor limiting barley growth in acid soils, and genotypes with adequate level of tolerance are needed for improving barley adaptation in Brazil. To study the inheritance of Al tolerance in Brazilian barleys, cultivars Antarctica 1, BR 1 and FM 404 were crossed to s...
Main Authors: | , |
---|---|
Format: | Article in Journal/Newspaper |
Language: | English Spanish Portuguese |
Published: |
Embrapa Informação Tecnológica
2002
|
Subjects: | |
Online Access: | https://doaj.org/article/036dd51ec66944c282c1fcded549cfcb |
id |
ftdoajarticles:oai:doaj.org/article:036dd51ec66944c282c1fcded549cfcb |
---|---|
record_format |
openpolar |
spelling |
ftdoajarticles:oai:doaj.org/article:036dd51ec66944c282c1fcded549cfcb 2023-05-15T14:00:23+02:00 Genetic analysis of aluminum tolerance in Brazilian barleys Minella Euclydes Sorrells Mark Earl 2002-01-01T00:00:00Z https://doaj.org/article/036dd51ec66944c282c1fcded549cfcb EN ES PT eng spa por Embrapa Informação Tecnológica http://www.scielo.br/scielo.php?script=sci_arttext&pid=S0100-204X2002000800007 https://doaj.org/toc/0100-204X https://doaj.org/toc/1678-3921 0100-204X 1678-3921 https://doaj.org/article/036dd51ec66944c282c1fcded549cfcb Pesquisa Agropecuária Brasileira, Vol 37, Iss 8, Pp 1099-1103 (2002) Hordeum vulgare genotypes genetic inheritance toxicity Agriculture (General) S1-972 article 2002 ftdoajarticles 2022-12-31T14:53:48Z Aluminum (Al) toxicity is a major factor limiting barley growth in acid soils, and genotypes with adequate level of tolerance are needed for improving barley adaptation in Brazil. To study the inheritance of Al tolerance in Brazilian barleys, cultivars Antarctica 1, BR 1 and FM 404 were crossed to sensitive Kearney and PFC 8026, and intercrossed. Parental, F1, F2 and F6 generations were grown in nutrient solution containing 0.03, 0.05 and 0.07 mM of Al and classified for tolerance by the root tip hematoxylin staining assay. Tolerant by sensitive F2 progenies segregated three tolerant to one sensitive, fitting the 3:1 ratio expected for a single gene. The F6 populations segregated one tolerant to one sensitive also fitting a monogenic ratio. The F2 seedlings from crosses among tolerant genotypes scored the same as the parents. Since the population size used would allow detection of recombination as low as 7%, the complete absence of Al sensitive recombinants suggests that tolerance in these cultivars is most probably, controlled by the same gene. Thus, the potential for improving Al tolerance through recombination of these genotypes is very low and different gene sources should be evaluated. Article in Journal/Newspaper Antarc* Antarctica Directory of Open Access Journals: DOAJ Articles |
institution |
Open Polar |
collection |
Directory of Open Access Journals: DOAJ Articles |
op_collection_id |
ftdoajarticles |
language |
English Spanish Portuguese |
topic |
Hordeum vulgare genotypes genetic inheritance toxicity Agriculture (General) S1-972 |
spellingShingle |
Hordeum vulgare genotypes genetic inheritance toxicity Agriculture (General) S1-972 Minella Euclydes Sorrells Mark Earl Genetic analysis of aluminum tolerance in Brazilian barleys |
topic_facet |
Hordeum vulgare genotypes genetic inheritance toxicity Agriculture (General) S1-972 |
description |
Aluminum (Al) toxicity is a major factor limiting barley growth in acid soils, and genotypes with adequate level of tolerance are needed for improving barley adaptation in Brazil. To study the inheritance of Al tolerance in Brazilian barleys, cultivars Antarctica 1, BR 1 and FM 404 were crossed to sensitive Kearney and PFC 8026, and intercrossed. Parental, F1, F2 and F6 generations were grown in nutrient solution containing 0.03, 0.05 and 0.07 mM of Al and classified for tolerance by the root tip hematoxylin staining assay. Tolerant by sensitive F2 progenies segregated three tolerant to one sensitive, fitting the 3:1 ratio expected for a single gene. The F6 populations segregated one tolerant to one sensitive also fitting a monogenic ratio. The F2 seedlings from crosses among tolerant genotypes scored the same as the parents. Since the population size used would allow detection of recombination as low as 7%, the complete absence of Al sensitive recombinants suggests that tolerance in these cultivars is most probably, controlled by the same gene. Thus, the potential for improving Al tolerance through recombination of these genotypes is very low and different gene sources should be evaluated. |
format |
Article in Journal/Newspaper |
author |
Minella Euclydes Sorrells Mark Earl |
author_facet |
Minella Euclydes Sorrells Mark Earl |
author_sort |
Minella Euclydes |
title |
Genetic analysis of aluminum tolerance in Brazilian barleys |
title_short |
Genetic analysis of aluminum tolerance in Brazilian barleys |
title_full |
Genetic analysis of aluminum tolerance in Brazilian barleys |
title_fullStr |
Genetic analysis of aluminum tolerance in Brazilian barleys |
title_full_unstemmed |
Genetic analysis of aluminum tolerance in Brazilian barleys |
title_sort |
genetic analysis of aluminum tolerance in brazilian barleys |
publisher |
Embrapa Informação Tecnológica |
publishDate |
2002 |
url |
https://doaj.org/article/036dd51ec66944c282c1fcded549cfcb |
genre |
Antarc* Antarctica |
genre_facet |
Antarc* Antarctica |
op_source |
Pesquisa Agropecuária Brasileira, Vol 37, Iss 8, Pp 1099-1103 (2002) |
op_relation |
http://www.scielo.br/scielo.php?script=sci_arttext&pid=S0100-204X2002000800007 https://doaj.org/toc/0100-204X https://doaj.org/toc/1678-3921 0100-204X 1678-3921 https://doaj.org/article/036dd51ec66944c282c1fcded549cfcb |
_version_ |
1766269465264128000 |