Data/hora: 01/06/2024 01:21:36

Biblioteca(s): | Embrapa Mandioca e Fruticultura.
Data corrente: | 13/08/1999
Data da última atualização: | 13/08/1999
Autoria: | BASNAYAKE, J. COOPER, M.; LUDLOW, M. M.; HENZELL, R. G.; SNELL, P. J.
Afiliação: | Department of Agriculture, The University of Queensland, Brisbane, Queensland 4072, Australia.
Título: | Inheritance of osmotic adjustment to water stress in three grain sorghum crosses
Ano de publicação: | 1995
Fonte/Imprenta: | Theor Appl Genet, v.90, p.675-682, 1995
Idioma: | Inglês
Conteúdo: | Water stress is one of the major constraints to the grain yield of sorghum in tropical and sub-tropical areas of the world. Osmotic adjustment has been widely proposed as a plant attribute that confers adaptation to water stress. The inheritance of osmotic adjustment to water stress was investigated in a series of generations derived from the three possible bi-parental crosses between two inbred sorghum lines with a high capacity for osmotic adjustment (Tx2813 and TAM422; high-OA lines) and one with a low capacity (QL27; low-OA line). Broad-sense heritability on a single-plant basis was generally found to be high. Analysis of segregation ratios by the mixture method of clustering identified two independent major genes for high osmotic adjustment. The line Tx2813 possessed a recessive gene which is given the symbol oal; the line TAM422 possessed an additive gene which is given the symbol OA2.
Palavras-Chave: | Inheritance; Mixture method of clustering; Osmotic adjustment; Sorghum.
Thesaurus Nal: | major genes; water stress.
Categoria do assunto: | --
Registro original: | Embrapa Mandioca e Fruticultura (CNPMF)
Exemplares: | CNPMF - (17281-1) - ADD - SP - -- - S11454 -  - S11454 - DIS