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  • 1995-1999  (2)
  • Alpha-amylase  (1)
  • Cytoplasmic effects  (1)
  • 1
    Electronic Resource
    Electronic Resource
    Analysis of genetic effects on nutrient quality traits in indica rice (1996)
    Springer
    Theoretical and applied genetics 92 (1996), S. 1099-1102 
    Details
    ISSN: 1432-2242
    Keywords: Cytoplasmic effects ; Seed and maternal effects ; Rice nutrient quality ; Heritability ; Indica rice
    Source: Springer Online Journal Archives 1860-2000
    Topics: Biology
    Notes: Abstract Nine cytoplasmic male-sterile lines and five restorer lines were used in an incomplete diallel cross to analyze seed effects, cytoplasmic effects, and maternal gene effects on nutrient quality traits of indica rice (Oryza sauva L.). The results indicated that nutrient quality traits were controlled by cytoplasmic and maternal effects as well as by seed direct effects. Maternal effects for lysine content (LC), lysine index (LI), and the ratio of lysine content to protein content (RLP) were more important than seed direct effects, while protein content (PC) and protein index (PI) were mainly affected by seed direct effects. Cytoplasmic effects accounted for 2.41–20.80% of the total genetic variation and were significant for all nutrient quality traits. Additive genetic effects were much more important than dominance effects for all of the traits studied, so that selection could be applied for these traits in early generations.
    Type of Medium: Electronic Resource
    URL: http://dx.doi.org/10.1007/BF00224055
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  • 2
    Electronic Resource
    Electronic Resource
    Genetic investigation of contributions of embryo and endosperm genes to malt Kolbach index, alpha-amylase activity and wort nitrogen content in barley (1998)
    Springer
    Theoretical and applied genetics 96 (1998), S. 709-715 
    Details
    ISSN: 1432-2242
    Keywords: Key words Two-rowed barley ; Embryo and endosperm effects ; Kolbach index ; Alpha-amylase ; Wort-N ; GE interaction
    Source: Springer Online Journal Archives 1860-2000
    Topics: Biology
    Notes: Abstract  A genetic model is proposed for the analysis of embryo and endosperm effects as well as GE interaction effects. An investigation of three malting quality traits in grains of seven parents and their F2s was undertaken in a half-diallel cross of barley (Hordeum distichum L.) over 2 years. The results indicated that the malt Kolbach index (KI), alpha-amylase activity (αAA) and wort soluble nitrogen (Wort-N) are controlled by both embryo genetic effects and endosperm genetic effects. Variance of the endosperm additive effects was obviously larger than that of the embryo additive effects. In the contribution of the embryo genetic effects to variation in malt αAA and Wort-N, the dominance effects were considerably larger than the additive effects. The endosperm dominance effects constituted a major part of the total genetic effect on the KI. Significant endosperm GE interactions were also detected in the malt traits concerned. Endosperm general heritability (h 2 e ) tended to be larger than interaction heritability (h 2 oE or h 2 eE ) for all the traits. Endosperm heterosis was observed to be significantly positive for αAA but negative for Wort-N in the F2 seed generation. Prediction of main gene effects for seven parents showed that ‘Ganmu 2’ and ‘Supi1’ were suitable parental varieties for malt αAA and Wort-N improvement. Our genetic model for malting quality traits and its application in breeding are discussed.
    Type of Medium: Electronic Resource
    URL: http://dx.doi.org/10.1007/s001220050792
    Library Location Call Number Volume/Issue/Year Availability
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    Paper (German National Licenses)
    Fulltext
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