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Interpretation and Use of Estimates of Heritability and Genetic Variances in Plant Breeding1
Estimates of genetic variance and heritability provide useful guidelines for answering many questions which arise in a plant breeding program. In this paper we have attempted to (a) delineateExpand
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The Relationship of Heterosis and Genetic Divergence in Maize.
HETEROSIS in maize appears to increase with increased genetic divergence of the parent populations over a rather wide range of diversity (MOLL, SAL- HUANA and ROBINSON 1962). It does notExpand
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Heterosis and Genetic Diversity in Variety Crosses of Maize 1
Our limited understanding of the cause of heterosis does not provide a basis for deducing the relative amount of heterosis expected in crosses of parents with varying degrees of genetic diversity.Expand
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Sixteen Cycles of Recurrent Full-Sib Family Selection for Grain Weight in Two Maize Populations
Full-sib family selection for greater grain weight per plant is expected to increase the frequency of favorable alleles for this trait in random-mating populations of maize (Zea mays L.). This studyExpand
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Estimates of Genetic Variances and Level of Dominance in Maize.
HE dominant favorable gene hypothesis, first proposed by BRUCE (1910), T attributes heterosis to accumulated effects of loci at which the more favorable allele contributed by one parent is manifestExpand
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Root Distribution of Corn: The Effect of Nitrogen Fertilization
Root growth and development can affect N uptake. In turn, N additions may affect corn (Zea mays L.) root growth. Prolific (multiple ear) hybrids may need a more active root system to satisfy earExpand
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Allozyme Frequency Changes Associated with Selection for Increased Grain Yield in Maize (ZEA MAYS L.).
Frequency changes of alleles at eight enzyme loci were monitored in four long-term maize selection experiments. The results indicate that changes in frequencies of the alleles at these loci areExpand
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