Genetic analysis of variation for grain yield and protein concentration in two wheat crosses

Fabrizius, MA, Cooper, M and Basford, KE (1997) Genetic analysis of variation for grain yield and protein concentration in two wheat crosses. Australian Journal of Agricultural Research, 48 5: 605-614. doi:10.1071/A96152


Author Fabrizius, MA
Cooper, M
Basford, KE
Title Genetic analysis of variation for grain yield and protein concentration in two wheat crosses
Journal name Australian Journal of Agricultural Research   Check publisher's open access policy
ISSN 0004-9409
Publication date 1997-01-01
Year available 1997
Sub-type Article (original research)
DOI 10.1071/A96152
Open Access Status Not yet assessed
Volume 48
Issue 5
Start page 605
End page 614
Total pages 10
Place of publication COLLINGWOOD
Publisher C S I R O PUBLICATIONS
Language eng
Abstract Grain yield and protein concentration are two of the more important criteria for wheat breeding in Queensland. Three aspects of the inheritance of both of these traits can have an impact on achieving genetic progress: (i) the magnitude and form of the genetic correlation between the traits, (ii) the magnitude of genetic variation and genotype x environment interactions, and (iii) the importance of epistasis in genetic variation. These 3 factors were examined for 2 crosses in a multi-environment trial conducted in Queensland in 1989. Negative genetic correlations were found between. grain yield and protein concentration in both crosses. Genetic variation and genotype x environment interactions were found to be important for both traits. There was little evidence for the existence of significant additive x additive epistasis for either trait and the genotype x environment interactions were predominantly additive x environment in nature. From both crosses, progeny combining the high yield and high protein levels of the parents were identified. This suggests that there was a degree of independent segregation of the genes controlling grain yield and protein concentration in both crosses. Therefore, simultaneous genetic progress for yield and protein concentration is possible in Queensland environments.
Keyword epistasis
genotypexenvironment interaction
By-Environment Interaction
Winter-Wheat
3-Way Data
Selection
Genotypes
Strategy
Lines
Q-Index Code C1
Q-Index Status Provisional Code
Institutional Status Unknown

Document type: Journal Article
Sub-type: Article (original research)
Collection: ResearcherID Downloads - Archived
 
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