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Biblioteca(s):  Embrapa Milho e Sorgo.
Data corrente:  11/09/2002
Data da última atualização:  19/11/2015
Autoria:  MAGALHAES, J. V.
Afiliação:  JURANDIR VIEIRA DE MAGALHAES, CNPMS.
Título:  Molecular genetic and physiological investigations of aluminum tolerance in sorghum (Sorghum bicolor L Moench).
Ano de publicação:  2002
Fonte/Imprenta:  2002.
Páginas:  192 p.
Idioma:  Inglês
Notas:  Tese (Doutorado)- Cornell University, Ithaca.
Conteúdo:  Aluminum (Al) toxicity is one of the major constraints for agriculture on acid soils, which occupy large regions of the word´s agricultural area. At the low pH values associated with these soils (pH 4 -5). Al+3 is solubilized into the soil solution and is toxic to plants, dramatically inhibiting root growth and crop yield. Plant breeding approaches have been used to develop Al tolerant crop genotypes for over 50 years. In order to further improve crop Al tolerance, researchers are now investigating the molecular and physiological mechanisms underlying crop Al tolerance, with the ultimate goal of isolating major Al tolerance genes. Sorghum is an important cereal crop species that exhibits extraordinary levels of tolerance to abiotic stresses such as Al toxicity and drought. Yet, almost nothing is known about the genetics and physiology of sorghum Al tolerance, hence this was the focus of the thesis research described here. A detailed molecular genetic characterization of the mechanisms of Al tolerance in sorghum was conducted in two sources of sorghum Al tolerance, SC283 and SC566. SC283 was found to harbor a single major Al tolerance gene (Alt sb), which exhibited partial dominance in this study. Alt sb was subsequently mapped to a chromosomal location that was apparently not conserved in relation to the location of known Al tolerance genes in wheat and barley. Additional studies indicated that Al tolerance in SC566 is also controlled by the Alt sb gene. The results are disc... Mostrar Tudo
Thesagro:  Genética Molecular.
Categoria do assunto:  --
Marc:  Mostrar Marc Completo
Registro original:  Embrapa Milho e Sorgo (CNPMS)
Biblioteca ID Origem Tipo/Formato Classificação Cutter Registro Volume Status
CNPMS14233 - 1UPCTS - PPT.08/02T.08/02
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