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Genetics of Adaptive Evolution in ZEA

Genetics of Adaptive Evolution in ZEA
ZEA 适应性进化的遗传学
批准号:
9509074
负责人:
John Doebley
金额:
$14.0万
依托单位国家:
美国
项目类别:
Standard Grant
财政年份:
1995
资助国家:
美国
项目状态:
已结题
起止时间:
1995-10-01 至 1998-09-30

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中文摘要
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英文摘要
9509074 DOEBLEY Closely related species can differ from one another by traits that best adapt each to the specific environment that it inhabits. How such adaptive traits evolved in nature is not well-understood. Many evolutionary geneticists subscribe to the view that the evolution of new adaptations typically involves changes at many genes, each with a small effect on an organism's appearance, or phenotype. Others have argued that one or two genes of large effect are sufficient to establish a new adaptation and that this is the more common mode of adaptive evolution in plants. Empirical studies germane to this debate are relatively few and inconclusive. The proposed research will investigate the genetics of adaptive evolution by analyzing the inheritance of adaptive characters that distinguish natural species of the genus Zea. The traits analyzed will include annual vs. perennial habit, rhizome formation, flowering date, degree of pigmentation in the leaf sheath, seed weight, and flower size and number. The inheritance of these traits will be determined by mapping the individual genes that control these traits to their positions on the chromosomes. By this means, it will be possible to determine the number of genes affecting each trait and the magnitudes of the effects of the individual genes. Overall, this study will provide a detailed picture of the genetic control of adaptively important traits from which one can infer the genetic basis of adaptive evolution in Zea. Because the genus Zea includes cultivated corn and because some of the traits to be studied are of potential agronomic importance, the proposed research can contribute to our understanding and improvement of corn.
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Expanding the maize domestication gene network: from phenotype to gene
  • 批准号:
    1934865
  • 项目类别:
    Standard Grant
  • 资助金额:
    $98.21万
  • 财政年份:
    2020
  • 负责人:
    John Doebley
  • 依托单位:
Functional Analysis of Selected Genes in Maize
  • 批准号:
    1025869
  • 项目类别:
    Standard Grant
  • 资助金额:
    $69.08万
  • 财政年份:
    2011
  • 负责人:
    John Doebley
  • 依托单位:
Molecular and Functional Diversity in the Maize Genome
  • 批准号:
    0321467
  • 项目类别:
    Cooperative Agreement
  • 资助金额:
    $0.0万
  • 财政年份:
    2004
  • 负责人:
    John Doebley
  • 依托单位:
Evolutionary Genomics of Maize
  • 批准号:
    9872631
  • 项目类别:
    Continuing Grant
  • 资助金额:
    $110.52万
  • 财政年份:
    1999
  • 负责人:
    John Doebley
  • 依托单位:
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